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Question Number 1

The following program is used to merge the contents of two files. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != 0)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

while ((ch = fgetc(fs1)) != 0)

fputc(ch, ft);

while ((ch = fgetc(fs2)) != EOF)

No change needed, program will give the correct output.

Question Number 2

The following program is used to sort an array of values using Bubble sort technique. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

void bubble_sort(int arry[], int n);
int main()
{
    int array[100], n, c;

    printf("Enter number of elements\n");
    scanf("%d", &n);

    printf("Enter %d integers\n", n);

    for (c = 0; c <  n; c++)
        scanf("%d", &array[c]);

    bubble_sort(array, n);

    printf("Sorted array in ascending order:\n");

    for (c = 0; c <  n; c++)
        printf("%d\n", array[c]);

    return 0;
}

void bubble_sort(int arry[], int n)
{
    int c, d, temp;

    for (c = 0; c <  (n - 1); c++)
    {
        for (d = 0; d <  n - c - 1; d++)
        {
            if (arry[d] > arry[d + 1])
            {

                temp = arry[d];
                arry[d] = arry[d + 1];
                arry[d + 1] = arry[d - 1];
            }
        }
    }
}

temp = arry[d + 1];

arry[d] = arry[d + 1];

arry[d + 1] = arry[d - 1];

No change needed, program will give the correct output.

Question Number 3

The following program is used to copy strings without using string function. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(str,dest);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
        count++;
    }
    d[count] = '\0';
}

d[count] = s[count];

copy_str(str,dest);

d[count] = '\0';

No change needed, program will give the correct output.

Question Number 4

For a given C program, where is the execution started?

Header files

main function

Function

None of the above

Question Number 5

Give the output of the following code snippet :

extern void func();
extern int a;
int a=20;
void main()
{
    func();
}
void func()
{
    printf("%d",a);
}

No output

Compilation error

Question Number 6

The following program is used to copy a file. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

while ((ch = fgetc(target)) != EOF) fputc(ch, target);

if((ch = fgetc(source)) != EOF) fputc(ch, target);

while ((ch = fgetc(source)) != EOF) fputc(ch, target);

No change needed, program will give the correct output.

Question Number 7

The following program is used to merge the contents of two files. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;

    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

while ((ch = fgetc(fs1)) != EOF)

FILE *fs1, *fs2, *ft;

fputc(ch, ft);

No change needed, program will give the correct output.

Question Number 8

The following program is used to swap two values. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include < stdio.h>
int main()
{
    int value1, value2, temp;

    printf("\nEnter the value of value1 : ");
    scanf("%d", &value1);
    printf("\nEnter the value of value2 : ");
    scanf("%d", &value2);

    printf("Before Swapping\nvalue1 = %d\nvalue2 = %d\n", value1, value2);

    value2 = temp;
    temp = value1;
    value1 = value2;

    printf("After Swapping\nvalue1 = %d\nvalue2 = %d\n", value1, value2);

    return 0;
}

value2 = temp;

scanf("%d", &value2);

value1 = value2;

No change needed, program will give the correct output.

Question Number 9

What is the return type of the minprintf() function :

int

char

void

float

Question Number 10

The following program is used to merge two arrays into a single array. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

for (i = 0; i < num1 + num2;)

if (j < num1 && k < num2)

else if (j == num1)

No change needed, program will give the correct output.

Question Number 11

Give the output of the following code snippet :

void main()
{
    long int x=258L;
    int y=10;
    long int z;
    z=x % y;

    printf("%d",z);
}

Compilation error

Question Number 12

Give the output of the following code snippet :

int x;
float y;
void main()
{

    printf("%d %.2f",x,y);
}

0 0.00

Garbage values

No output

Compilation error

Question Number 13

The following program is used to display the student details using structures. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10];
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d",&num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        stud[i].studId = i + 1;
        printf("\nStudent ID %d\n", stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }
    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n", i + 1);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

struct student

scanf("%s", stud[i].name);

printf("Name: %s", stud[i].name);

No change needed, program will give the correct output.

Question Number 14

Give the output of the following code snippet :

void main()
{

    printf("%d",printf("Hello World "));

}

Hello World

Hello World 10

Hello World 12

Compilation error

Question Number 15

The following program is used to generate the fibonacci series. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?



#include < stdio.h>

int main()
{
    int count, n, num1 = 0, num2 = 1, result = 0;
    printf("Enter number of terms: ");
    scanf("%d", &n);
    printf("Fibonacci Series:\n %d  %d  ", num1, num2);
    count = 2;
    while (count< n)
    {
        result = num1 + num2;
        num1 = num2;
        num2 = result;
        printf("%d ", result);
    }
    ++count;
    return 0;
}

result = num1 + num2;

num1 = num2; num2 = result;

++count;

No change needed, program will give the correct output.

Question Number 16

Give the output of the following code snippet :


#define max 10

int main()
{

    int i;

    i=max;

    printf("%d",i);

    return 0;
}

No output

Compilation error.

Question Number 17

Input switching is invisible if input comes from another program using pipe mechanism in C.State true or false.

Always true.

Always false.

Sometimes true and sometimes false.

Not enough information to provide the right answer .

Question Number 18

The following program is used to find the factorial of a number. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>

int main()
{
    int n, count;
    int fact = 1;
    printf("Enter a value: ");
    scanf("%d", &n);
    if (n> 0)
        printf("Factorial of negative number does not exist");
    else
    {
        for (count = 1; count < = n; ++count)
        {
            fact = fact * count;
        }
        printf("Factorial of %d is %d ",n,fact);
    }
    return 0;
}

if (n> 0)

fact = fact * count;

int fact = 1;

No change needed, program will give the correct output.

Question Number 19

Give the output of the following code snippet :

extern void func();
extern int a;
int a=20;
void main()
{
    func();
    printf("%d",a);
}
void func()
{
    a=200;
    printf("%d ",a);
}

200 200

20 200

20 20

Compilation error

Question Number 20

The following program is used to concatenate two strings without using string function. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

void str_cat(char[], char[]);

int main()
{
    char str1[100], str2[100];

    printf("Input a string : \n");
    scanf("%s", str1);

    printf("Input string to concatenate : \n");
    scanf("%s", str2);

    str_cat(str1, str2);

    printf("String obtained on concatenation : %s \n", str1);

    return 0;
}

void str_cat(char str1[], char str2[])
{
    int count = 0, d = 0;

    while (str1[count] != '\0')
    {
        count++;
    }
    while (str2[d] != '\0')
    {
        str1[count] = str2[d];
        d++;
        count++;
    }

    str1[count] = '\0';
}

str1[count] = str2[d];

while (str1[count] != '\0')

while (str2[d] != '\0')

No change needed, program will give the correct output.

Question Number 21

The following program is used to check if the given number is odd or even. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>

int main()
{
    int value;
    printf("Enter the value to be checked : ");
    scanf("%d", &value);
    if ((value * 2) == 0)
        printf("%d is even", value);
    else
        printf("%d is odd ", value);
    return 0;
}

printf("Enter the value to be checked : ");

scanf("%d", &value);

if ((value * 2) == 0)

No change needed, program will give the correct output.

Question Number 22

Which of the following are conditional directives in C?

#define

#elif

#pragma

All of the above

Question Number 23

The following program is used to merge two arrays into a single array. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j == num1 && k == num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

for (i = 0; i < num1 + num2;)

if (j == num1 && k == num2)

if (arry1[j] < arry2[k])

No change needed, program will give the correct output.

Question Number 24

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

while ((ch = fgetc(fs2)) != EOF)
fputc(ch, ft);

while ((ch = fgetc(ft)) != EOF)
fputc(ch, ft);

if ((ch = fgetc(fs2)) != EOF)
fputc(ch, ft);

No change needed, program will give the correct output.

Question Number 25

void str_cat(char[], char[]);

int main()
{
    char str1[100], str2[100];

    printf("Input a string : \n");
    scanf("%s", str1);

    printf("Input string to concatenate : \n");
    scanf("%s", str2);

    str_cat(str1, str2);

    printf("String obtained on concatenation : %s \n", str1);

    return 0;
}

void str_cat(char str1[], char str2[])
{
    int count = 0, d = 0;

    while (str2[d] != '\0')
    {
        str1[count] = str2[d];
        d++;
        count++;
    }

    str1[count] = '\0';
}

while (str1[d] != '\0') { count++; }

while (str1[count] != '\0') { count++; }

while (str1[count] != str[d]) { count++; }

No change needed, program will give the correct output.

Question Number 26

The following program is used to delete a file. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>

int main()
{
    int status;
    status = delete("Input.txt");

    if (status == 0)
        printf("File has been deleted successfully\n");
    else
    {
        printf("Unable to delete the file\n");
        perror("Error");
    }
    return 0;
}

perror("Error");

status = delete("Input.txt");

if (status == 0)

No change needed, program will give the correct output.

Question Number 27

Which of the following are not unary operators in C?

sizeof

Question Number 28

The following program is used to find the GCD and LCM of two numbers. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include < stdio.h>

int main()
{
    int a, b, x, y, temp, gcd, lcm;

    printf("Enter two values : \n");
    scanf("%d%d", &x, &y);

    a = x;
    b = y;

    while (b != 0)
    {
        temp = b;
        a = temp;
    }

    b = a % b;
    gcd = a;
    lcm = (x*y) / gcd;

    printf("Greatest common divisor of %d and %d = %d\n", x, y, gcd);
    printf("Least common multiple of %d and %d = %d\n", x, y, lcm);

    return 0;
}

b = a % b;

gcd = a;

lcm = (x*y) / gcd;

No change needed, program will give the correct output.

Question Number 29

The following program is used to compare two strings without using string function. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

int str_compare(char[], char[]);

int main()
{
    int flag;
    char str1[100], str2[100];

    printf("Input first string\n");
    scanf("%s", str1);

    printf("Input second string\n");
    scanf("%s", str2);

    flag = str_compare(str1, str2);

    if (flag == 0)
        printf("Entered strings are equal.\n");
    else
        printf("Entered strings are not equal.\n");

    return 0;

}

int str_compare(char a[], char b[])
{
    int count = 0;

    while (a[count] == b[count])
    {
        break;
        count++;
    }

    if (a[count] == '\0' && b[count] == '\0')
        return 0;
    else
        return -1;
}

if (a[count] == '\0')

if (a[count] == '\0' && b[count] != '\0')

if (a[count] == '\0' || b[count] == '\0')

No change needed, program will give the correct output.

Question Number 30

Give the output of the following code snippet :

#define FUNC(a,b) (a*b+20);
void main()
{
    int a=3,b=10;
    int c=FUNC(a,b);
    printf("%d %d %d",a,b,c);
}

3 10 40

3 10 50

10 3 20

Compilation error

Question Number 31

What is the meant by ‘a’ in the following operation?

fp = fopen(“New.txt”, “a”);

Attach

Append

Apprehend

Add

Question Number 32

Give the output of the following code :

void main()
{
    char c='a';
    printf("Initial value = %c", c);
    scanf("%d",&c);
    printf("New value=%d",c);
}
Assume that the input given  is c='12'. Give the final value of c :

Garbage value

Question Number 33

The following program is used to display the student details using structures. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10];
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d",&num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        stud[i].studId = i + 1;
        printf("\nStudent ID %d\n", stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", stud[i].marks);
        printf("\n");
    }
    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n", i + 1);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

scanf("%s", stud[i].name);

stud[i].studId = i + 1;

scanf("%d", stud[i].marks);

No change needed, program will give the correct output.

Question Number 34

The following program is used to concatenate two strings without using string function. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

void str_cat(char[], char[]);

int main()
{
    char str1[100], str2[100];

    printf("Input a string : \n");
    scanf("%s", str1);

    printf("Input string to concatenate : \n");
    scanf("%s", str2);

    str_cat(str1, str2);

    printf("String obtained on concatenation : %s \n", str1);

    return 0;
}

void str_cat(char str1[], char str2[])
{
    int count = 0, d = 0;

    while (str1[count] != '\0')
    {
        count++;
    }
    while (str2[d] != '\0')
    {
        count++;
    }
    str1[count] = str2[d];
    d++;
    str1[count] = '\0';
}

str1[count] = '\0';

str1[count] = str2[d]; d++;

while (str1[count] != '\0') { count++; }

No change needed, program will give the correct output.

