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. Give the output of the following code snippet :

int main()
{
    register static int i = 10;
    i = 11;
    printf("%d\n", i);
}

10

11

0

Compile time error.

Which of the following is true for static variable?

Cannot be applied to internal variables.

It exists even after the function ends instead of losing scope.

External static declaration can be used only for variables.

All of the above.

Which of the following are constituents of a C program :

Keywords

Literals

Identifiers

All of the above

What is Integrated into Visual Studio?

A compiler.

A linker.

A resource compiler.

All of the above.

Give the output of the following code snippet :

void main()
{
    int a=300,b=20,c=50;
    if(a % b == c % 2)
        a=10;
    else
        c=40;
    a=50;
    printf("%d %d %d",a,b,c);
}

50 20 40

300 20 40

50 20 50

300 20 50

Give the output of the following code snippet : Assume the input given in 100.

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

1 100

2 100

1 2

Compilation error

Give the output of the following code snippet :

void main( )
{
    printf("Hello,
           World ");
}

Hello

Hello World

Compiler error

No output.

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.

Which of the following modes is used to indicate full buffering in the setvbuf() function?

IOFBF

_IOFBF

_IOBLF

IOLBF

Which of the following functions flushes all the output streams?

fflush(FILE *stream)

fwrite(FILE *stream)

fflush(NULL)

None of the above.

If two strings are identical, then what does the strcmp() function return?

-1

0

1

None of the above.

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

Give the output of the following code snippet :

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

12

0

1

Compilation error

When is the condition statement in a for loop checked in C?

After the loop gets executed.

Before the loop gets executed.

Either 1 or 2

None of the above.

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 :

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

Name the feature used in Visual Studio to help debugging.

Breakpoints

Task List.

All of the above

None of the above

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

wb+

rb+

ab+

wb

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

w+

r+

a+

b+

Versions of Visual Studio are,

2006.

2007.

2010.

None of the above.

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 snippet :

int main()
{
    int i=0;
    while(!i++)
    {
        printf("%d",i--+ ++i);
        return 0;
        main();
    }
}

0

3

4

Runtime error

Which of the following functions control the buffering of the stream?

ctrlbuf()

setbuff()

setvbuf()

setbuffer()

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.

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

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.

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 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 :

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

Give the output of the following code snippet :

void main()
{
    char new1[]= { 0 };
    strcpy(new1,"Jello");
    char new2[]= { 0 };
    strcpy(new2,"Yellow");
    char new3[]= { 0 };
    strcat(new3,new1);
    strcat(new3,new2);
    printf (new3);
}

YellowJello

JelloYellow

Yellow

Jello

Give the output of the following code snippet :

void main()
{
    int x=25,y=1;
    do
    {
        if(x>5)
            printf(" One");
        else if(x>10)
            printf(" Two");
        else
            printf(" Three");
    }
    while(y--);
}

One Two

One

Two

One One

Which of the following statements is true about structures in C?

It is a collection of same data types.

It is a collection of different data types.

They are similar to arrays.

Both 2 and 3.

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

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

File name

File size

File pointer

All of the above.

Give the output of the following code snippet :

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

20

30

0

Compilation error

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()
{
    int x=0,y=0,z=2;
    x+y+z>0?x=10:y=20;
    if(x&&y)
        printf("%d",10*x);
    else
        printf("%d",20*y);
}

100

200

400

0

Give the output of the following code snippet :

void countFun ( int count )
{

    if ( count < = 5 )
    {
        printf(" %d ", count);
        countFun( count + 1 );
    }
}
int main()
{
    countFun ( 2 );
}

1 2 3 4

2 3 4 5

2 3 4

No output

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 :

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

0

-1

1

None of the above.

Which of the following statements are used to alter the flow of control in a C program :

if-else

switch case

goto

All of the above.

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 :

int main()
{
    int i;
    int arr[4] = {1};
    for (i = 0; i <  4; i++)
        printf("%d ", arr[i]);
    return 0;
}

1 Garbage value Garbage value Garbage value

1 0 0 0

1 1 1 1

0 0 0 0

Name the looping statements available in C :

for

if else

switch case

All of the above

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

If buf is NULL, it will be used as the buffer.

It controls the buffering for the stream.

It should be called before reading, writing or any operation.

All of the above.

Which function causes the buffered but unwritten data to be written to the file on an output stream C?

fflush(FILE *stream)

fwrite(FILE *stream)

fflush(NULL)

None of the above.

