Knowledge check.

- Choose one best answer from given 4 choices for each questions.
- Review before submit as you wont get a chance to review after submit.
- Max Time for quiz is 30 mins and Exam is 90 mins.
- Login is not required for an exam or a quiz.
- By submitting you formally acknowledge and accept terms and conditions mentioned here. Which of the following statements is not true about the fclose() function?

Writes any unwritten data from stream to buffer.

Returns 0 if an error occurs

Frees any automatically allocated buffer.

Both 1 and 2

Give the output of the following code snippet :

void main()
{
    static int x;
    if (x++ <  2)
    {
        printf("Ho " );
        main();
    }
}

Ho

Ho Ho

Infinite loop

Compiler error.

Give the output of the following code snippet :

void main()
{
    int i=3,x=10;
    i++;
    switch(i)
    {
case2:
        printf("%d ",x++);
        break;
case3:
        printf("%d ",x+2);
case4:
        printf("%d ",x+3);
    default:
        printf("Hello");
        break;
    }
}

13 Hello

12 13 Hello

Hello

Compilation error

Which of the following are basic types of variables in C :

int

char

float

All of the above.

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

Flushes any unwritten data from stream.

Discards any unread buffered input

Frees any automatically allocated buffer.

All of the above.

How many elements can the array arr[10][5] hold?

50

51

15

None of the above.

Platforms and software supported by Visual Studio are,

Windows.

Microsoft Office.

All of the above.

None of the above.

Versions of Visual Studio are,

2006.

2007.

2008

None of the above.

Show the correct order of execution for creating and executing a program in Visual Studio:

New Project Creation -> Create Program-> Run -> Compile-> Debug created application.

New Project Creation -> Create Program-> Compile -> Debug created application -> Run.

New Project Creation -> Create Program-> Compile -> Run/ Debug created application.

New Project Creation -> Create Program-> Debug created application -> Compile-> Run.

Give the output of the following code snippet :

void main()
{
    int i=5;

    do
        printf("Hello world");
    while(!i);


}

No output

Hello world

Compile time error

None of the above.

Give the output of the following code snippet :

int main()
{
    int n;
    for (n = 5; n!=0; n--)
        printf("%d ", n--);
    return 0;
}

5 4 3 2 1

5 4 3 2 1 0

No output

Infinite loop

Which of the following methodologies are used to control the flow of the program in C?

if()

if else()

switch()

All of the above.

Give the output of the following code snippet :

void main()
{
    int i=0;
    int sum=0;
    do
    {
        printf("%d",i);
        sum+=i;
        i++;
    }
    while(!i);
}

0

15

Infinite loop

Compilation error

Give the output of the following code snippet :

int main()
{
    char c;
    FILE *fp;
    fp=fopen("myfile.txt","w");

    while((c=fgetc(fp))!=EOF)
        printf("%c",c);
    fclose(fp);
    return 0;
}

Assume the contents of file 'myfile.txt' contains " Hello world".

No output

Hello world

Compiler error

None of the above

Which of the following is related to a Microsoft Development tool package.

SDK

VS

Both of the above

None of the above

Give the output of the following code snippet :

struct student
{
    int no;
};
void main()
{
    struct student s;
    no=10;
    printf("%d",no);
}

10

0

Garbage value

Compilation error

Give the output of the following code snippet :

void main()
{
    int x=0,z;
    float p=2.4567;
    float q=5.6543;
    float r=0.0;
    printf("%4.4f",p+q-r);
}

7.5856

8.1110

8.1233

7.785

Give the output of the following code snippet :

void main()
{
    int x;
    for(x=1; x< =3; x++);
    printf("%d",x);
}

1 2 3

Compile time error

No output

4

Which of the keywords denote the size and type of a variable in C :

include

sizeof

char

extern

Give the output of the following code snippet :

int func(int a)
{
    int b=10,i=0;
    while(a!=0)
    {
        int c=a+b;
        a--;
        b--;
        printf("%d ",c);
        break;
    }

    return 0;
}
int main()
{
    int x=5;
    func(x);
}

15

13

7

9

Give the output of the following code snippet :

int main()
{
    float a,b;
    int func(int,float);
    a=func(100,250.5);
    b=func(20,20.75);
    printf("%.2f %.2f",a,b);
}
int func(int a,float b)
{
    return ((float)a+b);
}

350 40

350.00 40.00

250.00 20.00

Compilation error

Give the output of the following code snippet :

void main()
{
    int a=13,b=20;
    if(!a==!b)
        printf("%d",++a);
    else
        printf("%d",--b);
}

13

14

0

1

Which of the following are true about variables in C:

In C, computer memory is accessed via variables.

Variables store values as 1's and 0's (binary) in memory

Variables in C are representation of computer memory.

All of the above.

Which of the following functions is used to rename a particular file?

renamefile()

rnamef()

rename()

rnamefile()

Which is the keyword used to create a structure in C?

structure

struct

array

enum

Give the output of the following code snippet :

struct p
{
    int k;
    char c;
};
int p = 10;
int main()
{
    struct p x;
    x.c = 'B';
    printf("%d %d\n", x.c, p);
}

Compilation error

Garbage value 10

66 10

96 10

External static declaration can be applied to functions as well. State true or false :

Always true.

Always false.

Sometimes true and sometimes false.

Not enough information to provide the right answer .

Versions of Visual Studio are,

2006.

2007.

2010.

None of the above.