Question Number 35

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

fs1 = fopen("File1.txt"); fs2 = fopen("File2.txt");

fs1 = fopen(fs2, "r"); fs2 = fopen(fs1, "r");

fs1 = fopen("File1.txt", "r"); fs2 = fopen("File2.txt", "r");

No change needed, program will give the correct output.

Question Number 36

Give the output of the following code snippet :

#define fun(x, y) x / y + x
int main()
{

    printf("%d ", fun(-3, 3));
    return 0;
}

-4

Question Number 37

The following program is used to execute a command in the OS. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include< stdio.h>
#include< stdlib.h>

int main()
{
    int files;

    printf("Executing command : 'DIR'\n");
    files = system("dirctry");

    printf("Returned value is: %d.\n", files);
    return 0;
}

files = system("dirctry");

printf("Returned value is: %d.\n", files);

#include< stdlib.h>

No change needed, program will give the correct output.

Question Number 38

The following program is used to find the GCD and LCM of two numbers. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>

int main()
{
    int a, b, x, y, temp, gcd, lcm;

    printf("Enter two values : \n");
    scanf("%d%d", &x, &y);

    a = x;
    b = y;

    while (b != 0)
    {
        temp = b;
        b = a % b;
        a = temp;
    }

    gcd = a % b;
    lcm = (x*y) / gcd;

    printf("Greatest common divisor of %d and %d = %d\n", x, y, gcd);
    printf("Least common multiple of %d and %d = %d\n", x, y, lcm);

    return 0;
}

a = temp;

gcd = a % b;

lcm = (x*y) / gcd;

No change needed, program will give the correct output.

Question Number 39

The following program is used to find length of a string without using string function. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

int string_length(char[]);

int main()
{
    char str[100];
    int length;
    length = string_length(str);
    printf("Input a string\n");
    scanf("%s", str);
    printf("Length of string %s = %d\n", str, length);

    return 0;
}

int string_length(char s[])
{
    int count = 0;

    while (s[count] != '\0')
        count++;

    return count;
}

return count;

length = string_length(str);

int string_length(char[]);

No change needed, program will give the correct output.

Question Number 40

What is the output of the mathematical function sin(x)?

sine of x where x is in radians

sine of x where x is in degree

cosine of x where x is in radians

cosine of x where x is in degree

Question Number 41

Which of the following statements is true about the function rand()?

Sets the seed for srand() function.

Helps to generate square root of a value.

Is defined in the header file stdlib.h

All of the above.

Question Number 42

The following program is used to copy a file. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((target = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

while ((target = fgetc(source)) != EOF)

source = fopen("CopyFile.txt", "r");

fclose(source);

No change needed, program will give the correct output.

Question Number 43

The following program is used to generate the palindrome of a number. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>
int main()
{
    int value,num, reverse = 0;

    printf("Enter a number to reverse : ");
    scanf("%d", &value);

    num = value;

    while (num != 0)
    {
        reverse = reverse * 10;
        reverse = reverse + num;
        num = num / 10;
    }

    if (value == reverse)
        printf(" %d is a Palindrome",value);
    else
        printf(" %d is not a Palindrome", value);

    return 0;
}

num = value;

reverse = reverse * 10;

reverse = reverse + num;

No change needed, program will give the correct output.

Question Number 44

The following program is used to reverse a string. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>
#include < string.h>

int main()
{
    char str[100], reverse[100];
    int strlength, count, d;

    printf("Input a string\n");
    scanf("%s",str);
    strlength = strlen(str);

    for (count = strlength - 1, d = 0; count >= 0; count--, d++)
        reverse[d] = str[strlength];

    reverse[d] = '\0';
    printf("%s\n", reverse);
    return 0;
}

reverse[d] = '\0';

for (count = strlength - 1, d = 0; count >= 0; count--, d++)

reverse[d] = str[strlength];

No change needed, program will give the correct output.

Question Number 45

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == 0)
    {
        perror("Error ");
        break;
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

while ((ch = fgetc(fs1)) != EOF) fputc(ch, ft);

while ((ch = fgetc(fs2)) != EOF) fputc(ch, ft);

if (ft == 0) { perror("Error "); break; }

No change needed, program will give the correct output.

Question Number 46

Give the output of the following code snippet :

#define SWAP(a,b)(a=a+b,b=a-b,a=a-b)
void main()
{
    int a=3,b=10,c=5;
    SWAP(a,b);
    printf("%d %d",a,b);
}

10 3

3 10

No output

Compilation error

Question Number 47

Give the output of the following code snippet :

int main()
{
#if VAR
    printf("%d",VAR);
#else
    printf("Hello World");
#endif
}

Hello world

No output

Compilation error

Question Number 48

Give the output of the following code snippet :

void func(int a)
{
    a=200;
    printf("%d",a);
}
void main()
{
    func(10);
}

200

No output

Compilation error

Question Number 49

Which of the following is an example of an unsigned long hexadecimal constant:

0XF

0XDL

0XFUL

All of the above.

Question Number 50

Which of the following is possible with any 2 operators in C?

Same associativity, different precedence

Same associativity, same precedence

Different associativity, different precedence

All of the above

Question Number 51

The following program is used to add 'n' numbers. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include< stdio.h>

int main()
{
    int num, sum = 0, count, value;

    printf("Enter the number of integers to be added : \n");
    scanf("%d", &num);

    printf("Enter %d integers\n", num);

    for (count = 1; count < = num; count++)
    {
        scanf("%d", &value);
    }
    sum = sum + value;
    printf("Sum of entered integers = %d\n", sum);

    return 0;
}

sum = sum + value;

scanf("%d", &value);

for (count = 1; count < = num; count++)

No change needed, program will give the correct output.

Question Number 52

Give the output of the following code snippet :

void fun();
int main()
{
#define test(x, y) x / y + x
    fun();
}
void fun()
{
    printf("%d\n", test(-3, 3));
}

-8

-4

Compiler error

Question Number 53

The following program is used to compare two strings without using string function. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

int str_compare(char[], char[]);

int main()
{
    int flag;
    char str1[100], str2[100];

    printf("Input first string\n");
    scanf("%s", str1);

    printf("Input second string\n");
    scanf("%s", str2);

    flag = str_compare();

    if (flag == 0)
        printf("Entered strings are equal.\n");
    else
        printf("Entered strings are not equal.\n");

    return 0;

}

int str_compare(char a[], char b[])
{
    int count = 0;

    while (a[count] == b[count])
    {
        if (a[count] == '\0' || b[count] == '\0')
            break;
        count++;
    }

    if (a[count] == '\0' && b[count] == '\0')
        return 0;
    else
        return -1;
}

if (a[count] == '\0' && b[count] == '\0')

flag = str_compare();

int str_compare();

No change needed, program will give the correct output.

Question Number 54

Which of the following are examples of derived data types?

array

int

float

double

Question Number 55

Give the output of the following code snippet :

void main()
{
    int x = 4, y, z;
    y = --x;
    z = x--;
    printf("%d %d %d", x,  y, z);
}

3 2 3

2 3 3

3 2 2

2 3 4

Question Number 56

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

if (arry1[j] == arry2[k])

result[j] = arry1[j];

result[i] = arry2[k];

No change needed, program will give the correct output.

Question Number 57

In printf function in C, which is the format specifier used to print decimal values?

Question Number 58

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

source = fopen(CopyFile.txt, "r");

source = fopen("CopyFile.txt", "r");

source = fopen("CopyFile.txt", "ab");

No change needed, program will give the correct output.

Question Number 59

Give the output of the following code snippet :

#define CUBE(x)((x)*(x)*(x))
void fun()
{
    int x=2,y=1;
    int z=CUBE(++x + --y);
    printf("%d ",y);
}
void main()
{
    int a=3,b=10,c=5;
    int d;
    fun();
    b=CUBE(a+3)/b+c-a;
    printf("%d",b);
}

10 24

-1 18

-2 23

Compilation error

Question Number 60

Which standard header contains a set of definitions that define how to step through an argument list in C?

stdio.h

stdlib.h

math.h

stdarg.h

Question Number 61

Which of the following are valid #define statements in C?

#define CUBE(B) (B*B*B);

#define CUBE(b) (B*B*B)

#define CUBE(B)(B*B*B)

#define CUBE(B) {B*B*B}

Question Number 62

#include < stdio.h>

int main()
{
    int a, b, x, y, temp, gcd, lcm;

    printf("Enter two values : \n");
    scanf("%d%d", &x, &y);

    a = x;
    b = y;

    while (b != 0)
    {
        temp = b / a;
        b = a % b;
        a = temp;
    }

    gcd = a;
    lcm = (x*y) / gcd;

    printf("Greatest common divisor of %d and %d = %d\n", x, y, gcd);
    printf("Least common multiple of %d and %d = %d\n", x, y, lcm);

    return 0;
}

temp = b / a;

b = a % b;

a = temp;

No change needed, program will give the correct output.

Question Number 63

void str_cat(char[], char[]);

int main()
{
    char str1[100], str2[100];

    printf("Input a string : \n");
    scanf("%s", str1);

    printf("Input string to concatenate : \n");
    scanf("%s", str2);

    str_cat();

    printf("String obtained on concatenation : %s \n", str1);

    return 0;
}

void str_cat(char str1[], char str2[])
{
    int count = 0, d = 0;

    while (str1[count] != '\0')
    {
        count++;
    }
    while (str2[d] != '\0')
    {
        str1[count] = str2[d];
        d++;
        count++;
    }

    str1[count] = '\0';
}

str_cat();

void str_cat(char[], char[]);

str1[count] = str2[d];

No change needed, program will give the correct output.

Question Number 64

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

fs1 = fopen(fs2);

fs1 = fopen("File1.txt", "w");

fs1 = fopen("File1.txt", "r");

No change needed, program will give the correct output.

Question Number 65

What is the default return-type of function putchar()?

char

int

char

double

Question Number 66

Which of the following data types fall under the floating types classification in C?

float

char

long int

All of the above

Question Number 67

The following program is used to copy a file. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");
    FILE *source, *target;

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

target = fopen("Destination.txt", "w");

FILE *source, *target;

fputc(ch, target);

No change needed, program will give the correct output.

Question Number 68

The following program is used to add two complex numbers by passing structure to a function. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

struct complex
{
    float real;
    float imag;
};
struct int Add(struct complex n1, struct complex n2);
int main()
{
    struct complex n1, n2, temp;
    printf("For first complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n1.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n1.imag);
    printf("For second complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n2.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n2.imag);
    temp = Add(n1, n2);
    printf("Sum=%.1f+%.1fi", temp.real, temp.imag);
    return 0;
}
struct complex Add(struct complex n1, struct complex n2)
{
    struct complex temp;
    temp.real = n1.real + n2.real;
    temp.imag = n1.imag + n2.imag;
    return(temp);
}

struct complex

temp = Add(n1, n2);

struct int Add(struct complex n1, struct complex n2);

No change needed, program will give the correct output.

Question Number 69

Give the output of the following code snippet :

#define A 1 + 2
#define B 3 + 4
int main()
{
    int var = A * B;
    printf("%d\n", var);
}

Question Number 70

structure student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10];
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d",&num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        stud[i].studId = i + 1;
        printf("\nStudent ID %d\n", stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }
    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n", i + 1);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

structure student

struct student stud[10];

stud[i].studId = i + 1;

No change needed, program will give the correct output.