Which of the following are file positioning functions in C?

fseek()

fsetpos()

getpos()

Both 1 and 2

Debugging allows you to :

Create a new program.

Connect to a database

Stall execution and study the flow of a complicated program.

All of the above.

Give the output of the following snippet :

struct student
{
    int no = 5;
    char name[20];
};
void main()
{
    struct student s;
    s.no = 8;
    printf("Hello");
}

5

8

Hello

Compiler error

Which of the following statements are used to alter the flow of control in a C program :

return

break

goto

All of the above.

Breakpoints allow you to :

Look at the state of the memory and variables in general.

See the state changes of variable in memory.

Understand the flow of a complicated program.

All of the above.

Breakpoints allow you to :

Understand language aspects like pointers, functions etc.

Connect to server

Create a new project.

All of the above.

Give the output of the following code snippet :

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

0

1

Compiler error

Garbage value

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

Which function is used to position the stream at the position recorded by fgetpos() function?

fsetpos()

setpos()

setposition()

filesetpos()

When is the increment statement(s) of the for loop executed?

After the loop gets executed.

Before the loop gets executed.

Either 1 or 2

None of the above.

Give the output of the following code snippet when the file 'Test.txt' is not available :

void main()
{
    char x;
    FILE *fp;
    fp=fopen("Test.txt","r");
    if(fp==NULL)
    {
        printf("Fail");
        exit(0);
    }
    fclose(fp);
}

No output

Null

Fail

Runtime error

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

Creates a new temporary file.

Creates a string which is not an existing file name

Generates the same name every time the function is called.

All of the above

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 :

void main()
{
    int x=0,y=1,z=2;
    x+y+z>1?x=10:y=20;
    if(x==10||y==20)
        printf("%d",10*x);
    else
        printf("%d",20*y);
}

100

200

400

Compilation error

Give the output of the following code snippet :

void test();
void main()
{
    test();
    test();
}
void test()
{
    static int x = 5;
    x++;
    printf("%d", x);
}

6 6

5 6

5 5

6 7

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);
}

20

30

0

Compilation error

Give the output of the following code snippet :

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

200 100

0 1

250 20

Compilation error

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

int

char

float

All 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

Following is a challenge with Visual studio for a beginner,

Not user friendly.

Unfriendly release time lines.

All of the above.

None of the the above.

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

Run

Debug

Either 1 or 2

None of the above

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 :

void main()
{
    register int x;
    printf("%d", x);
}

0

1

Compiler error

Garbage value.

Give the output of the following code :

struct p
{

    char c;
    float f;
};

int main()
{
    printf("%c %f \n", c, f);
}

0 0.0

Garbage value

Compilation error

No output.

Give the output of the following C code:

void hello()
{
    printf("Welcome");
}


void main()
{
    hello();
    printf("I repeat");
    hello();
}

Welcome

I repeat Welcome

Welcome I repeat Welcome

Welcome I repeat

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

char

int

float

void

Versions of Visual Studio are,

2005.

2006.

2007.

None of the above.

Name the looping statements available in C :

goto

return

while

All 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 :

struct p
{
    int k;
    char c;

};
int main()
{
    struct p x = {10,100};
    x.k=5;
    printf("%d %c\n", x.k,x.c);
}

10 100

5 100

5 d

10 d

Name some of the problems associated with goto statement :

Reduces readability of the code.

Can cause the program to produce an infinite loop if not used properly.

Both 1 and 2

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

Give the output of the following code snippet :

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

Garbage value

No output

0

Compiler error.

Give the output of the following code snippet :

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

    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

If the return type of a function is not mentioned, what is its default return type?

char

double

float

int

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

renamefile()

rnamef()

rename()

rnamefile()

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

Identify the type of error in the given code :

void main()
{
    int a = 10;
    {
        printf("Hello world");

        printf("%d",a);
    }

End of file error.

Undeclared identifier.

Missing semicolon (;)

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

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

Call Stack Window

Resource View

Bookmark Window

All of the above.

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

Create program

Compile

Debug

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("%4.4f",p+q-r);
}

7.5856

8.1110

8.1233

7.785

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

Strings can be manipulated similar to arrays.

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.

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()
{
    int a=13;
    if(a==12)
    {
        a==12?a=0:a=1;
        if(a==0)
            a++;
        else
            a--;
    }
    else
        a-2;
    printf("%d",a);
}

12

13

0

11

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 output of the following code snippet :

void main()
{
    int i = 0;
    for (i = 0; i <  3; i++)
    {
        if (i > 1)
            break;
        printf("Ho ");
    }
}

Ho Ho

Ho Ho Ho

Ho Ho Ho Ho

No output

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

w+

r+

a+

w

A function in C cannot return more than one value at once. State true or false :

Always true.