Give the output of the following code snippet :

struct p
{
    int k;
    char c;

};
int main()
{
    struct p x[5];
    x[0].k=15;
    x[0].c='B';
    printf("%d %c\n", x[0].k,x[0].c);
}

15 B

15 0

15 66

Compiler error

Name the header file used to call the printf function in the main program.

< conio.h>

< string.h>

< stdio.h>

None of the above

Give the output of the following code snippet :

void main()
{
    char x=10;
    do
    {
        x+=10;
        printf("%d ",x);

    }
    while(x!=20);
}

10

20

0

Infinite loop

Give the output of the following code snippet :

int temp = 100;
switch(temp)
{
case 10 :
    printf("10");
    break;
case 10 :
    printf("10");
    break;
case 100 :
    printf("1000");
    break;
default :
    printf("default");
    break;
}

1000

default

Compile time error

None of the above.

A new C program can be executed without being compiled . True or False?

Always true

Always false

Sometimes true and sometimes false.

Not enough information to determine the correct answer.

In C, which of the following are the possible scope of a variable?

local

global

static

All of the above

Which of the keywords denote the size and type of a variable in C :

int

char

float

All of the above.

Which of the following are keywords in C:

do

while

for

All of the above

Give the output of the following code snippet :

void main()
{
    int x=0,y=1,z=2;
    if((x==y)&(z==x+2))
        printf("%d",z);
    else
        printf("%d",++x);
}

2

3

1

Compilation error

Which of the following steps are required to execute a C program in Visual Studio?

Create program

Compile

Debug

All of the above

Which of the following is an example of looping in C?

continue

if-else

while

All of the above.

Which of the keywords denote the size and type of a variable in C :

unsigned int

double

float

All of the above.

Give the output of the following code snippet :

struct Point
{
    int x;
    int y;
};

int main()
{
    struct Point p1 = {10};
    struct Point p2 = p1;
    printf("%d  %d", p2.x, p2.y);
    getchar();
}

10

10 0

10 Garbage value

Compilatio error

Give the output of the following code snippet :

int k()
{
    printf("Hello");
}
struct p
{
    int k();
    char c[10];

};
int main()
{
    struct p x;
    printf("%d",x.k());
}

Hello

No output

Garbage value

Compilation error

Give the output of the following code snippet :

void main()
{
    int a=13;
    if(a==12)
        a==12?a=0:a=1;
    else
        a--;
    printf("%d",a);
}

12

0

1

Compilation error

Give the output of the following code snippet :

void main()
{
    for (int i=0; i <  2; i++)
    {
        for (int j = 0; j <  2; j++)
        {
            printf("1 ");

        }
        printf("2 ");
        break;
    }
    printf("Out of loop");
}

1 2 1 2 Out of Loop

1 1 2 Out of Loop

1 1 1 2 Out of Loop

1 2 2 Out of Loop

Name the three main parts of a for loop in C :

Initialization

Condition

Iteration

All of the above.

Which is the function used to length of a string in C?

strlen

strcat

strcpy

None of the above

What does the fread() function return?

Number of characters read

File pointer

End of file.

Null

Free Edition of Visual Studio is,

Premier.

Professional.

Ultimate.

None of the above.

What is a binary stream in C?

Sequence of processed bytes.

Stream of 1's and 0's.

Sequence of unprocessed bytes.

None of the above

What is the green play button in the Visual studio does?

Execute the application.

Create the source code for the application.

Fix the compilation errors.

All of the above.

Give the output of the following code snippet :

register int x;
void main()
{

    printf("%d", x);
}

0

1

Compiler error

Garbage value.

What is integrated into Visual Studio?

A text editor.

Intellisense.

A debugger.

All of the above.

How can an array of strings be represented as?

2D or a multidimensional array.

Array of array of characters

Either 1 or 2.

None of the above.

Give the output of the following code snippet :

int main()
{
    int i;
    for(i=0; i< =6; i=1+2)
    {
        if(i <  3)
        {
            printf("Test1 ");
            continue;
        }
        else
        {
            printf("Test2");
            break;
        }
    }
    return 0;
}

Test1 Test1 Test 2

Test1 Test2

Test1 Test1 Test2 Test2

No output

The steps to start a New Wizard in Visual Studio 2010 is,

File > NewProject

File > NewSolution

File >NewWizard

None of the above.

Give the output of the following code :

void main()
{
    char new1[]= { 0 };
    strcpy(new1,"Jello");
    int n=strlen(Jello);
    printf("%d ",n);
}

5

6

Undeclared identifier error

No output

Give the output of the following code snippet :

void main()
{
    int a=12;
    --a;
    if(a)
    {
    }
    printf("%d",a);
}

12

11

10

Compilation error

Which of the following is not a logical operator in C ?

!

&&

||

&

Which keyword in C does not change the number of iterations which could have been executed by the condition?

break

return

continue

None of the above

Give the output of the following code snippet :

struct point
{
    int x;
    int y;
};
struct point2
{
    int x;
    int y;
};
void fun(struct point);
int main()
{
    struct point2 p1 = {1, 2};
    fun(p1);
}
void fun(struct point p)
{
    printf("%d\n", p.x);
}

1

0

No output

Compilation error

Give the output of the following code snippet :

int main()
{
    int i=0;
    if(i--)
    {
        printf("%d",i++);
    }
    else
        printf("%d",--i);
    main();
}

-1

1

Infinite loop

-2

Which of the following are keywords in C:

break

continue

default

All of the above

Give the output of the following code snippet :

void main()
{
    int i = 2;
    do
    {
        printf("Hi ");
    }
    while (i <  2)
    }

Hi

Hi Hi

Syntax error

None of the above

Give the output of the following code snippet :

void main()
{
    int a=10;
    a--;
    switch(a)
    {
    case 10 :
        printf("%d",a);
        break;
    case 9  :
        printf("%d ",a++);
        printf("%d ",a);
    }
}

10 9

9 10

10 10

Compilation error

What is the method used to pause an application at a particular point ?