Question Number 71

The following program is used to find the maximum value in an array. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include< stdio.h>
int main()
{
    int array[100], maximum, size, count, location = 1;

    printf("\nEnter the number of elements in array : ");
    scanf("%d", &size);

    printf("Enter %d integers : ", size);

    maximum = array[0];

    for (count = 1; count <  size; count++)
    {
        if (array[count] > maximum)
        {
            maximum = array[count];
            location = count + 1;
        }
    }

    printf("Maximum element is present at location %d and its value is %d.\n", location, maximum);
    return 0;
}

for (count = 0; count > maximum; count++) scanf("\n%d", &array[count]);

for (count = 0; count < size; count++) scanf("\n%d", &array[count]);

for (count = 1; count > size; count++) scanf("\n%d", &array[count]);

No change needed, program will give the correct output.

Question Number 72

The following program is used to sort an array of structures. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10];
    int temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (stud[i].studId <  stud[j].studId)
            {
                temp = stud[i];
                stud[i] = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

struct student stud[10];

int temp;

stud[i] = stud[j];

No change needed, program will give the correct output.

Question Number 73

The following program is used to find length of a string without using string function. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

int string_length(char[]);

int main()
{
    char str[100];
    int length;

    printf("Input a string\n");
    scanf("%s", str);
    length = string_length(str);
    printf("Length of string %s = %d\n", str, length);

    return 0;
}

int string_length(char s[])
{
    int count = 0;

    while (s[count] != '\0')
        count++;

    return count;
}

length = string_length(str);

int string_length(char[]);

while (s[count] != '\0')

No change needed, program will give the correct output.

Question Number 74

Consider the following code snippet :

void main()
{
    int c=10;
    printf("%d",c);
}
Give the value of c before the line 'int c=10' gets executed.

Garbage value

None of the above.

Question Number 75

The following program is used to concatenate two strings without using string function. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

void str_cat(char[], char[]);

int main()
{
    char str1[100], str2[100];

    printf("Input a string : \n");
    scanf("%s", str1);

    printf("Input string to concatenate : \n");
    scanf("%s", str2);

    str_cat(str1, str2);

    printf("String obtained on concatenation : %s \n", str1);

    return 0;
}

void str_cat(char str1[], char str2[])
{
    int count = 0, d = 0;

    while (str2[d] != '\0')
    {
        str1[count] = str2[d];
        d++;
        count++;
    }

    while (str1[count] != '\0')
    {
        count++;
    }

    str1[count] = '\0';
}

str1[count] = '\0';

str1[count] = str2[d]; d++;

while (str1[count] != '\0') { count++; }

No change needed, program will give the correct output.

Question Number 76

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == fs1)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

if (ft == fs1)

while ((ch = fgetc(fs1)) != EOF) fputc(ch, ft);

while ((ch = fgetc(fs2)) != EOF) fputc(ch, ft);

No change needed, program will give the correct output.

Question Number 77

The following program is used to print the effective username of the current user when invoked. Which of the following statement(s) given in the choices should be added to make the program compile, link and run and give the desired output?

#include < stdio.h>
#include < stdlib.h>


int main()
{
    return 0;
}

system("C:\\WINDOWS\\System32\\whoami ");

systems("C:\\WINDOWS\\System32\\whoami ");

System_username("C:\\WINDOWS\\System32\\whoami ");

No change needed, program will give the correct output.

Question Number 78

Give the output of the following code snippet :

#define A 1 + 2
#define B 3 + 4
#define C 2 + 5
int main()
{
    int var = A * B - C;
    printf("%d\n", var);
}

Compilation error

Question Number 79

Which function is used to generate a sequence of pseudo-random integers from a specified range?

random()

rand()

srandom()

All of the above.

Question Number 80

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

fs1 = fopen("File1.txt", "r"); fs2 = fopen("File2.txt", "r");

fs1 = fileopen("File1.txt", "r"); fs2 = fileopen("File2.txt", "r");

fs1 = fopn("File1.txt", "r"); fs2 = fopn("File2.txt", "r");

No change needed, program will give the correct output.

Question Number 81

Give the output of the following code snippet :

int main()
{
    static int a;
    printf("%d\n",a);
    return 0;
}

Garbage value

Compiler error.

Question Number 82

#include < stdio.h>

int main()
{
    int n, count;
    int fact = 0;
    printf("Enter a value: ");
    scanf("%d", &n);
    if (n<  0)
        printf("Factorial of negative number does not exist");
    else
    {
        for (count = 1; count < = n; ++count)
        {
            fact = fact * count;
        }
        printf("Factorial of %d is %d ",n,fact);
    }
    return 0;
}

int fact = 0;

scanf("%d", &n);

fact = fact * count;

No change needed, program will give the correct output.

Question Number 83

Give the output of the following code snippet :

void main()
{
    int x = 5.3 % 2;
    printf("%d", x);
}

2.3

0.3

Compiler error.

Question Number 84

The following program is used to copy a file. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fileopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

FILE *source, *target;

source = fileopen("CopyFile.txt", "r");

if (source == NULL)

No change needed, program will give the correct output.

Question Number 85

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j != num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

for (; i < num1 + num2;)

else if (j != num1)

for (i = 0; i < num1 + num2;)

No change needed, program will give the correct output.

Question Number 86

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }


    }
}

else { for (j = 0; i < num1 + num2; j++) { result[i] = arry1[j]; j++; i--; } }

else { for (; i < num1 + num2;) { result[i] = arry1[j]; j++; i++; } }

else { for ( i=0; i < num1 + num2; i++) { result[j-1] = arry1[j]; j--; i++; } }

No change needed, program will give the correct output.

Question Number 87

#include < stdio.h>

int main()
{
    int value;
    printf("Enter the value to be checked : ");
    scanf("%d", &value);
    if ((value % 2) == -1)
        printf("%d is even", value);
    else
        printf("%d is odd ", value);
    return 0;
}

printf("Enter the value to be checked : ");

scanf("%d", &value);

if ((value % 2) == -1)

No change needed, program will give the correct output.

Question Number 88

Which of the following is the macro substitution directive in C?

#ifdef

#include

#define

All of the above

Question Number 89

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
        count++;
    }
    d[count] = '\0';
}

d[count] = s[count];

copy_str(str);

d[count] = '\0';

No change needed, program will give the correct output.

Question Number 90

The following program is used to reverse a string. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>
#include < string.h>

int main()
{
    char str[100], reverse[100];
    int strlength, count, d;

    printf("Input a string\n");
    scanf("%s",str);
    strlength = strlen(str);

    for (count = strlength - 1, d = 0; count >= 0; count--, d++)
        reverse[d] = str[count];

    reverse[d] = strlen;
    printf("%s\n", reverse);
    return 0;
}

reverse[d] = strlen;

for (count = strlength - 1, d = 0; count >= 0; count--, d++)

reverse[d] = str[count];

No change needed, program will give the correct output.

Question Number 91

The following program is used to copy a file. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < lib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

#include < lib.h>

fclose(source);

target = fopen("Destination.txt", "w");

No change needed, program will give the correct output.

Question Number 92

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

target = fopen("w");

target = fopen("Destination.txt", "w");

target = fopen(source, "w");

No change needed, program will give the correct output.

Question Number 93

The following program is used to copy strings without using string function. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(dest, str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
    }
    count++;
    d[count] = '\0';
}

count++;

d[count] = '\0';

copy_str(dest, str);

No change needed, program will give the correct output.

Question Number 94

#include < stdio.h>
int main()
{
    int value,num, reverse = 0;

    printf("Enter a number to reverse : ");
    scanf("%d", &value);

    num = value;

    if (num == 0)
    {
        reverse = reverse * 10;
        reverse = reverse + num % 10;
        num = num / 10;
    }

    if (value == reverse)
        printf(" %d is a Palindrome",value);
    else
        printf(" %d is not a Palindrome", value);

    return 0;
}

if (num == 0)

reverse = reverse + num % 10;

num = num / 10;

No change needed, program will give the correct output.

Question Number 95

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

if (source != NULL) { printf("Press any key to exit...\n"); exit(EXIT_FAILURE); }

if (source == 1) { printf("Press any key to exit...\n"); exit(EXIT_FAILURE); }

if (source == NULL) { printf("Press any key to exit...\n"); exit(EXIT_FAILURE); }

No change needed, program will give the correct output.

Question Number 96

Give the output of the following code snippet :

int main()
{
    int x = 2, y = 0;
    int z = y && (y != 10);
    printf("%d\n", z);
    return 0;
}

No output

Question Number 97

The following program is used to reverse a string. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>
#include < string.h>

int main()
{
    char str[100], reverse[100];
    int strlength, count, d;

    printf("Input a string\n");
    scanf("%s",str);
    strlength = strlength(str);

    for (count = strlength - 1, d = 0; count >= 0; count--, d++)
        reverse[d] = str[count];

    reverse[d] = '\0';
    printf("%s\n", reverse);
    return 0;
}

strlength = strlength(str);

for (count = strlength - 1, d = 0; count >= 0; count--, d++)

reverse[d] = str[count];

No change needed, program will give the correct output.

Question Number 98

Give the output of the following code snippet :

#define a 10
#define a 68
int main()
{
    printf("%c ",a);

    return 0;
}

Compiler error.

Question Number 99

Give the output of the following code snippet :

void main()
{
    1 <  2 ? return 1 : return 2;
}

Compilation error.

Question Number 100

Which of the following is an example for the format specification %.2f in the scanf() function?

23.2345

123.34

34.456

All of the above.

Question Number 101

Give the output of the following code snippet :

void main()
{
    int x = 98;
    char y = x;
    printf("%c\n", y);
}

Garbage value

Compiler error

Question Number 102

How many arguments does the putc () function take?

Question Number 103

Which of the following can be used for random number generation?

rand()

srand()

rndm()

Both 1 and 2.

Question Number 104

Give the output of the following code snippet :

void main()
{
    short int x;
    long int y;
    if(sizeof(x)==sizeof(y))
        printf("Hello");
    else
        printf("World");
}

Hello

World

No output

Compilation error

Question Number 105

The following program is used to generate the fibonacci series. Which of the following statement(s) given in the choices should be removed to make the program compile, link and run and give the desired output?



#include < stdio.h>

int main()
{
    int count, n, num1 = 0, num2 = 1, result = 0;
    printf("Enter number of terms: ");
    scanf("%d", &n);
    printf("Fibonacci Series:\n %d  %d  ", num1, num2);
    count = 2;
    while (count< n)
    {
        result = num1 + num2;
        count = num2;
        num1 = num2;
        num2 = result;
        ++count;
        printf("%d ", result);
    }
    return 0;
}

count = num2;

num1 = num2;

num2 = result;

No change needed, program will give the correct output.

Question Number 106

Give the output of the following code snippet :

#define SWAP(a,b)(a=a*b,b=a/b,a=a/b)
void main()
{
    int a=3,b=10,c=5;
    SWAP(a,b);
    printf("%d %d",a,b);
}

10 3

3 10

No output

Compilation error

Question Number 107

The following program is used to add two distances ( inch to feet ) using structures. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

struct Distance
{
    int feet;
    float inch;
};
struct Distance dist1, dist2, sum;

void main()
{
    printf("Enter information for 1st distance\n");
    printf("Enter feet: ");
    scanf("%d", &dist1.feet);
    printf("Enter inch: ");
    scanf("%f", &dist1.inch);
    printf("\nEnter information for 2nd distance\n");
    printf("Enter feet: ");
    scanf("%d", &dist2.feet);
    printf("Enter inch: ");
    scanf("%f", &dist2.inch);

    if (sum.inch>12.0)
    {
        sum.inch = sum.inch - 12.0;
        ++sum.feet;
    }
    printf("\nSum of distances=%d\'-%.1f\"", sum.feet, sum.inch);
}

sum = dist1.feet + dist2.feet; sum = dist1.inch + dist2.inch;

sum.feet = dist1.feet + dist2.feet; sum.inch = dist1.inch + dist2.inch;

sum.feet = dist1 + dist2.feet; sum.inch = dist1.inch + dist2;

No change needed, program will give the correct output.