Always false.

Sometimes true and sometimes false

None of the above.

The conditional operator can be used to replace which condition statement in C?

switch-case

if-else

Either 1 or 2

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.

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

if()

if else()

switch()

All of the above.

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

Solution Explorer

Disassembly window

Bookmark Window

All of the above.

A function can be used as a parameter for another function. 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 :

int main()
{
    int i;
    for(i=0; i< =2; i++)
    {
        int i=5;
        printf("%d ",i);

    }
    printf("%d",i);

    return 0;
}

5 4 3 2

0 1 2 3

0 1 2 3 4 5

5 5 5 3

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

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

SDK

VS

DDK

All off the above.

Breakpoints allow you to :

Freeze the execution of the program.

Execute the program line by line and see the state changes.

Both 1 and 2

None of the above.

Which of the following is a valid array declaration in C ?

int arr[10];

int arr;

arr{10};

array arr[10];

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 are not features of Debugging with Visual Studio :

Solution Explorer.

F9 to breakpoint

Memory Window

None of the above.

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 main()
{
    for (int i = 0; i < 1; i++)
        printf("In the loop");
}

In the loop

No output

Error

None 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

When the breakpoint is placed at a particular line, the execution of the code is :

Permanently terminated.

Corrupted.

Stalled for a period.

None of the above.

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

void

int

break

static

Give the output of the following code snippet :

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

Assume input as 6 :

6

0

1

No output.

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

Versions of Visual Studio are,

2006.

2007.

2008

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);

Which of the following are constituents of a C program :

Keywords

Operators

Identifiers

All of the above

What is a text stream in C?

Sequence of lines with zero or more characters terminated by '\n'.

Sequence of alphabetic values.

Sequence of unprocessed bytes.

None of the above.

In C, if you pass an array as an argument to a function, what actually gets passed?

Value of elements in array

First element of array

Base address of the array

Address of last element of array.

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

Which of the following functions are required to access and create a file in C?

fopen()

fread()

fwrite()

All of the above

Wizard in Visual studio is normally a set of,

Dialogs

Windows which ask questions

Windows which you can click next or finish.

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

What is integrated into Visual Studio?

A text editor.

Intellisense.

A debugger.

All of the above.

Which is a Visual Studio edition.

Express.

Ultimate.

All of the above.

None 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 statements is not true about the tmpfile() function?

Creates a temporary file

Temporary file is opened in the mode wb+

Returns 0 if it is unable to create a file.

Both 1 and 3

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

0 400

20 200

100 200

40 100

Give the output of the following code snippet :

void main()
{
    int a=12;
    --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

Visual Studio has

Coloring for code

Auto Completions for code

All of the above

None of the above

Name the function key associated with setting up a breakpoint in VS :

F4

F7

F9

F2

Which of the following statements is an example of an array initialization in C?

int arr[5]={1,2,3,4};

int arr[5]={1;2;3;4};

int arr[5]=(1,2,3,4);

None of the above

Give the output of the following code snippet :

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

200 100

0 1

250 20

Compilation error

Which library function in C is used to read a single character from the text stream and returns its value?

getchar()

putchar()

printf()

scanf()

Give the output of the following code snippet :

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

Compilation error

Garbage value

No output

0.000000

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

What is the use of the compiler error code when an error occurs in a C program in VS?

Provides more information about the error that occurs.

The type of error can be identified based on the particular code.

Can be used to search online for help, based on the error code

All of the above

When a program begins execution, which of the following streams are open?

stdio

stdlib

stderr

Both 1 and 2

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

1

2

3

None of the above.

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

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

The address of the values are sent as parameters to the calling function.

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

Both 1 and 2

Which of the following is not a debugger :

GDB

Visual Studio Integrated Debugger

Adobe Photoshop

All of the above.

If the fopen() function is not able to open a file, then what does it return?

EOF

Null

Runtime error

None of the above.

How many arguments does the getchar() function take?

1

2

3

0

How many arguments does the function fopen() take?

1

2

3

0

Wizard in Visual studio is normally a set of,

Dialogs.

Magics

Conversation

None of the above

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 :

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

    printf("%d %c %c ",t1.a,t1.b,p.c);
}

10 A Garbage Value

10 A e

Compilation error

No output

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

File > New > Project

File > New > Solution

File >New > Wizard

None of the above.