Flag

Breakpoint

All of the above

None of the above

Give the output of the following code :

void main()
{
    int var = strcmp("Worlc","World");
    printf("%d", var);
}

0

-1

1

None of the above.

Give the output of the following code snippet :

void main()
{
    int i=0,j;
    for(i=-1,j=2; j< 5; j++)
    {
        if(j!=5)
            continue;
        else i++;
    }
    printf("%d",i);
}

0

1

-1

Compilation error

Which of the following are the user interfaces that help to debug a program with Visual Studio:

Solution Explorer

Bookmark window

Memory Window

None of the above.

Give the output of the following code snippet :

struct student
{
    int no;
}
void main()
{
    struct student s;
    s.no=10;
    printf("%d",no);
}

10

0

Garbage value

Compilation error

Wizard in Visual studio is normally a set of,

Dialogs.

Magics

Conversation

None of the above

Which of the following statements is true about the fopen function?

Returns a function pointer if file is successfully created.

Returns null if file creation was unsuccessful.

Takes name of file and the type of mode to open it in as arguments.

All of the above.

Give the output of the following code snippet :

void func(int a)
{
    int sum=0,x;
    while(a!=0)
    {
        x=a%100;
        sum+=(x+x+x);
        a=a/10;
    }
    printf("%d ",sum);
}
int main()
{
    func(1000);
    func(2222);
}

30 200

33 204

36 203

Compilation error

Among all the files that make up a source program, how many times can an external variable be defined?

Once

Twice

Infinite number of times

Specified number if times.

Visual Studio is NOT

.net framework

A linker.

A debugger.

All of the above.

The breakpoint pauses the execution

Before that given line of code.

Until that given line of code.

After that given line of code.

All of the above.

Give the output of the following code snippet :

int func(int a)
{
    int b=10;
    return a+++ ++b;
}
int main()
{
    int x=5;
    int z=func(func(func(func(5))));
    printf("%d",z);
}

45

47

49

51

Give the output of the following program :

void main()
{
    int a=5, b=10;
    if(a==5)&&if(b==10)
            printf("Values match");
}

Values match

No output

Syntax error

None of the above.

Give the output of the following code snippet :

int func()
{
    int i=10;
    if(i!=0)
        return 10;
    else
        return 20;
}
int main()
{
    int a=func();
    printf("%d",a);

}

10

20

0

Compilation error

Give the output of the following code snippet :

struct Point
{
    int x;
    int y;
};

int main()
{
    struct Point p1 = {10, 20};
    struct Point p2 = p1;
    printf("%d %d",sizeof(p1),sizeof(p2));
}

8 0

8 8

0 0

Compilation error

Give the output of the following code snippet :

void main( )
{
    float c;
    c = getchar( );
    printf( "\nYou entered: ");
    putchar( c );
}

Assume input as 2.45 :

2.45

0

2

Garbage value

Versions of Visual Studio are,

2005.

2010.

All of the above.

None of the above.

How many arguments are passed to the strcmp function for string manipulation in C?

1

2

3

None of the above.

Find the output of the following program :

int main()
{
    char str[] = "Hello\0\World";
    printf("%s\n", str);
    return 0;
}

Hello World

Hello

No output

Error

Which of the following statements is true about Strings in C :

It is a character array.

A string literal is a group of characters enclosed within double quotes.

The array of characters end with a 0(null).

All of the above.

Give the output of the following code snippet :

void func()
{
    int i=10;
    void func1()
    {
        int j=10;
        printf("%d",j);
    }
    func1();
    printf("%d",i);
}
int main()
{
    func();
}

10 0

0 10

10

Compilation error

The main function in a given program cannot be called recursively. State true or false :

Always true.

Always false.

Sometimes true and sometimes false.

Not enough information to provide the right answer .

Give the output of the following code snippet :

void main()
{
    int a=10;
    --a;
    switch(a--)
    {
    case 10 :
        printf("%d ",a);
        break;
    case 10*9/10  :
        printf("%d ",a++);
    case 11:
        printf("%d",a--);
        break;
    default:
        printf("Hello");
        break;
    }
}

10 10

10

8 9

9

Which of the following are constituents of a C program :

Keywords

Operators

Identifiers

All of the above

Give the output of the following code snippet :

int main()
{
    int a = 0, i = 0;
    for (i = 0; i <  5; i++)
    {

        continue;
        a++;
    }
    printf("%d",a);
}

5

4

No output

0

Which is NOT a Visual Studio edition.

Express.

Free.

Ultimate.

Professional.

In which header file is the EOF character defined in C?

conio.h

string.h

stdio.h

math.h

Which of the following are parts of a function in C:

Return type

Body of the function

Parameters

All of the above.

Give the output of the following code snippet :

void main()
{
    int a=10;
    switch(a--)
    {
    case 10 :
        printf("%d ",a);
    case 9  :
        printf("%d ",a++);
        printf("%d ",a);
    }
}

10 10 10

9 9 9

9 9 10

9 10 10

For a given C program, a function can be called :

Only once.

Any number of times.

Only a specified number of times.

None of the above.