Question Number 108

The following program is used to find length of a string without using string function. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

int string_length(char[]);

int main()
{
    char str[100];
    int length;

    printf("Input a string\n");
    scanf("%s", str);
    length = string_length(str);
    printf("Length of string %s = %d\n", str, length);

    return 0;
}

int string_length(char s[])
{
    int count = 0;

    if (s[count] != '\0')
        count++;

    return count;
}

if (s[count] != '\0')

length = string_length(str);

scanf("%s", str);

No change needed, program will give the correct output.

Question Number 109

Which of the following is a valid way to define constants using #define in C?

#define square a*a

#define CONST 10

#define MESSAGE "Hello"

All of the above.

Question Number 110

int string_length(char[]);

int main()
{
    char str[100];
    int length;

    printf("Input a string\n");
    scanf("%s", str[100]);
    length = string_length(str);
    printf("Length of string %s = %d\n", str, length);

    return 0;
}

int string_length(char s[])
{
    int count = 0;

    while (s[count] != '\0')
        count++;

    return count;
}

length = string_length(str);

while (s[count] != '\0')

scanf("%s", str[100]);

No change needed, program will give the correct output.

Question Number 111

#include < stdio.h>

int main()
{
    int value;
    printf("Enter the value to be checked : ");
    scanf("%d", &value);
    if ((value / 2) == 0)
        printf("%d is even", value);
    else
        printf("%d is odd ", value);
    return 0;
}

printf("Enter the value to be checked : ");

scanf("%d", &value);

if ((value / 2) == 0)

No change needed, program will give the correct output.

Question Number 112

The following program is used to copy a file. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }
    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

while ((ch = fgetc(source)) != EOF) fputc(ch, target);

target = fopen("Destination.txt", "w");

printf("Press any key to exit...\n"); exit(EXIT_FAILURE);

No change needed, program will give the correct output.

Question Number 113

Give the output of the following code snippet :


{
    int a = 5, b = -7, c = 0, d;
    d = ++a && ++b || ++c;
    printf("%d  %d  %d  %d  ", a,b, c, d);
}

6 6 0 1

6 -5 0 1

6 -6 0 1

6 5 1 1

Question Number 114

void str_cat(char[], char[]);

int main()
{
    char str1[100], str2[100];

    printf("Input a string : \n");
    scanf("%s", str1);

    printf("Input string to concatenate : \n");
    scanf("%s", str2);

    str_cat(str1, str2);

    printf("String obtained on concatenation : %s \n", str1);

    return 0;
}

void str_cat(char str1[], char str2[])
{
    int count = 0, d = 0;

    while (str1[count] != '\0')
    {
        count++;
    }
    while (str2[d] != '\0')
    {
        count++;
    }

    str1[count] = '\0';
}

str1[count] = str2[d]; d++;

str1[count] = str[count+1]; d++;

str1[count] = str2[d]; d--;

No change needed, program will give the correct output.

Question Number 115

The following program is used to swap two strings. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

int main()
{
    char str1[100], str2[100], temp[50];

    printf("Enter the str1 string\n");
    scanf("%s", str1);

    printf("Enter the str2 string\n");
    scanf("%s", str2);

    printf("\nBefore Swapping\n");
    printf("First string: %s\n", str1);
    printf("Second string: %s\n\n", str2);

    strcpy(temp, str2);
    strcpy(str1, str2);
    strcpy(str2, temp);

    printf("After Swapping\n");
    printf("First string: %s\n", str1);
    printf("Second string: %s\n", str2);

    return 0;
}

strcpy(temp, str2);

strcpy(str1, str2);

strcpy(str2, temp);

No change needed, program will give the correct output.

Question Number 116

#include < stdio.h>
int main()
{
    int value,num, reverse = 0;

    printf("Enter a number to reverse : ");
    scanf("%d", &value);

    num = value;

    while (num != 0)
    {
        reverse = reverse * 10;
        reverse = reverse + num % 10;
        num = num + 10;
    }

    if (value == reverse)
        printf(" %d is a Palindrome",value);
    else
        printf(" %d is not a Palindrome", value);

    return 0;
}

num = value;

reverse = reverse * 10;

num = num + 10;

No change needed, program will give the correct output.

Question Number 117

Which is true about function tolower in C?

The function tolower is defined in ctype.h

Converts an upper case letter to lower case.

Returns the ASCII value of the lower case character.

Both 1 and 2

Question Number 118

Which of the following are types of C constants ?

Integer constants

String constants.

Octal / Hexadecimal constants

All of the above.

Question Number 119

How many characters of pushback are guaranteed per file when ungetc() is used.

Two

One

Cannot be determined.

Zero

Question Number 120

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(dest, str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str()
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
        count++;
    }
    d[count] = '\0';
}

while (s[count] != '\0')

d[count] = s[count];

void copy_str()

No change needed, program will give the correct output.

Question Number 121

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud,temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (stud[i].studId <  stud[j].studId)
            {
                temp = stud[i];
                stud[i] = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

struct student stud;

for (i = 0; i < num; i++)

temp = stud[i];

No change needed, program will give the correct output.

Question Number 122

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j > num1 && k > num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

else if (j == num1)

result[i] = arry1[j];

if (j > num1 && k > num2)

No change needed, program will give the correct output.

Question Number 123

Which of the following is true about the ungetc() function in C?

Used to get a char from input.

Used to get an integer as input.

Used to push a character back to the file

None of the above.

Question Number 124

The following program is used to copy strings without using string function. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(dest, str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
    }
    d[count] = '\0';
}

count++;

count--;

s[count] = '\0';

No change needed, program will give the correct output.

Question Number 125

Give the output of the following code snippet :

void main()
{
    int k = 8;
    int m = 7;
    int z = k <  m ? k++ : m++;
    printf("%d", z);
}

Question Number 126

The #elif directive cannot be used after the conditional #else directive.

Always true

Always false

Sometimes true and sometimes false.

Not enough information to provide the accurate answer.

Question Number 127

The following program is used to sort an array of structures. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10],temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (stud[i].studId <  stud[j].studId)
            {

                stud[i] = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

temp = stud[i];

temp = stud[j];

temp = stud;

No change needed, program will give the correct output.

Question Number 128

The following program is used to find the substring in a string without using string function. Which of the following statement(s) given in the choices should corrected to make the program compile, link and run and give the desired output?

int main()
{
    char str[100], sub[100];
    int position, length, count = 0;

    printf("Input a string  : \n");
    scanf("%s",str);

    printf("Enter the position and length of substring\n");
    scanf("%d%d", &position, &length);

    while (count <  length)
    {
        str[count] = sub[position + count - 1];
        count++;
    }
    sub[count] = '\0';

    printf("Required substring is %s\n", sub);

    return 0;
}

sub[count] = '\0';

scanf("%d%d", &position, &length);

str[count] = sub[position + count - 1];

No change needed, program will give the correct output.

Question Number 129

The following program is used to copy a file. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen(source);

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

target = fopen(source);

fclose(source);

fputc(ch, target);

No change needed, program will give the correct output.

Question Number 130

What are the qualifiers that can be applied to an integer data type in C?

short

unsigned

signed

All of the above.

Question Number 131

Give the output of the following code :

int main()
{
    int x=12, y=7, z;
    z = x!=4 || y == 2;
    printf("%d\n", z);
    return 0;
}

Question Number 132

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student[10],temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (stud[i].studId <  stud[j].studId)
            {
                temp = stud[i];
                stud[i] = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

struct student[10],temp;

if (stud[i].studId < stud[j].studId)

stud[j] = temp;

No change needed, program will give the correct output.

Question Number 133

The following program is used to generate the palindrome of a number. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include < stdio.h>
int main()
{
    int value,num, reverse = 0;

    printf("Enter a number to reverse : ");
    scanf("%d", &value);

    num = value;

    while (num != 0)
    {
        reverse = reverse * 10;
        reverse = reverse + num % 10;
        num = num / 10;
    }

    if (value == reverse)
        printf(" %d is a Palindrome",value);
    else
        printf(" %d is not a Palindrome", value);

    return 0;
}

reverse = reverse * 10;

reverse = reverse + num % 10;

num = num / 10;

No change needed, program will give the correct output.

Question Number 134

void bubble_sort(int arry[], int n);
int main()
{
    int array[100], n, c;

    printf("Enter number of elements\n");
    scanf("%d", &n);

    printf("Enter %d integers\n", n);

    for (c = 0; c <  n; c++)
        scanf("%d", &array[c]);

    bubble_sort(array, n);

    printf("Sorted array in ascending order:\n");

    for (c = 0; c <  n; c++)
        printf("%d\n", array[c]);

    return 0;
}

void bubble_sort(int arry[], int n)
{
    int c, d, temp;

    for (c = 0; c <  (n - 1); c++)
    {
        for (d = 0; d > n ; d++)
        {
            if (arry[d] > arry[d + 1])
            {

                temp = arry[d];
                arry[d] = arry[d + 1];
                arry[d + 1] = temp;
            }
        }
    }
}

for (c = 0; c < (n - 1); c++)

for (d = 0; d > n ; d++)

if (arry[d] > arry[d + 1])

No change needed, program will give the correct output.

Question Number 135

The following program is used to check if the given number is a prime number or not. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include< stdio.h>

int main()
{
    int value, i, flag = 0;
    printf("Enter a positive value: ");
    scanf("%d", &value);
    for (i = 2; i < = value % 2; ++i)
    {
        if (value % i == 0)
        {
            flag = 1;
            break;
        }
    }
    if (flag == 0)
        printf("%d is a prime number", value);
    else
        printf("%d is not a prime number", value);
    return 0;
}

scanf("%d", &value);

for (i = 2; i < = value % 2; ++i)

if (flag == 0)

No change needed, program will give the correct output.

Question Number 136

The following program is used to delete an element from an array. Which of the following statement(s) given in the choices should be removed to make the program compile, link and run and give the desired output?

#include< stdio.h>
int main()
{
    int array[100], position, count, n;

    printf("Enter number of elements in array : \n");
    scanf("%d", &n);

    printf("Enter %d elements : \n", n);

    for (count = 0; count <  n; count++)
        scanf("%d", &array[count]);

    printf("Enter the location where you wish to delete element : \n");
    scanf("%d", &position);

    if (position >= n + 1)
        printf("Deletion not possible.\n");
    else
    {
        for (count = position - 1; count <  n - 1; count++)
        {
            array[count] = array[count + 1];
            array[count + 1] = array[count -1];
        }


        printf("Resultant array : ");

        for (count = 0; count <  n - 1; count++)
            printf("%d\n", array[count]);
    }

    return 0;
}

array[count] = array[count + 1];

array[count + 1] = array[count -1];

for (count = position - 1; count < n - 1; count++){

No change needed, program will give the correct output.

Question Number 137

structure complex
{
    float real;
    float imag;
};
struct complex Add(struct complex n1, struct complex n2);
int main()
{
    struct complex n1, n2, temp;
    printf("For first complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n1.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n1.imag);
    printf("For second complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n2.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n2.imag);
    temp = Add(n1, n2);
    printf("Sum=%.1f+%.1fi", temp.real, temp.imag);
    return 0;
}
struct complex Add(struct complex n1, struct complex n2)
{
    struct complex temp;
    temp.real = n1.real + n2.real;
    temp.imag = n1.imag + n2.imag;
    return(temp);
}

structure complex

temp = Add(n1, n2);

struct complex temp;

No change needed, program will give the correct output.

Question Number 138

Give the output of the following code snippet :

void func(int i)
{
    void j;
    j=i;
    printf("%d",j);
}
void main()
{
    int x=10;
    func(x);
    printf("%d",x);
}

Garbage value

Compilation error

Question Number 139

Which of the following are types of C constants ?

Integer constants

Real or floating point constants.

Character constants

All of the above.