Which of the following statements is true about the EOF character in C?

It is used to denote the end of a file in C.

It is an integer value.

It is defined in the header file < stdio.h>

All of the above.

A function in C must always return a value. State true or false :

Always true.

Always false.

Sometimes true and sometimes false

None of the above.

Which function prints an error message corresponding to integer in errno ?

printerr()

perror()

perr()

printerr()

Give the output of the following code snippet :

void main()
{
    int arr[10]= {5};
    printf("%d %d",arr[1],arr[9]);
}

0 5

0 0

0 Garbage value

Compile time 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

Give the output of the following program :

struct emp
{
    char n[10];
    int age;
};

void main()
{

    struct emp e1 = {"Hello", 23};
    struct emp e2 = e1;
    printf("%s\n", e2.n);

}

Hello

No output

Compiler error

Garbage value

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

SOK,

VSD

Both of the above

None of the above

Give the output of the following code snippet :

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

1

0

Infinite loop

Compilation error

In which header file is the integer expression errno declared?

error.h

errnum.h

errno.h

errornum.h

Give the output of the following code snippet :

void main()
{
    int i=3,x=10;
    i++;
    switch(i)
    {
    case 2:
        printf("%d ",x++);
        break;
    case 3:
        printf("%d ",x+2);
    case 4:
        printf("%d ",x+3);
    default:
        printf("Hello");
        break;
    }
}

13 Hello

12 13 Hello

Hello

Compilation error

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 correctly accesses the seventh element stored in arr, an array with 10 elements?

arr[6];

arr[7];

arr(7);

arr ;

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

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.

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

auto

register

float

volatile

For a 32 bit float number with 6 significant bits, the magnitude lies between :

10^-38 to 10^+38

2^-38 to 2^+38

10^-36 to 10^+36

2^-38 to 2^+38

Write the given if else statements using conditional operator in C :

if (x <  y)
{
    min = x;
}
else
{
    min = y;
}

min = (x < y) ! x : y;

min = (x < y) ? x : y;

min = (x < y) > x : y;

None of the above.

Which of the following are constituents of a C program :

Keywords

Tokens and aliases

Comments

All 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.

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

=

==

&&

All of the above.

Which among the following is the correct syntax to declare a variable as static and register?

static register a;

register static a;

Both (1) and (2)

We cannot use static and register together.

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 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.

What is the return type of the getchar() function?

int

char

float

string

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

conio.h

string.h

stdio.h

math.h

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 :

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

}

10

9

0

Compilation error

The function declaration in C provides information to the compiler about :

Function name

Return type

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);
        break;
    case a:
        printf("%d",a++);
        break;
        printf("%d",a);
    }
}

10

11

0

Compilation error

Give the output of the following code snippet :

int main()
{
    int i;
    for(i=0; i< =6; i++)
    {
        if(i <  3)
            continue;
        else
            printf("Test");
        break;

    }
    return 0;
}

TestTestTest

Test

No output

None of the above.

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.

Give the output of the following code :

int main()

{
    int i=5;
    while(i)

    {
        printf("Hello world");
    }
    return 0;
}

Hello World

No output

Compiler error

Infinite loop

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

break

float

static

case

What are the functions that are available to manipulate strings in C?

String copy

String compare

String length

All of the above.

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

Give the output of the following code snippet :

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

1001

0

No output

Compilation error

Give the output of the following code snippet :

int func()
{
    return (double)5.0;
}
void main()
{

    printf("%d", func());
}

5.0

0

5

Compiler 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

Give the output of the following code snippet :

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

0

3

4

Runtime error

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 following are not user interfaces that help to debug a program with Visual Studio:

Call stack window.

F9 to breakpoint

Disassembly Window

None of the above.

What is the unsigned integral produced by the sizeof operator?

size

size_t

size_r

size_w

Give the output of the following code snippet :

int func(int x)
{
    int y=x++;
    return x*y;
}
void main()
{
    int a=2;
    int b=1;
    int c=a*b+func(a)*func(b);
    printf("%d",c);
}

12

15

14

18

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

Disassembly Window

All of the above.

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);
    fclose(fp);
}

D

-1

No output

Compilation error

Give the output of the following code snippet :

int main()
{
    FILE *fp1,*fp2;

    fp1=fopen("day.text","r");
    fp2=fopen("night.txt","r");
    fclose(fp1,fp2);
    return 0;
}

File pointers for both files are returned.