Give the output of the following code snippet :

void main()
{
    int i = 0;
    for (i = 0; i <  5; i++)
        if (i <  4)
        {
            printf("Ho ");
            break;
        }
}

Ho Ho Ho Ho

Ho Ho Ho

Ho

No output

Visual Studio is NOT

An IDE

A linker.

A debugger.

More than one of the above.

Which of the following parts of a function are required when calling a function:

Return type

Function name

Parameters

Both 2 and 3

Give the output of the following code snippet :

void main()
{
    int i=0;
    do
    {
        i=i+3;
        printf("%d",i);
    }
    while(1);
}

0

3

Infinite loop

Compilation error

Give the output of the following code snippet :

struct student
{
    int id;
};
void main()
{
    struct student s[10];
    s.id[0] = 10;
    printf("%d", s.id[0]);
}

10

0

Compilation error

No output

Give the output of the following code snippet :

void main()
{
    struct employee
    {
        int id;
    };
    struct employee emp1= {20};
    printf("%d\t",emp1.id);
}

0

20

Compilation error

Garbage value

Property of external variable to be accessed by any source file is called as

external linkage

external scope

global scope

global linkage

Which of the following statements is true :

strcmp(s1,s2) returns a value less than 0 if s1 is smaller than s2.

strcmp(s1,s2) returns a value greater than 0 if s1 is greater than s2.

strcmp(s1,s2) returns a value equal to 0 if s1==s2.

strcmp(s1,s2) returns a value equal to 1 if s1==s2.

Give the output of the following code snippet :

int func(int a*b)
{
    int i=10;
    if(i< =0)
        return a+10;
}
int main()
{
    float a=func(10*5+5);
    printf("%.2f",a);

}

10

20

0

Compilation error

Which of the following is used to represent comments in C:

//

/**/

||

Both 1 and 2

Which of the following operators performs the same function of the logical AND operator?

=

==

&&

All of the above.

The steps to start a New Wizard in Visual Studio 2010 is,

File > NewProject

Options > NewSolution

Options >NewWizard

None of the above.

Given the following code snippet, find the output of the program :

void main()
{
    int a=5;

    switch(5)
    {
    case 1:
        printf("Value is 5");
        break;
    case 5:
        printf("Value is 1");
        break;
    }
}

Value is 5

Value is 1

No output

None of the above.

What is the number of values allowed for the character data type in C :

65,535

255

32767

None of the above.

Which of the following are the user interfaces that help to debug a program with Visual Studio:

Call Stack Window

F9 to breakpoint

Disassembly Window

All of the above.

Give the output of the following code snippet:

struct p
{
    char c;
    float f;
};

int main()
{
    struct p x = {1,97,3};
    printf("%f \n", x.f);
}

3.0

97.0

Compiler error

No output.

Give the output of the following code snippet :

int main()
{
    struct student
    {
        char name[25];
        int age;
    };
    struct student e;
    strcpy(e.name,"Jenn");
    e.age = 25;
    printf("%s %d\n", e.name, e.age);
    return 0;
}

Jenn 25

Compilation error

Garbage value 25

No output

In which of the following ways can a structure variable be created?

struct strut { int a1; char b2;}; void main() { strut s1,s2;}

struct strut { int a1; char b2;}; void main() { strut s1[5],s2;}

struct strut { int a1; char b2;}s1,s2;

All of the above.

In which header file is the integer expression errno declared?

error.h

errnum.h

errno.h

errornum.h

Which of the following is NOT related to a Microsoft Development tool package?

Debugging tools for windows

Driver Development Kit

Software Development Kit

None of the above

Which of the following can be called between a read and a write operation in a file?

fflush()

Any file positioning function

Creation of new file, fopen().

Both 1 and 2

Give the output of the following code snippet :

void demo();
int main()
{
    demo();
    return 0;
}

void demo()
{
    printf("Hello ");

}

Hello

Compiler error.

Runtime error.

No output.

Visual Studio is NOT

IDE.

Text Editor.

Code Editor.

None of the above.

Give the output of the following code snippet :

void func()
{
    int j=20;
    printf("%d",j);
}
void func()
{
    int i=10;
    printf("%d",i);
}
int main()
{
    func();
    func();
}

10 20

20 10

10

Compilation error

Which of the keywords denote the scope of a variable in C :

main

include

extern

case

What is the value of the argument given to the character testing functions defined in ctype.h?

EOF

Unsigned char

Float

Both 1 and 2

Give the output of the following code snippet :

void main()
{

    int a;
    for(a=0; a< 5; a++)
    {
        if(a==2)
            break;
        printf("Hello world");
    }

}

No output

Hello world

Hello world Hello world

None of the above

Give the output of the following code snippet :

struct test
{
    int k;
    char c;
    float f;
};
int main()
{
    struct test var = {5,80,2.0};
    printf("%c\n", var.c);
}

80

P

Q

Compilation error

Which of the keywords denote the scope of a variable in C :

break

auto

enum

continue

Give the output of the following code snippet :

struct p
{
    int k;
    char c;

};
int main()
{
    struct p x[5];
    x[0].k=10;
    x[0].c='a';
    printf("%d %d\n", x.k,x.c);
}

10 a

10 0

10 97

Compiler error

Give the output of the following code snippet :

void main()
{
    int a=12,i=0;
    --a;
    i++;
    do
    {
        printf("%d",a);
        ++i;
    }
    while(--i);

}

1

12

Infinite loop

No output

Give the output of the following code :

int main()
{
    int i=1;
    if(!i)
        printf("Hello,");
    else
    {
        i=0;
        printf("Jello");
        main();
    }
    return 0;
}

Prints "Hello" for infinite times.