Question Number 140

int str_compare(char[], char[]);

int main()
{
    int flag;
    char str1[100], str2[100];

    printf("Input first string\n");
    scanf("%s", str1);

    printf("Input second string\n");
    scanf("%s", str2);

    flag = str_compare(str1, str2);

    if (flag == 0)
        printf("Entered strings are equal.\n");
    else
        printf("Entered strings are not equal.\n");

    return 0;

}

int str_compare(char a[], char b[])
{
    int count = 0;

    while (a[count] == b[count])
    {
        while (a[count] == '\0' || b[count] == '\0')
            continue;
        count++;
    }

    if (a[count] == '\0' && b[count] == '\0')
        return 0;
    else
        return -1;
}

while (a[count] == b[count])

while (a[count] == '\0' || b[count] == '\0') continue;

if (a[count] == '\0' && b[count] == '\0') return 0;

No change needed, program will give the correct output.

Question Number 141

The following program is used to delete an element from an array. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include< stdio.h>
int main()
{
    int array[100], position, count, n;

    printf("Enter %d elements : \n", n);

    for (count = 0; count <  n; count++)
        scanf("%d", &array[count]);

    printf("Enter number of elements in array : \n");
    scanf("%d", &n);

    printf("Enter the location where you wish to delete element : \n");
    scanf("%d", &position);

    if (position >= n + 1)
        printf("Deletion not possible.\n");
    else
    {
        for (count = position - 1; count <  n - 1; count++)
            array[count] = array[count + 1];

        printf("Resultant array : ");

        for (count = 0; count <  n - 1; count++)
            printf("%d\n", array[count]);
    }

    return 0;
}

printf("Enter number of elements in array : \n"); scanf("%d", &n);

printf("Enter the location where you wish to delete element : \n"); scanf("%d", &position);

for (count = 0; count < n - 1; count++) printf("%d\n", array[count]);

No change needed, program will give the correct output.

Question Number 142

The value of EOF (End of file) :

-1

Question Number 143

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(dest, str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
        count--;
    }
    d[count] = '\0';
}

while (s[count] != '\0')

d[count] = '\0';

count--;

No change needed, program will give the correct output.

Question Number 144

The following program is used to sort an array of values using Bubble sort technique. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

void bubble_sort(int arry[], int n);
int main()
{
    int array[100], n, c;

    printf("Enter number of elements\n");
    scanf("%d", &n);

    printf("Enter %d integers\n", n);

    for (c = 0; c <  n; c++)
        scanf("%d", &array[c]);

    bubble_sort(array, n);

    printf("Sorted array in ascending order:\n");

    for (c = 0; c <  n; c++)
        printf("%d\n", array[c]);

    return 0;
}

void bubble_sort(int arry[], int n)
{
    int c, d, temp;

    for (c = 0; c <  (n - 1); c++)
    {
        for (d = 0; d <  n - c - 1; d++)
        {
            if (arry[d] > arry[d + 1])
            {
                arry[d + 1] = temp;
            }
        }
    }
}

temp = arry[d]; arry[d] = arry[d + 1];

temp = arry[d + 1]; arry[d - 1] = arry[d + 1];

arry[d] = arry[d + 2];

No change needed, program will give the correct output.

Question Number 145

Give the output of the following code snippet:

#define SQUARE(x) x*x

int main()
{
    float t=2,a;
    a =SQUARE(t);
    printf("Result = %f", a);
    return 0;
}

0.000000

4.000000

Question Number 146

Give the output of the following code snippet :

#if(10)
int main()
{
    printf("Hello World");
    return 0;
}
#else
int main()
{
    printf("Hello World :Round two");
}
#endif

Hello World

Hello World : Round two

No output

Compiler error

Question Number 147

void bubble_sort(int arry[], int n);
int main()
{
    int array[100], n, c;

    printf("Enter number of elements\n");
    scanf("%d", &n);

    printf("Enter %d integers\n", n);

    for (c = 0; c <  n; c++)
        scanf("%d", &array[c]);

    bubble_sort(array, n);

    printf("Sorted array in ascending order:\n");

    for (c = 0; c <  n; c++)
        printf("%d\n", array[c]);

    return 0;
}

void bubble_sort(int arry[], int n)
{
    int c, d, temp;

    for (c = 0; c <  (n - 1); c++)
    {
        for (d = 0; d <  n - c - 1; d++)
        {
            if (arry[d] > arry[d + 1])
            {

                temp = arry[d];
                arry[d + 1] = temp;
            }
        }
    }
}

temp = arry[d];

arry[d] = arry[d + 1];

arry[d + 1] = temp;

No change needed, program will give the correct output.

Question Number 148

The following program is used to delete an element from an array. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include< stdio.h>
int main()
{
    int array[100], position, count, n;

    printf("Enter number of elements in array : \n");
    scanf("%d", &n);

    printf("Enter %d elements : \n", n);

    for (count = 0; count <  n; count++)
        scanf("%d", &array[count]);

    printf("Enter the location where you wish to delete element : \n");
    scanf("%d", &position);

    if (position >= n + 1)
        printf("Deletion not possible.\n");
    else
    {
        for (count = 0; count <  position; count++)
            array[count] = array[count + 1];

        printf("Resultant array : ");

        for (count = 0; count <  n - 1; count++)
            printf("%d\n", array[count]);
    }

    return 0;
}

for (count = 0; count < position; count++)

array[count] = array[count + 1];

for (count = 0; count < n - 1; count++)

No change needed, program will give the correct output.

Question Number 149

The following program is used to compare two strings without using string function. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

int str_compare(char[], char[]);

int main()
{
    int flag;
    char str1[100], str2[100];

    printf("Input first string\n");
    scanf("%s", str1);

    printf("Input second string\n");
    scanf("%s", str2);

    flag = str_compare(str1, str2);

    if (flag == 0)
        printf("Entered strings are equal.\n");
    else
        printf("Entered strings are not equal.\n");

    return 0;

}

int str_compare(char a[], char b[])
{
    int count = 0;
    if (a[count] == '\0' || b[count] == '\0')
        break;

    while (a[count] == b[count])
    {
        count++;
    }

    if (a[count] == '\0' && b[count] == '\0')
        return 0;
    else
        return -1;
}

if (a[count] == '\0' || b[count] == '\0') break;

while (a[count] == b[count]) count++;

if (a[count] == '\0' && b[count] == '\0') return 0;

No change needed, program will give the correct output.

Question Number 150

Give the use of the -(minus) sign in the prinft() format control string :

Left-justify the output within the specified field.

Include a negative sign to the value.

To convert positive to negative values

None of the above.

Question Number 151

In printf function in C, which is the format specifier used to print strings?

Question Number 152

The following program is used to swap two strings. Which of the following statement(s) given in the choices should be removed to make the program compile, link and run and give the desired output?

int main()
{
    char str1[100], str2[100], temp[50];

    printf("Enter the str1 string\n");
    scanf("%s", str1);

    printf("Enter the str2 string\n");
    scanf("%s", str2);

    printf("\nBefore Swapping\n");
    printf("First string: %s\n", str1);
    printf("Second string: %s\n\n", str2);

    strcpy(temp, str1);
    strcpy(str1, str2);
    strcpy(str2, str1);
    strcpy(str2, temp);

    printf("After Swapping\n");
    printf("First string: %s\n", str1);
    printf("Second string: %s\n", str2);

    return 0;
}

strcpy(temp, str1);

strcpy(str1, str2);

strcpy(str2, str1);

No change needed, program will give the correct output.

Question Number 153

struct Distance dist1, dist2, sum;

void main()
{
    printf("Enter information for 1st distance\n");
    printf("Enter feet: ");
    scanf("%d", &dist1.feet);
    printf("Enter inch: ");
    scanf("%f", &dist1.inch);
    printf("\nEnter information for 2nd distance\n");
    printf("Enter feet: ");
    scanf("%d", &dist2.feet);
    printf("Enter inch: ");
    scanf("%f", &dist2.inch);
    sum.feet = dist1.feet + dist2.feet;
    sum.inch = dist1.inch + dist2.inch;

    if (sum.inch>12.0)
    {
        sum.inch = sum.inch - 12.0;
        ++sum.feet;
    }
    printf("\nSum of distances=%d\'-%.1f\"", sum.feet, sum.inch);
}

struct Distance { int feet; float inch; };

structure Distance { int feet; float inch; };

struct Distance { int feet; float inch; }

No change needed, program will give the correct output.

Question Number 154

The following program is used to merge the contents of two files. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    ft = fopen("Final.txt", "w");

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

fs1 = fopen("File1.txt", "r"); fs2 = fopen("File2.txt", "r");

while ((ch = fgetc(fs1)) != EOF) fputc(ch, ft);

ft = fopen("Final.txt", "w");

No change needed, program will give the correct output.

Question Number 155

While including a header file, if the file name is specified between quotes, then where is the file searched?

File is searched for only in the current working directory.

File is searched for in the current directory and then the parent directories present in the path.

Either 1 or 2

None of the above.

Question Number 156

int string_length(char[]);

int main()
{
    char str[100];
    int length;

    printf("Input a string\n");
    scanf("%s", str);
    length = string_length(str);
    printf("Length of string %s = %d\n", str, length);

    return 0;
}

void string_length(char s[])
{
    int count = 0;

    while (s[count] != '\0')
        count++;

    return count;
}

while (s[count] != '\0')

void string_length(char s[])

return count;

No change needed, program will give the correct output.

Question Number 157

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

source = fopen("CopyFile.txt", "r");

source = open("CopyFile.txt", "r");

source = fileopen("CopyFile.txt", "r");

No change needed, program will give the correct output.

Question Number 158

The following program is used to check if the given number is a prime number or not. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include< stdio.h>

int main()
{
    int value, i, flag = 0;
    printf("Enter a positive value: ");
    scanf("%d", &value);
    for (i = 2; i < = value / 2; ++i)
    {
        if (value % i == 0)
        {
            break;
        }
    }
    if (flag == 0)
        printf("%d is a prime number", value);
    else
        printf("%d is not a prime number", value);
    return 0;
}

flag = flag/2;

flag = value ;

flag = 1;

No change needed, program will give the correct output.

Question Number 159

Which of the following is a ternary operator?

>>=

Question Number 160

struct complex
{
    float real;
    float imag;
};
struct complex Add(complex n1, complex n2);
int main()
{
    struct complex n1, n2, temp;
    printf("For first complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n1.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n1.imag);
    printf("For second complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n2.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n2.imag);
    temp = Add(n1, n2);
    printf("Sum=%.1f+%.1fi", temp.real, temp.imag);
    return 0;
}
struct complex Add(struct complex n1, struct complex n2)
{
    struct complex temp;
    temp.real = n1.real + n2.real;
    temp.imag = n1.imag + n2.imag;
    return(temp);
}

temp.real = n1.real + n2.real;

temp.imag = n1.imag + n2.imag;

struct complex Add(complex n1, complex n2);

No change needed, program will give the correct output.

Question Number 161

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10],temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (stud[i].studId == stud[j].studId)
            {
                temp = stud[i];
                stud[i] = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

for (i = 0; i < num; i++)

for (int j = 0; j < i; j++)

if (stud[i].studId == stud[j].studId)

No change needed, program will give the correct output.

Question Number 162

The following program is used to find the maximum value in an array. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include< stdio.h>
int main()
{
    int array[100], maximum, size, count, location = 1;

    printf("\nEnter the number of elements in array : ");
    scanf("%d", &size);

    printf("Enter %d integers : ", size);

    for (count = 0; count <  size; count++)
        scanf("\n%d", &array[count]);

    maximum = array[0];

    for (count = 1; count <  size; count++)
    {
        if (array[count] > maximum)
        {
            location = count + 1;
        }
        maximum = array[count];
    }


    printf("Maximum element is present at location %d and its value is %d.\n", location, maximum);
    return 0;
}

if (array[count] > maximum)

maximum = array[0];

maximum = array[count];

No change needed, program will give the correct output.