Prints "Jello" for infinite times.

No output.

Compiler error.

Give the output of the following code snippet :

void main()
{
    int x=0,y=1,z=2;
    for(;;)
        printf("%d",x+y+z);
}

3

0

Infinite loop

Compilation error

The last element of the array arr[10] is accessed by :

arr[11]

arr[10]

arr[9]

None of the above

What is the range of the values allowed for the data type unsigned char in C:

–32,768 to 32,767

0 to 255

–128 to 127

None of the above

Give the output of the following code snippet :

void main()
{
    int a=10;
    a--;
    switch(a)
    {
    case 10 :
        printf("%d",a);
        break;
    case 9  :
        printf("%d",a++);
        break;
        printf("%d",a);
    }
}

10

11

9

Compilation error

The keyword 'break' cannot be used within :

for

do-while

if-else

while

Give the output of the following code snippet :

int i=10;
int func(int x)
{
    i++;
    return ++i;

}
int func2(int y)
{
    --i;
    return --i;
}
void main()
{
    int a=func(i);
    int b=func2(i);
    printf("%d",a+b);
}

22

21

23

24

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

It removes a named file permanently.

Any attempts to open the file results in an error

Returns 0 if an attempt to open the removed file fails.

Both 1 and 2

Which of the following statements is true by the Call by value method?

The original value of the arguments are changed by the calling function.

Only a copy of the values are sent as parameters to the calling function.

Either 1 or 2

None of the above.

Give the output of the following code snippet : Assume the input as 100

void main()
{
    int x=0,z;
    z=printf("%d ",scanf("%d ",&x));
    printf("%2d",z);
}

1 100

2 100

1 2

Compilation error

Which mode is used to denote opening the binary file for update where the writing is done at the end?

w+b

r+b

a+b

wb

Which of the following is a ways can be used to represent an array of Strings in C?

char str1[rows][columns];

char str1(rows)(columns);

char str1(rows,columns);

None of the above

Which is the function used to copy a particular string into an array in C?

strlen

strcat

strcpy

None of the above

What are the two ways in which the arguments can be passed to a function?

By value.

By reference.

Either 1 or 2

None of the above.

Which of the following are not features of Debugging with Visual Studio :

Solution Explorer.

F9 to breakpoint

Memory Window

None of the above.

Which of the following are the user interfaces that help to debug a program with Visual Studio:

Watch Window which shows variable values.

F9 to breakpoint

Memory Window

All of the above.

Consider the given C code:

main()
{
    int val=30;
    float val1=3.15;
    printf("Welcome to the test");
}

Identify the literals in the program

30

3.15

Welcome to the test

All of the above

Give the output of the following code snippet :

void main()
{
    char new1[]="Hi";
    for(int i=0; i< 3; i++)
    {
        printf("%d  ",new1[i]);
    }
}

No output

Compiler error

72 105

72 105 0

Give the output of the following code snippet :

int func2()
{
    int j=100;
    return ++j;
}
void func()
{
    int i=10;
    int j=func2();
    printf("%d",i+j);
}
int main()
{
    func();
}

100

101

111

Compilation error

Following is a challenge with Visual studio for a beginner,

Very Huge number of functionality.

Price.

Abstrasts in internals from the user.

All of the above.

Give the output of the following code snippet :

void func()
{
    int i=1;
    while(!i)
    {
        func();
    }
    printf("%d",i++);
}
void main()
{
    func();
}

0

1

-1

Runtime error

How many arguments does the fclose() function take?

1

2

0

None of the above.

Identify the general syntax of the conditional operator in C :

(condition)? expression 1 : expression 2;

(condition)> expression 1 : expression 2;

(condition)^ expression 1 : expression 2;

None of the above

Development tools are normally NOT used for,

Writing code.

Handle huge code base.

Leverage Developer Effort.

None of the above.

Which of the keywords denote the size and type of a variable in C :

auto

static

signed char

All of the above.

Give the output of the following code snippet :

void main()
{
    int i=0;
    for(;; i++)
    {
        i=i+3;
        if(i==12)
            continue;
        else
            break;
    }
    printf("%d",i);
}

0

3

12

Compilation error

Give the output of the following code snippet :

struct p
{
    int k;
    char c;

};
int main()
{
    struct p x = {10,1};
    x.k=5;
    printf("%d %d\n", x.k,x.c);
}

10 1

5 1

10 5

Compilation error

Give the output of the following code snippet :

int func()
{
    int i=10;
    if(i!=0)
        return 10.50;
    else
        return 20.75;
}
int main()
{
    float a=func();
    printf("%.2f",a);

}

10.50

10.00

20.00

20.75

What are the arguments passed to the fwrite() function?

Buffer, Size in bytes ,Number of items to read, File pointer.

Buffer, Size in bytes , File pointer.

Buffer, Number of items to read, File pointer.