Question Number 163

#include< stdio.h>
int main()
{
    int array[100], maximum, size, count, location = 1;

    printf("\nEnter the number of elements in array : ");
    scanf("%d", &size);

    printf("Enter %d integers : ", size);

    for (count = 0; count <  size; count++)
        scanf("\n%d", &array[count]);

    maximum = array[0];

    for (count = 1; count <  size; count++)
    {
        if (array[count] > maximum)
        {
            maximum = array[count];
            location = count + 1;
        }
    }

    printf("Maximum element is present at location %d and its value is %d.\n", location, maximum);
    return 0;
}

if (array[count] > maximum)

maximum = array[0];

maximum = array[count];

No change needed, program will give the correct output.

Question Number 164

Give the output of the following code snippet :


void main()
{
    int b = 5 & 4 & 6;
    printf("%d", b);
}

Question Number 165

The following program is used to delete an element from an array. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include< stdio.h>
int main()
{
    int array[100], position, count, n;

    printf("Enter number of elements in array : \n");
    scanf("%d", &n);

    printf("Enter %d elements : \n", n);

    for (count = 0; count <  n; count++)
        scanf("%d", &array[count]);

    printf("Enter the location where you wish to delete element : \n");
    scanf("%d", &position);

    if (position >= n + 1)
        printf("Deletion not possible.\n");
    else
    {

        printf("Resultant array : ");

        for (count = 0; count <  n - 1; count++)
            printf("%d\n", array[count]);
    }

    return 0;
}

for (count = position - 1; count < n - 1; count--) array[count -1] = array[count + 1];

array[count] = array[count + 1];

for (count = position - 1; count < n - 1; count++) array[count] = array[count + 1];

No change needed, program will give the correct output.

Question Number 166

What are the restrictions places on the names of variables and constants in C?

Variable name can contain letters ,digits and any special characters.

The first character should be a letter.

Keywords such as if, else, for etc. should can used as variable names.

All of the above.

Question Number 167


{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10];
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d",&num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        stud[i].studId = i + 1;
        printf("\nStudent ID %d\n", stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }
    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n", i + 1);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

struct student

structure student

struct

No change needed, program will give the correct output.

Question Number 168

Give the output of the following code snippet :

#define join(p,q) p##q
int main()
{
    int join(a,b)=45;
    printf("%d",ab);
    return 0;
}

No output

Compiler error

Question Number 169

Give the output of the following code snippet :

#define FUNC(x)  while(i!=0) \
				{\
				  i--;\
				  x--;\
				  printf("%d ",x);\
				  }

int main()
{
    int z=10,i=2;
    FUNC(z);
}

10 10

10 9

9 8

9 9

Question Number 170

Give the output of the following code snippet :

int main()
{
#ifdef Hello
    printf("Hello\t");
#else
    printf("World\t");
#endif
}

Hello

World

No output

Compilation error

Question Number 171

The following program is used to generate the fibonacci series. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?



#include < stdio.h>

int main()
{
    int count, n, num1 = 0, num2 = 1, result = 0;
    printf("Enter number of terms: ");
    scanf("%d", &n);
    printf("Fibonacci Series:\n %d  %d  ", num1, num2);
    count = 2;
    while (count< n)
    {
        result = num1 + num2;
        num1 = num2;
        ++count;
        printf("%d ", result);
    }
    return 0;
}

num1 = num2/num1;

num1 = num1 + num2;

num2 = result;

No change needed, program will give the correct output.

Question Number 172

In printf function in C, which is the format specifier used to print hexadecimal values?

Question Number 173

struct complex
{
    float real;
    float imag;
};
complex Add(struct complex n1, struct complex n2);
int main()
{
    struct complex n1, n2, temp;
    printf("For first complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n1.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n1.imag);
    printf("For second complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n2.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n2.imag);
    temp = Add(n1, n2);
    printf("Sum=%.1f+%.1fi", temp.real, temp.imag);
    return 0;
}
struct complex Add(struct complex n1, struct complex n2)
{
    struct complex temp;
    temp.real = n1.real + n2.real;
    temp.imag = n1.imag + n2.imag;
    return(temp);
}

complex Add(struct complex n1, struct complex n2);

struct complex

temp = Add(n1, n2);

No change needed, program will give the correct output.

Question Number 174

#include< stdio.h>
int main()
{
    int array[100], position, count, n;

    printf("Enter number of elements in array : \n");
    scanf("%d", &n);

    printf("Enter %d elements : \n", n);

    for (count = 0; count <  n; count++)
        scanf("%d", &array[count]);

    printf("Enter the location where you wish to delete element : \n");
    scanf("%d", &position);

    if (position >= n + 1)
        printf("Deletion not possible.\n");
    else
    {
        for (count = position - 1; count > 0; count--)
            array[count] = array[count + 1];

        printf("Resultant array : ");

        for (count = 0; count <  n - 1; count++)
            printf("%d\n", array[count]);
    }

    return 0;
}

for (count = 0; count < position; count++)

array[count] = array[count + 1];

for (count = position - 1; count > 0; count--)

No change needed, program will give the correct output.

Question Number 175

Give the output of the following code :

void main()
{
    int x = 0, y = 2, z = 3;
    int a = x & y | z;
    printf("%d", a);
}

Question Number 176

The following program is used to add 'n' numbers. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include< stdio.h>

int main()
{
    int num, sum = 0, count, value;

    printf("Enter the number of integers to be added : \n");
    scanf("%d", &num);

    printf("Enter %d integers\n", num);

    for (count = sum; count < = 0 ; count--)
    {
        scanf("%d", &value);
        sum = sum + value;
    }

    printf("Sum of entered integers = %d\n", sum);

    return 0;
}

for (count = sum; count < = 0 ; count--)

scanf("%d", &value);

sum = sum + value;

No change needed, program will give the correct output.

Question Number 177

Give the output of the following code snippet :

void main()
{
    int k = sqrt(-4);
    printf("%d\n", k);
}

NAN

Compiler error

Question Number 178

Which of the following are examples of mathematical functions in C?

atan2()

fabs()

exp()

All of the above.

Question Number 179

Which of the following statements is true about the function srand()?

Sets the seed for rand.

Helps to generate square root of a value.

Is defined in the header file math.h

All of the above.

Question Number 180

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

result[i] = arry2[k]; k -- ;

result[i] = arry2[k]; k++;

result[k + 1] = arry2[k]; k++;

No change needed, program will give the correct output.

Question Number 181

#include < stdio.h>

int main()
{
    int n, count;
    int fact = 1;
    printf("Enter a value: ");
    scanf("%d", &n);
    if (n<  0)
        printf("Factorial of negative number does not exist");
    else
    {
        for (count = 1; count < = fact; ++count)
        {
            fact = fact * count;
        }
        printf("Factorial of %d is %d ",n,fact);
    }
    return 0;
}

int fact = 1;

for (count = 1; count < = fact; ++count)

fact = fact * count;

No change needed, program will give the correct output.

Question Number 182

Which of the following data types fall under the floating types classification in C?

Float

double

Long double

All of the above

Question Number 183

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(dest, str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
        count++;
    }
    d[count] = '\0';
}

copy_str(dest, str);

while (s[count] != '\0')

d[count] = s[count];

No change needed, program will give the correct output.

Question Number 184

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10],temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (stud[i].studId <  stud[j].studId)
            {
                temp = stud[i];
                temp = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

temp = stud[j];

if (stud[i].studId < stud[j].studId)

for (i = 0; i < num; i++)

No change needed, program will give the correct output.

Question Number 185

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10],temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (struct[i].studId <  struct[j].studId)
            {
                temp = stud[i];
                stud[i] = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

if (struct[i].studId < struct[j].studId)

temp = stud[i];

for (i = 0; i < num; i++)

No change needed, program will give the correct output.

Question Number 186

Give the output of the following code snippet :

void fun()
{
    printf("%d\n", test(-3, 3));
}
int main()
{
#define test(x, y) x / y + x
    fun();
}

-8

-4

Compiler error

Question Number 187



#include < stdio.h>

int main()
{
    int count, n, num1 = 0, num2 = 1, result = 0;
    printf("Enter number of terms: ");
    scanf("%d", &n);
    printf("Fibonacci Series:\n %d  %d  ", num1, num2);
    count = 2;
    while (count< n)
    {
        result = num1 + num2;
        ++count;
        printf("%d ", result);
    }
    num1 = num2;
    num2 = result;
    return 0;
}

result = num1 + num2;

num1 = num2; num2 = result;

while (count< n)

No change needed, program will give the correct output.

Question Number 188


#include < stdio.h>

int main()
{
    int count, n, num1 = 0, num2 = 1, result = 0;
    printf("Enter number of terms: ");
    scanf("%d", &n);
    printf("Fibonacci Series:\n %d  %d  ", num1, num2);
    count = 2;
    {
        result = num1 + num2;
        num1 = num2;
        num2 = result;
        ++count;
        printf("%d ", result);
    }
    return 0;
}

if (count == n)

while (count< n)

while (count != n)

No change needed, program will give the correct output.

Question Number 189

Give the output of the following code snippet :

#define CUBE(x) (x*x*x)
#define M 10
#define N M+1

int main()
{

    int volume =CUBE(3+2);

    printf("%d %d ",volume,N);

    return 0;
}

17 11

343 11

17 0

Compiler error

Question Number 190

#include < stdio.h>

int main()
{
    int value;
    printf("Enter the value to be checked : ");
    scanf("%d", &value);
    if ((value % 2) == 0)
        printf("%d is even", value);
    else  if ((value / 2) == -1)
        value++;
    else
        printf("%d is odd ", value);

    return 0;
}

if ((value % 2) == 0) printf("%d is even", value);

else if ((value / 2) == -1) value++;

else printf("%d is odd ", value);

No change needed, program will give the correct output.

Question Number 191

int string_length(char[]);

int main()
{
    char str[100];
    int length;

    printf("Input a string\n");
    scanf("%s", str);
    length = string_length(str);
    printf("Length of string %s = %d\n", str, length);

    return 0;
}

int string_length(char s[])
{
    int count = 0;
    count++;

    while (s[count] != '\0')
        return count;
}

count++;

scanf("%s", str);

length = string_length(str);

No change needed, program will give the correct output.

Question Number 192

The following program is used to add two distances ( inch to feet ) using structures. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

struct Distance
{
    int feet;
    float inch;
};
struct Distance dist1, dist2, sum;

void main()
{
    printf("Enter information for 1st distance\n");
    printf("Enter feet: ");
    scanf("%d", &dist1.feet);
    printf("Enter inch: ");
    scanf("%f", &dist1.inch);
    printf("\nEnter information for 2nd distance\n");
    printf("Enter feet: ");
    scanf("%d", &dist2.feet);
    printf("Enter inch: ");
    scanf("%f", &dist2.inch);
    sum = dist1.feet + dist2.feet;
    sum.inch = dist1.inch + dist2.inch;

    if (sum.inch>12.0)
    {
        sum.inch = sum.inch - 12.0;
        ++sum.feet;
    }
    printf("\nSum of distances=%d\'-%.1f\"", sum.feet, sum.inch);
}

struct Distance dist1, dist2, sum;

sum = dist1.feet + dist2.feet;

if (sum.inch>12.0)

No change needed, program will give the correct output.

Question Number 193

Name the escape sequence to print a tab space in printf function in C :

Question Number 194

The following program is used to generate the fibonacci series. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?



#include < stdio.h>

int main()
{
    int count, n, num1 = 0, num2 = 1, result = 0;
    printf("Enter number of terms: ");
    scanf("%d", &n);
    printf("Fibonacci Series:\n %d  %d  ", num1, num2);
    count = 2;
    if (count< n)
    {
        result = num1 + num2;
        num1 = num2;
        num2 = result;
        ++count;
        printf("%d ", result);
    }
    return 0;
}

if (count< n)

num1 = num2;

num2 = result;

No change needed, program will give the correct output.

Question Number 195

Relational operators have greater precedence than arithmetic operators. True or false?

Always true

Always false

Sometimes true and sometimes false.

No enough information to provide a valid answer.

Question Number 196

Give the output of the following code snippet :

void func();
void main()
{
    int a=100;
#define VAR 200
    func();
    printf("%d ",VAR+a);

}
#define VAR 100
void func()
{
    printf("%d ",VAR);
}

200 200

100 300

100 200

100 300

Question Number 197

Shifting a value x two positions to the left i.e x << 2 is equivalent to :

Multiplication of x by 4.

Division of x by 4.

Adding x to 4.

Subtracting 4 from x.

Question Number 198

#include < stdio.h>
int main()
{
    int value,num, reverse = 0;

    printf("Enter a number to reverse : ");
    scanf("%d", &value);

    num = value;

    {
        reverse = reverse * 10;
        reverse = reverse + num % 10;
        num = num / 10;
    }

    if (value == reverse)
        printf(" %d is a Palindrome",value);
    else
        printf(" %d is not a Palindrome", value);

    return 0;
}

while (num < = 0)

while (num == 0)

while (num != 0)

No change needed, program will give the correct output.

Question Number 199

The following program is used to add two complex numbers by passing structure to a function. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

struct complex
{
    float real;
    float imag;
};
struct complex Add(struct complex n1, struct complex n2);
int main()
{
    struct complex n1, n2, temp;
    printf("For first complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n1.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n1.imag);
    printf("For second complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n2.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n2.imag);
    temp = Add(n1, n2);
    printf("Sum=%.1f+%.1fi", temp.real, temp.imag);
    return 0;
}
struct complex Add(struct complex n1, struct complex n2)
{
    return(temp);
    struct complex temp;
    temp.real = n1.real + n2.real;
    temp.imag = n1.imag + n2.imag;
}

temp = Add(n1, n2);

temp.imag = n1.imag + n2.imag;

return(temp);

No change needed, program will give the correct output.

Question Number 200

int str_compare(char[], char[]);

int main()
{
    int flag;
    char str1[100], str2[100];

    printf("Input first string\n");
    scanf("%s", str1);

    printf("Input second string\n");
    scanf("%s", str2);

    flag = str_compare(str1, str2);

    if (flag == 0)
        printf("Entered strings are equal.\n");
    else
        printf("Entered strings are not equal.\n");

    return 0;

}

int str_compare(char a[], char b[])
{
    int count = 0;

    while (a[count] == b[count])
    {
        if (a[count] == '\0' || b[count] == '\0')
            break;
        count++;
    }
    return -1;
}

if (a[count] == '\0' || b[count] == '\0') return 0;

if (a[count] == '\0') return a[count];

if (a[count] == '\0' && b[count] == '\0') return 0;

No change needed, program will give the correct output.

Question Number 201

void str_cat(char[], char[]);

int main()
{
    char str1[100], str2[100];

    printf("Input a string : \n");
    scanf("%s", str1);

    printf("Input string to concatenate : \n");
    scanf("%s", str2);

    str_cat(str1, str2);

    printf("String obtained on concatenation : %s \n", str1);

    return 0;
}

void str_cat(char str1[], char str2[])
{
    int count = 0, d = 0;

    if (str1[count] != '\0')
    {
        count++;
    }
    while (str2[d] != '\0')
    {
        str1[count] = str2[d];
        d++;
        count++;
    }

    str1[count] = '\0';
}

if (str1[count] != '\0')

while (str2[d] != '\0')

str1[count] = '\0';

No change needed, program will give the correct output.

Question Number 202

The function ungetc() may be used with which of the following functions?

scanf

getc

getchar

All of the above.

Question Number 203

The following program is used to delete a file. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdio.h>

int main()
{
    int status;
    status = remove("Input.txt");
    if (status != 0)
        printf("File has been deleted successfully\n");
    else
    {
        printf("Unable to delete the file\n");
        perror("Error");
    }
    return 0;
}

int status;

status = remove("Input.txt");

if (status != 0)

No change needed, program will give the correct output.

Question Number 204

Which of the following are examples of derived data types?

structure

function

pointers

All of the above

Question Number 205

#include< stdio.h>
int main()
{
    int array[100], position, count, n;

    printf("Enter number of elements in array : \n");
    scanf("%d", &n);

    printf("Enter %d elements : \n", n);

    for (count = 0; count <  n; count++)
        scanf("%d", &array[count]);

    printf("Enter the location where you wish to delete element : \n");
    scanf("%d", &position);

    if (position >= n + 1)
        printf("Deletion not possible.\n");
    else
    {
        for (count = position - 1; count <  n - 1; count++)
            printf("Resultant array : ");

        for (count = 0; count <  n - 1; count++)
            printf("%d\n", array[count]);
    }

    return 0;
}

array[count++] = array[count];

array[count -1] = array[count + 1];

array[count] = array[count + 1];

No change needed, program will give the correct output.

Question Number 206

The following program is used to copy a file. Which of the following statement(s) given in the choices should be corrected to make the program compile, link and run and give the desired output?

#include < stdlib.h>

int main()
{
    char ch;
    FILE *source, *target;
    source = fopen("CopyFile.txt", "r");

    if (source == NULL)
    {
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    target = fopen("Destination.txt", "w");

    if (target == NULL)
    {
        fclose(source);
        printf("Press any key to exit...\n");
        exit(EXIT_FAILURE);
    }

    while ((ch = fopen(source)) != EOF)
        fputc(ch, target);

    printf("File copied successfully.\n");

    fclose(source);
    fclose(target);

    return 0;
}

source = fopen("CopyFile.txt", "r");

fclose(source);

while ((ch = fopen(source)) != EOF)

No change needed, program will give the correct output.

Question Number 207

The preprocessor provides the ability for which of the following options?

The inclusion of header files

The inclusion of macro expansions

Conditional compilation.

All of the above

Question Number 208

Give the output of the following code snippet :

void main()
{
    int n;
    scanf("%d",&n);
    printf("%d", n);
}
Assume input to n is 'c'

No output

Garbage value

Question Number 209

The following program is used to add two complex numbers by passing structure to a function. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

struct complex
{
    float real;
    float imag;
};
struct complex Add(struct complex n1, struct complex n2);
int main()
{
    struct complex n1, n2, temp;
    printf("For first complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n1.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n1.imag);
    printf("For second complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n2.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n2.imag);
    temp = Add(n1, n2);
    printf("Sum=%.1f+%.1fi", temp.real, temp.imag);
    return 0;
}
struct complex Add(struct complex n1, struct complex n2)
{
    struct complex temp;
    temp.imag = n1.imag + n2.imag;
    return(temp);
}

temp = n1.real + n2.real;

temp.real = n1.real + n2.real;

temp.real = n1 + n2;

No change needed, program will give the correct output.

Question Number 210

Give the output of the following code snippet :

int main()
{
    int i = 10, j = 20, k = 30;
    printf("%d %d ", i, j, k);
}

10 20 30

10 20

10 20 0

Compilation error

Question Number 211

#include < stdio.h>
#include < stdlib.h>


int main()
{
    return 0;
}

system("C:\\WINDOWS\\System32\\whoAmI ");

system("C:\\WINDOWS\\System32\\WhoAmI ");

system("C:\\WINDOWS\\System32\\whoami ");

No change needed, program will give the correct output.

Question Number 212

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(dest, str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
        count++;
    }
}

d[count] = '\0';

d[count] = count;

s[count] = '\0';

No change needed, program will give the correct output.

Question Number 213

The “else if” in conditional inclusion is written as?

#else if

#elseif

#elsif

#elif

Question Number 214

Give the output of the following code snippet :

void main()
{
    int b = 5 + 7 * 4 - 9 * (3-2);
    printf("%d", b);
}

Question Number 215

#include < stdio.h>
#include < stdlib.h>


int main()
{
    return 0;
}

system("C:\\WINDOWS\\System32\\user");

system("C:\\WINDOWS\\System32\\user_name ");

system("C:\\WINDOWS\\System32\\whoami ");

No change needed, program will give the correct output.

Question Number 216

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10];
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d",&num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        stud[i].studId = i + 1;
        printf("\nStudent ID %d\n", stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud.name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }
    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n", i + 1);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

scanf("%s", stud.name);

scanf("%d", &stud[i].marks);

struct student stud[10];

No change needed, program will give the correct output.

Question Number 217

The following program is used to find the substring in a string without using string function. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

int main()
{
    char str[100], sub[100];
    int position, length, count = 0;

    printf("Enter the position and length of substring\n");
    scanf("%d%d", &position, &length);

    while (count <  length)
    {
        sub[count] = str[position + count - 1];
        count++;
    }
    sub[count] = '\0';

    printf("Required substring is %s\n", sub);

    return 0;
}

printf("Input a string : \n"); scanf("%s",str);

printf("Input a string : \n"); scanf("%s",str[100]);

printf("Input a string : \n"); scanf("%c",str);

No change needed, program will give the correct output.

Question Number 218

struct complex
{
    float real;
    float imag;
};
struct complex Add(struct complex n1, struct complex n2);
int main()
{
    struct complex n1, n2, temp;
    printf("For first complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n1.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n1.imag);
    printf("For second complex number : \n");
    printf("Enter real part :\n");
    scanf("%f", &n2.real);
    printf("Enter imaginary part :\n");
    scanf("%f", &n2.imag);
    temp = Add(n1, n2);
    printf("Sum=%.1f+%.1fi", temp.real, temp.imag);
    return 0;
}
struct complex Add(struct complex n1, struct complex n2)
{
    struct complex temp;
    temp.real = n1.real + n2.real;
    temp.imag = n1.imag + n2.imag;
}

return(temp.real,temp.imag);

return(temp);

return(real,imag);

No change needed, program will give the correct output.

Question Number 219

Give the output of the following code snippet :

void main()
{
    int x=3.105,y=6.6678;
    double z=ceil((double)x)/floor((double)y);
    printf("%.2f",z);
}

0.00

0.50

0.25

Question Number 220

Give the output of the following code :

void main()
{
    int b = 6;
    int c = 7;
    int a = ++b + c--;
    printf("%d", a);
}

Runtime error

Question Number 221

The following program is used to print the IP address of the system. Which of the following statement(s) given in the choices should be added to make the program compile, link and run and give the desired output?

#include < stdio.h>
#include < stdlib.h>


int main()
{
    return 0;
}

system("C:\\WINDOWS\\System32\\ipaddress ");

system("C:\\WINDOWS\\System32\\ipconfig ");

system("C:\\WINDOWS\\System32\\ip_config ");

No change needed, program will give the correct output.

Question Number 222

In printf function in C, which is the format specifier used to print characters?

Question Number 223

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

else if (j < num2) { for (; i < num1 + num2;) { result[i] = arry2[k]; k++; } }

else if (j > num1) { for (; i < num1 + num2;) { result[i] = arry2[k]; i++; } }

else if (j == num1) { for (; i < num1 + num2;) { result[i] = arry2[k]; k++; i++; } }

No change needed, program will give the correct output.

Question Number 224

The %(modulo) operator cannot be applied for which data type?

int

double

float

Both 2 and 3

Question Number 225

#include< stdio.h>

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10],temp;
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d", &num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        printf("Enter student ID: ");
        scanf("%d", &stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud[i].name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }

    for (i = 0; i <  num; i++)
        for (int j = 0; j <  i; j++)
            if (student[i].studId <  student[j].studId)
            {
                temp = stud[i];
                stud[i] = stud[j];
                stud[j] = temp;
            }

    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n",stud[i].studId);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

if (student[i].studId < student[j].studId)

stud[i] = stud[j];

scanf("%d", &stud[i].marks);

No change needed, program will give the correct output.