File pointer

Give the output of the following code snippet :

int func(int a,int b)
{
    int z=a >= b?return ((a= a/b): (a=20%10)) ;
}
int main()
{
    int a,b;
    a=func(100,250);
    b=func(20,20);
    printf("%d %d",a,b);
}

200 100

100 20

250 20

Compilation error

Give the output of the following code snippet :

int main()
{
    int a = 10, b;
    a >=5 ? b=100: b=200;
    printf("%d\n", b);
    return 0;
}

200

100

No output

None of the above

Development tools are normally NOT used for,

Web browsing

Writing email

Photo editing

Any of the above

Give the output of the following code snippet :

struct point
{
    int x;
    int y;
};
struct point2
{
    int x;
    int y;
};
int main()
{
    struct point p = {1};
    struct point2 p1 = p;
    printf("%d\n", p1.x);
}

1

0

Garbage value

Compilation error

Which of the following characters are printed by the ispunct() function defined in ctype.h?

space

letter

digit

newline

Give the output of the following code snippet :

void func(int a)
{
    int sum=0,x;
    while(a!=0)
    {
        x=a%10;
        sum+=(x*x);
        a=a/10;
    }
    printf("%d ",sum);
}
int main()
{
    func(100);
    func(200);
}

1 2

2 2

4 4

1 4

Platforms and software supported by Visual Studio are,

.Net.

Microsoft Office.

All of the above.

None of the above.

Give the output of the following code snippet :

void main()
{
    int i=0;
    do
    {
        printf("%d",i);
        i++;
    }
    while(i);
}

0

1

Infinite loop

Compilation error

How many arguments does the getchar() function take?

1

2

3

0

Which is the header file used to help manipulate strings in C?

stdio.h

math.h

string.h

None of the above.

Which of the following is the default method to pass arguments in C?

Call by value

Call by reference.

Both 1 and 2

None of the above.

Which of the following is an example of loop in C?

do-while

if-else

return

None of the above.

In C, a function can be called from :

Inside the main function

Outside the main function

Either 1 or 2

None of the above.

What is Visual Studio?

A photo editor.

A C Compiler.

A movie editor.

None of the above.

Which of the following gives the memory address of the first element in array arr, an array with 10 elements?

arr[0];

arr;

arr[1];

None of the above

What are the two arguments that are passed to the strcpy function for string manipulation in C?

strcpy(arrayname, "string");

strcpy("String",arrayname);

strcpy(string,arrayname);

None of the above.

Consider the following code snippet and give the output of the program :

main()
{
    int  a=12;
    if(a==12);
    printf("Input 1");
    else
        printf("Input other");
}

Input 1

Input other

Syntax error

None of the above.

Which of the keywords denote the scope of a variable in C :

break

float

static

case

Give the output of the following code :

void fun (int)
{
    printf("Hello");

}
void main()
{
    fun();
}

Hello

Compiler error

No output

None of the above

Which of the following functions is used to set the file position for the stream?

ftell()

fseek()

rewind()

fgetpos()

Which keyword can be used for exiting recursion?

break

return

exit

None of the above.

Give the output of the following code snippet :

void main()
{
    float x=0.3;
    float y=0.3;
    if(x==y)
        printf("%f",x+y);
    else
        printf("%f",x-y);
}

0.000000

0.600000

No output

Compilation error

Give the output of the following code snippet :

void Test();
void main()
{
    int k = Test();
    printf("%d", k);
}
void Test()
{
    printf("Hello ");
}

Hello 0

Hello

Hello garbage value

Compiler error.

Which mode is used to denote opening the text file for update but discards any previous contents if any?

w+

r+

a+

w

Give the output of the following code snippet :

struct p
{
    int mark1,mark2;
};

int main()
{
    struct p x = {50,50,50};
    printf("%d %d\n",x.mark1,x.mark2);
}

50 50

Compilation error

Runtime error

0 0

Debugging allows you to :

Create a new program.

Compile a program.

Reverse engineer a program that does not have the source code.

All of the above.

Give the output of the following code snippet :

struct
{
    int no;
}
void main()
{
    struct s;
    s.no=10;
    printf("%d",no);
}

10

0

Garbage value

Compilation error

Development tools are normally NOT used for,

Writing email

Testing

Debugging

None of the above

Which of the following statements is true about an escape sequence in C?

Used to represent hard-to-type invisible characters.

An escape sequence starts with backslash '\'

The escape sequence to represent a new line character is \n

All of the above.

Visual studio supports

Perl

Sun Java

None of the above.

All of the above.

Give the output of the following code snippet :

int main()
{
    int i;
    for (i = 1; i !=6; i += 2)
        printf("Ho ");
    return 0;
}

Ho Ho Ho

Ho Ho

Infinite loop

None of the above.

Give the output of the following code snippet :

struct p
{
    int k;
    char c;

};
int main()
{
    struct p x[5];
    x[0].k=10;
    x[0].c='B';
    printf("%d %c\n", x[1].k,x[1].c);
}

0 0

10 B

Garbage value

No output

Give the output of the following code snippet :

int main()
{
    for(int i=0; i< =4; i++)
    {
        printf("%d ",i);
    }

    return 0;
}

No output

0 1 2 3

0 1 2 3 4

Syntax error

Which of the following statements is true about UNICODE?

It can hold more values.

It is a 16 bit scheme

It is the modern way of representing strings.

All of the above.

Give the output of the following code snippet :

void main()
{
    static double x;
    int x;
    printf("x is %d", x);
}

0

0.00000

No output

Compiler error.

Give the output of the following code snippet :

void main()
{
    int i;
    for(i=0; i< =4; i++)
    {
        printf("%d",i);
        break;
        printf(" Test1");
    }
    printf(" Test2");
}

0 1 2 3 4 Test2

0 Test1 Test2

0 Test2

None of the above.

Give the output of the following code snippet :

void main()
{
    int i=0;
    do
    {
        i=i+3;
        i++;
        printf("%d",i);
    }
    while();
}

4

0

3

Compilation error

Visual Studio has

Intellisense

Wizard

All of the above

None of the above

Which of the keywords denote the size and type of a variable in C :

char

unsigned int

double

All of the above.