Question Number 226

void bubble_sort(int arry[], int n);
int main()
{
    int array[100], n, c;

    printf("Enter number of elements\n");
    scanf("%d", &n);

    printf("Enter %d integers\n", n);

    for (c = 0; c <  n; c++)
        scanf("%d", &array[c]);

    bubble_sort(array, n);

    printf("Sorted array in ascending order:\n");

    for (c = 0; c <  n; c++)
        printf("%d\n", array[c]);

    return 0;
}

void bubble_sort(int arry[], int n)
{
    int c, d, temp;

    for (d = 0; d <  n - c - 1; d++)
    {
        if (arry[d] > arry[d + 1])
        {

            temp = arry[d];
            arry[d] = arry[d + 1];
            arry[d + 1] = temp;
        }
    }
}

for (c = 0; c < (n - 1); c++)

for (d = 0; d < n * c - 1; d--)

if (arry[d] < = arry[d + 1])

No change needed, program will give the correct output.

Question Number 227

Give the output of the following code snippet :

void func(int a)
{
    int a=200;
    printf("%d",a);
}
void main()
{
    func(10);
}

200

No output

Compilation error

Question Number 228

The following program is used to copy strings without using string function. Which of the following statement(s) given in the choices should be removed to make the program compile, link and run and give the desired output?

void copy_str(char[], char[]);

int main()
{
    char str[100], dest[100];

    printf("Input a string\n");
    scanf("%s",str);

    copy_str(dest, str);

    printf("Source string:      %s\n", str);
    printf("Destination string: %s\n", dest);

    return 0;
}

void copy_str(char d[], char s[])
{
    int count = 0;

    while (s[count] != '\0')
    {
        d[count] = s[count];
        d[count] = d[count-1];
        count++;
    }
    d[count] = '\0';
}

d[count] = s[count];

d[count] = d[count-1];

count++;

No change needed, program will give the correct output.

Question Number 229

Which of the following data types fall under the integral types classification in C?

float

long double

unsigned char

Both 2 and 3

Question Number 230

Give the output of the following code snippet :

void main()
{

    int x = 5 % 2 * 4 / 2;
    printf("%d", x);
}

No output

Question Number 231

Give the output of the following code snippet :

#if 0
int main()
{
    printf("Hello World");
    return 0;
}
#endif

Hello World

No output

Garbage value

Compiler error

Question Number 232

void MergeArrays (int[], int, int[], int, int[]);

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 / num2; i++)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

for (i = 0; i < num1 / num2; i++)

else if (j == num1)

if (arry1[j] < arry2[k])

No change needed, program will give the correct output.

Question Number 233

Name the library function used in C to get the input from the user through the console :

scanf ()

main()

printf()

None of the above .

Question Number 234

The macro va_start initializes the argument pointer to point to ?

First unnamed argument

First named argument.

Second named argument.

List of unnamed arguments

Question Number 235

What are the restrictions places on the names of variables and constants in C?

Should contain only letters and digits.

The first character should be a letter.

Keywords such as if, else, for etc. should not be used as variable names.

All of the above.

Question Number 236

Give the output of the following code snippet :

void main()
{
    int b = 5 - 4 + 2 * 5;
    printf("%d", b);
}

-5

Question Number 237

A long definition for the replacement text in macros can be continued for several lines using which operator?

Question Number 238

void MergeArrays ();

int main()
{
    int arry1[100], arry2[100], num1, num2, c, result[200];

    printf("Input number of elements in first array\n");
    scanf("%d", &num1);

    printf("Input %d integers\n", num1);
    for (c = 0; c <  num1; c++)
    {
        scanf("%d", &arry1[c]);
    }

    printf("Input number of elements in second array\n");
    scanf("%d", &num2);

    printf("Input %d integers\n", num2);
    for (c = 0; c <  num2; c++)
    {
        scanf("%d", &arry2[c]);
    }

    MergeArrays(arry1, num1, arry2, num2, result);

    printf("Result array:\n");

    for (c = 0; c <  num1 + num2; c++)
    {
        printf("%d\n", result[c]);
    }
    return 0;
}

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])
{
    int i, j, k;
    j = k = 0;

    for (i = 0; i <  num1 + num2;)
    {
        if (j <  num1 && k <  num2)
        {

            if (arry1[j] <  arry2[k])
            {
                result[i] = arry1[j];
                j++;
            }
            else
            {
                result[i] = arry2[k];
                k++;
            }
            i++;
        }

        else if (j == num1)
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry2[k];
                k++;
                i++;
            }
        }

        else
        {
            for (; i <  num1 + num2;)
            {
                result[i] = arry1[j];
                j++;
                i++;
            }
        }
    }
}

void MergeArrays ();

void MergeArrays (int arry1[], int num1, int arry2[], int num2, int result[])

MergeArrays(arry1, num1, arry2, num2, result);

No change needed, program will give the correct output.

Question Number 239

Give the output of the following code snippet :

#define MAX(x,y) (x)>(y)?(x):(y)

int main()
{

    int i=10,j=9,k=0;

    k=MAX(i++,++j);

    printf("%d %d %d",i,j,k);

    return 0;
}

10 10 10

10 11 11

11 10 11

11 11 11

Question Number 240

Binary operators * and / have what priority?

Same

* has greater priority than /

/ has greater priority than *

None of the above.

Question Number 241

Each call to the macro va_arg,

Returns one argument

Steps va_list variable to the next.

Both 1 and 2

None of the mentioned

Question Number 242

#include < stdio.h>

int main()
{
    int a, b, x, y, temp, gcd, lcm;

    printf("Enter two values : \n");
    scanf("%d%d", &x, &y);

    a = x;
    b = y;
    temp = b;

    while (b != 0)
    {
        b = a % b;
        a = temp;
    }

    gcd = a;
    lcm = (x*y) / gcd;

    printf("Greatest common divisor of %d and %d = %d\n", x, y, gcd);
    printf("Least common multiple of %d and %d = %d\n", x, y, lcm);

    return 0;
}

a = x;

b = y;

temp = b;

No change needed, program will give the correct output.

Question Number 243

The following program is used to generate the palindrome of a number. Which of the following statement(s) given in the choices should be reordered to make the program compile, link and run and give the desired output?

#include < stdio.h>
int main()
{
    int value,num, reverse = 0;

    printf("Enter a number to reverse : ");
    scanf("%d", &value);

    num = value;
    reverse = reverse * 10;

    while (num != 0)
    {
        reverse = reverse + num % 10;
        num = num / 10;
    }

    if (value == reverse)
        printf(" %d is a Palindrome",value);
    else
        printf(" %d is not a Palindrome", value);

    return 0;
}

num = value;

reverse = reverse * 10;

num = num / 10;

No change needed, program will give the correct output.

Question Number 244

The following program is used to swap two values. Which of the following statement(s) given in the choices should be added to the program at some point to make the program compile, link and run and give the desired output?

#include < stdio.h>
int main()
{
    int value1, value2, temp;

    printf("\nEnter the value of value1 : ");
    scanf("%d", &value1);
    printf("\nEnter the value of value2 : ");
    scanf("%d", &value2);

    printf("Before Swapping\nvalue1 = %d\nvalue2 = %d\n", value1, value2);

    value2 = temp;

    printf("After Swapping\nvalue1 = %d\nvalue2 = %d\n", value1, value2);

    return 0;
}

temp = value1 + value2; value1 = value2;

temp = value1; value1 = value2;

temp = value2; value1 = value2/2;

No change needed, program will give the correct output.

Question Number 245

Give the output of the following code snippet :

#define func(x, y) x + y - x
int main()
{
    int i = 3, j = 3;
    printf("%d\n",func(i*j, 2));
    return 0;
}

Compilation error

Question Number 246

In printf function in C, which is the format specifier used to print floating point values?

Question Number 247

#include< stdio.h>

int main()
{
    int value, i, flag = 0;
    printf("Enter a positive value: ");
    scanf("%d", &value);
    for (i = 2; i < = value / 2; ++i)
    {
        if (value % i == 0)
        {
            flag = 1;
        }
    }
    if (flag == 0)
        printf("%d is a prime number", value);
    else
        printf("%d is not a prime number", value);
    return 0;
}

break;

continue;

return 0;

No change needed, program will give the correct output.

Question Number 248

Give the output of the following code :


#define Message "Hello World"

int main()
{

    printf("%d\n",Message);
    return 0;
}

Hello World

Compiler error

No output

Garbage value

Question Number 249

struct student
{
    char name[50];
    int studId;
    int marks;
};

int main()
{
    struct student stud[10];
    int i, num;
    printf("Enter number of students : \n");
    scanf("%d",&num);
    printf("Enter information of students:\n");
    for (i = 0; i<  num; ++i)
    {
        stud[i].studId = i + 1;
        printf("\nStudent ID %d\n", stud[i].studId);
        printf("Enter name: ");
        scanf("%s", stud -> name);
        printf("Enter marks: ");
        scanf("%d", &stud[i].marks);
        printf("\n");
    }
    printf("Student Information :\n\n");
    for (i = 0; i<  num; ++i)
    {
        printf("\nStudent ID %d:\n", i + 1);
        printf("Name: %s", stud[i].name);
        printf("Marks: %d", stud[i].marks);
    }
    return 0;
}

stud[i].studId = i + 1;

scanf("%d", &stud[i].marks);

scanf("%s", stud -> name);

No change needed, program will give the correct output.

Question Number 250

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;

    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
    }

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

exit(EXIT_FAILURE);

break;

continue;

No change needed, program will give the correct output.

Question Number 251

#include < stdio.h>
int main()
{
    int value1, value2, temp;

    printf("\nEnter the value of value1 : ");
    scanf("%d", &value1);
    printf("\nEnter the value of value2 : ");
    scanf("%d", &value2);

    printf("Before Swapping\nvalue1 = %d\nvalue2 = %d\n", value1, value2);

    temp = value1;
    value1 = value2;

    printf("After Swapping\nvalue1 = %d\nvalue2 = %d\n", value1, value2);

    return 0;
}

value2 = temp;

value2 = temp /2;

value2 = value1 + value2;

No change needed, program will give the correct output.

Question Number 252

Give the output of the following code snippet :

#define max 10+2

int main()
{

    int i;

    i=max*max;

    printf("%d",i);

    return 0;
}

144

No output

Question Number 253

#include < stdio.h>
int main()
{
    int value,num, reverse = 0;

    printf("Enter a number to reverse : ");
    scanf("%d", &value);

    num = value;

    while (num != 0)
    {
        reverse = reverse * 10;
        num = num / 10;
    }
    reverse = reverse + num % 10;
    if (value == reverse)
        printf(" %d is a Palindrome",value);
    else
        printf(" %d is not a Palindrome", value);

    return 0;
}

reverse = reverse + num % 10;

reverse = reverse * 10;

num = num / 10;

No change needed, program will give the correct output.

Question Number 254

#include < stdlib.h>

int main()
{
    FILE *fs1, *fs2, *ft;
    char ch;
    if (fs1 == NULL || fs2 == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }


    fs1 = fopen("File1.txt", "r");
    fs2 = fopen("File2.txt", "r");

    ft = fopen("Final.txt", "w");

    if (ft == NULL)
    {
        perror("Error ");
        exit(EXIT_FAILURE);
    }

    while ((ch = fgetc(fs1)) != EOF)
        fputc(ch, ft);

    while ((ch = fgetc(fs2)) != EOF)
        fputc(ch, ft);

    printf("Two files have been merged successfully");

    fclose(fs1);
    fclose(fs2);
    fclose(ft);

    return 0;
}

fs1 = fopen("File1.txt", "r"); fs2 = fopen("File2.txt", "r");

while ((ch = fgetc(fs1)) != EOF) fputc(ch, ft);

while ((ch = fgetc(fs2)) != EOF) fputc(ch, ft);

No change needed, program will give the correct output.

Question Number 255

Give the output of the following code snippet :

#define Hello
int main()
{
#ifdef Hello
    printf("Hello\t");
#undef Hello
#endif
#ifdef Hello
    printf("World\t");
#endif
}

Hello

Hello World

World

Compilation error