Which mode is used to denote opening the binary file for writing, where the writing is done at the end?

w+b

ab

a+b

wb

Consider the given code snippet in C. What is the output of the program?

int a1=10;
void main()
{


    printf("%d",a1);
    printf("      %d",b1);


}

int b1=12;

10 12

10 0

Undeclared identifier error

None of the above.

Give the output of the following code snippet :

void main()
{
    char new1 ='c';
    if(( new1 =='C') || (new1 =='c'))

        printf("Same");
    else
        printf("Not Same");

}

Not Same

Same

Either 1 or 2

None of the above.

Consider the given code snippet :

int main()
{
    int i = 0;
    while (i <  3)
        i++;
    printf("In while loop\n");
}

How many times is the value of 'i' checked in the condition i <  3?

2

3

4

5

Give the output of the following code snippet :

int func(int a)
{
    int b=0,i=0;
    a=b;
    while(a!=0)
    {
        a--;
        b--;
        func(b);
    }
    printf("%d %d",a,b);
    return 0;
}
int main()
{
    int x=5;
    func(x);
}

1 1

0 0

No output

Runtime error

Give the output of the following code :

void main()
{
    int var = strcmp("Hello","World");
    printf("%d", var);
}

0

-1

1

None of the above.

Automatic variables are variables that are

Declared within the scope of a block.

Declared outside all functions

Declared with keyword extern.

All of the above.

What is the return type of the character testing functions defined in ctype.h?

char

int

float

void

Give the output of the following code snippet :

int func(int a,int b)
{
    int i=100;
    if(i++< =100)
        return 20;
    else
        return 30;
}
int main()
{
    int z=func(100,200);
    printf("%d  ",z);
    printf("%p",main);
}

20 Address of main

30 Address of main

30 0

Compilation error

Give the output of the following code :

struct p
{
    int k;
    char c;

};
int main()
{
    struct p x = {0,1};
    x.k=10;
    printf("%d %d\n", x.k,x.c);
}

0 1

10 1

Compiler error

No output

Give the output of the following code snippet :

union student
{
    int no;
    float no1;
    double no2;
};
void main()
{
    union student s;
    s.no=1001;
    printf("%d",sizeof(s));
}

0

4

8

16

The arguments to a function in C are enclosed within

Curly braces {}

Parentheses ()

Square brackets []

None of the above

Visual studio supports

C

Perl

Sun Java

All of the above.

Give the output of the following code snippet :

void main()
{
    int a=1;
    if(!a)
        printf("Value is not 1");
    else
        printf("Value is 1");
}

Value is not 1

Value is 1

No output

None of the above

How many arguments are passed to the strcpy function for string manipulation in C?

1

2

3

None of the above.

Which of the keywords denote the size and type of a variable in C :

unsigned int

float

char

All of the above.

Give the output of the following code snippet :

void main()
{
    int x=0,z;
    float p=2.4567;
    float q=5.6543;
    float r=0.0;
    printf("%.2f",p+q-r);
}

7.58

8.11

8.1233

7.785

What does the fclose() function take as the argument?

File name

File size

File pointer

All of the above.

What is the unsigned integral produced by the sizeof operator?

size

size_t

size_r

size_w

Consider the given code snippet in C. In which functions can the variable b1 be accessed?

void hello();
int a1=10;
void main()
{


    printf("%d",a1);

    hello();

}

int b1=12;
void hello()
{
    printf("%d",b1);
}

main()

hello()

Either 1 or 2

None of the above

Give the output of the following code snippet :

void main()
{
    int a=10;
    switch(a)
    {
    case 10 :
        printf("%d",a);
        continue;
    case a:
        printf("%d",a++);
        break;
        printf("%d",a);
    }
}

10 11

10

11

Compilation error

Platforms and software supported by Visual Studio are,

Open Source.

GNU compiler collection.

Linux.

None of the above.

Which of the following are constituents of a C program :

Keywords

Tokens and aliases

Comments

All of the above

Which mode is used to denote opening the text file for update?

w+

r+

a+

b+

In the while loop, how many times is the loop executed if the condition is false?

0

1

10

None of the above.

Which of the keywords denote the size and type of a variable in C :

register

unsigned char

static

case

Which of the following statements is true about a minimal function in C?

Does not perform any function.

Returns an integer value.

It is useful as a place holder in program development.

Both 1 and 3

Which is the function used to concatenate two strings in C?

strlen

strcat

strcpy

None of the above

Give the output of the following code snippet :

void main()
{
    char arr[11]="The African";
    printf("%s",arr);

}

The African

No output

Array bounds overflow error.

None of the above

Identify the type of error in the given code :

void main()
{
    printf("Hello world");
    printf(Test);
}

Missing double quotes (" ")

Undeclared identifier ( Test)

Syntax error

None of the above.

Which of the following is a valid string definition?

char arr[]="TestString";

int arr[10]="TestString";

String arr="TestString";

All of the above

What are the types of functions that can be used in C?

Built in functions.

User defined functions

Library functions.

All of the above.

Give the output of the following code snippet :

void main()
{

    printf("Welcome");
    goto L2 ;

L1:

    printf("Loop 1");

L2:

    printf("Loop2");

    goto L1;
}

Welcome Loop2 Loop1

Welcome Loop1 Loop2

Infinite loop

None of the above

Which of the following modes is the temporary file opened in?

wb+

rb+

ab+

wb

Give the output of the following code snippet :

void main()
{

    int a=50;
    if(a>10)
        printf("First");
    else if(a>20)
        printf("Second");
    else if(a>30)
        printf("Third");

}

First

FirstSecond

FirstSecondThird

None of the above

Which is the function key in VS is associated with stepping out of the function while debugging?

Shift + F10

Shift + F5

Shift + F11

None of the above.

Which of the following is a valid syntax for the function freopen()?

char *freopen(const char *filename ,const char *mode ,FILE *stream);

void freopen(const char *filename ,const char *mode ,FILE *stream);

FILE *freopen(const char *filename ,const char *mode ,FILE *stream);

int *freopen(const char *filename ,const char *mode ,FILE *stream);

Boiler Plate code is auto-generated in Visual Studio by,

Compiler.

Intellisense

Both of the above

None of the above.

Give the output of the following code snippet :

int func(int,float);
int main()
{
    float a,b;
    a=func(100,250.5);
    b=func(20,20.75);
    printf("%.2f %.2f",a,b);
}
int func(int a,float b)
{
    return ((float)a+b);
}

350 40

350.00 40.00

250.00 20.00

Compilation error

Which library function in C is used to print a single character every time it is called?

getchar()

putchar()

printf()

scanf()

Give the output of the following code snippet :

int main()
{
    int i = 0;
    do
    {
        i++;
        printf("Ho ");
    }
    while (i <  3);
}

Ho Ho Ho

Ho Ho

Compile time error

None of the above.

The default statement in a switch case statement is optional and can be skipped. State true or false:

Always true

Always false

Sometimes true and sometimes false

Not enough information to provide an accurate answer.

Versions of Visual Studio are,

2006.

2007.

2009

None of the above.

Give the output of the following code snippet :

void main()
{
    struct employee
    {
        int id=10;
    };
    struct employee emp1= {20};
    printf("%d\t",emp1.id);
}

10

20

0

Compilation error

Give the output of the following code snippet :

int main()
{
    int i,j,k;
    for(i=0,j=2,k=1; i< =4; i++)
    {
        printf("%d ",i+j+k);
    }
    return 0;
}

Compiler error

3 4 5 6

3 4 5 6 7

None of the above.

Give the output of the following code snippet :

void main()
{
    int i;
    for(i=0; i< =6; i=1+2)
    {
        if(i <  3)
        {
            continue;
            printf("Test1 ");
        }
        else
        {

            break;
            printf("Test2");
        }
    }

}

Test1 Test1 Test 2

Test1 Test2

Test1 Test1 Test2 Test2

No output

Give the syntax for an if-else/if-else if statement :

if( cond){action} else {action}

if (cond){action} else if (cond) {action} else {action}

Both 1 and 2

None of the above.

Which of the keywords denote the size and type of a variable in C :

continue

extern

static

long int

Give the output of the following code snippet :

void main()
{
    int a=13,b=20;
    if(!a!=b)
        printf("%d",++a);
    else
        printf("%d",--b);
}

13

14

0

1

Give the output of the following code snippet :

int main()
{
    int i;
    for (i = 1; i != 5; i += 2)
        printf("Ho ");
    return 0;
}

Ho Ho Ho

Ho Ho

Infinite loop

None of the above.

Give the output of the following code snippet :

void main()
{
    int i=0;
    int sum=0;
    do
    {
        printf("%d",i);
        sum+=i;
    }
    while(i=1);
}

0

15

Infinite loop

Compilation error

Consider the given example of a function declaration in C. State which of the following is valid.

int add< int a,intb>

int add(int ,int);

int add(int b,intc);

Either 2 or 3

Give the output of the following code snippet :

struct p
{
    int k;
    char c[10];
    float f;
};
int p = 10;
int main()
{
    struct p x = {1,"Hello"};
    printf("%s %d\n", x.c, p);
}

Hello

Hello 10

No output

0 10

Visual Studio has

Build

Worker

All of the above

None of the above

Which mode is used to denote opening the binary file for update but discards any previous contents if any?

w+b

r+b

w+

wb

What is the return-type of the function sqrt() in C?

int

float

double

Depends on the data type of the parameter.

Give the output of the following code snippet : Assume the contents of the file 'Test.txt' is "Hello World".

void main()
{
    char x;
    FILE *fp;
    fp=fopen("Test.txt","r");
    while((x=getc(fp))!=EOF)
        printf("%c",x);
    printf("%d",EOF);
    fclose(fp);
}

Hello World 0

Hello 0

Hello World -1

Compilation error

Give the output of the following code snippet :

void main()
{
    struct temp
    {
        int a;
        char b;
        struct temp1
        {
            char c;
        } p;
    };
    struct temp t1 = {10,'A','e'};

    printf("%d %c %c ",p.a,p.b,p.c);
}

10 A Garbage Value

10 A e

Compilation error

No output

Give the output of the following code snippet :

int main()
{
    int i;
    int arr[3] = {0};
    for (i = 0; i < = 3; i++)
        printf("%d ", arr[i]);
    return 0;
}

Compiler Error

0 0 0 0

0 0 0 Garbage value

None of the above

Which of the following are file positioning functions in C?

fseek()

fsetpos()

getpos()

Both 1 and 2

Which of the following is a valid initialization of a multidimensional array?

int arr[5][5]={0};

int arr[5][5]={{0}};

int arr[5][5]=((0));

None of the above.

Give the output of the following code snippet :

int main()
{
    int i=0;
    for(i=0; i< 5; i++)
    {
        if(i==3)
            return 0;
        printf("Ho");
    }
    printf("Hello world");

}

Hello world.

HoHoHo Hello world

HoHoHo

None of the above.