Null

Compiler error

None of the above

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

–32,768 to 32,767

0 to 255

–128 to 127

None 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 main()
{
    int i=0;
    if(i--)
    {
        printf("%d",i++);
        main();
    }
    else
        printf("%d",--i);
}

-1

1

0

-2

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

0

1

10

None of the above.

Which keyword can be used for exiting recursion?

break

return

exit

None of the above.

Which of the following statements are true about recursion?

Recursion is a method where a function calls itself.

It is a method to accomplish looping.

Improper use of recursive functions lead to stack overflow.

All of the above.

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

Initialization

Condition

Iteration

All 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

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

Which of the following is a storage specifier?

enum

static

auto

Both 2 and 3

Which of the following functions are available in the header file string.h in C?

strcpy

strcmp

strcat

All of the above.

According to the presenter, to overcome the learning curve with Visual Studio, with ease, it’s better to

Watch videos.

Read documentation.

Read books.

All of the above.

Give the output of the following code snippet :

void main()
{
    int n;
    for (n = 4; n!=0; n--)
        printf("%d ", n--);

}

4 3 2 1

4 3 2 1 0

4 2

Infinite loop

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

0

1

10

None of the above.

What are the arguments passed to the fread() 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 :

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

Give the output of the following code snippet :

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

TestTestTest

TestTest

No output

None of the above.

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

void main()
{
    FILE *fp,*fp1;
    char x[20];
    fp = fopen("Test.txt","r");
    char i=0;
    while(i=fgetc(fp)!=NULL)
    {
        printf("%c",i);
    }
    fclose(fp);

}

Hello

World

Infinite loop

Compilation error

Boiler plate code is auto-generated in Visual Studio by

Operating system

Programmer

Wizards

More than one 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 keywords denote the size and type of a variable in C :

main

double

static

volatile

Give the output of the following code snippet :

void main()
{
    int k;
    for (k = -3; k <  -5; k++)
        printf("Hello");
}

Hello

HelloHello

No output

None of the above

Give the output of the following code :

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

0

-1

1

None of the above.

Give the output of the following code :

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

}
void main()
{
    fun();
}

Hello

Compiler error

No output

None of the above

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

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

space

letter

digit

newline

The nth element of an array arr[n] of n values is accessed by:

arr[n]

arr[n-1]

arr[n+1]

None of the above

Give the output of the following code snippet :

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

200 10

250 20

20 20

0 1

Give the output of the following code snippet :

struct student
{
    int no;
};
void main()
{
    struct student s;
    s.no=1001;
    printf("%d",s.no);
}

1001

0

No output

Compilation error

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

long

extern

union

None of the above.

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

int add< int a,intb>

int add(int a,intb)

int add(int b,intc);

All of the above

Which of the following is a two dimensional array in C :

int arr[10][20];

array arr[10][20];

int arr(10)(20);

None of the above

Give the output of the following code snippet :

void main()
{
    char i='d';
    if((i=='d') && (i=='D'))
        printf("Values match");
    else
        printf("No match");
}

Values match

No match

No output

None of the above

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

Strings are array of characters in memory.

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

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

All of the above.

What is the range of the values allowed for the data type 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 :

struct point
{
    int x;
    int y;
};
int main()
{
    struct point p1 = {10};
    p1 = fun();
    printf("%d\n", p1.x);
}
struct point fun()
{
    struct point temp = {1, 2};
    return temp;
}

1

10

0

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.

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 mark1,mark2,mark3;
};

int main()
{
    struct p x = {100};
    printf("%d %d %d\n",x.mark1,x.mark2,x.mark3);
}

0 0 100

100 0 0

100 Garbage value

Compilation error

Give the output of the following code snippet :

struct student
{
    char c[10];
};
void main()
{
    struct student s;
    printf("%d", sizeof(s));
}

1

10

4

Compilation error

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

Which of the following statements is true with regards to the break statement :

It is a flow control statement.

Can be used inside any of the loops like for, while and do while.

Suspends the execution of the loop for that iteration and transfers the control back to the loop for the next iteration.

All of the above

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

w+

r+

a+

w

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 :

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

Give the output of the following code snippet :

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

}

Hello

No output

Compiler error

None of the above.

The rewind(fp) function is equivalent to which of the following functions?

ftell(File *stream)

fseek(fp,0L,SEEK_SET)

fseek(fp,1L,SEEK_SET)

fgetpos(FILE *stream,fpos_t *ptr)

Give the output of the following code :

struct student
{
    int no;
    char name[20];
};

void main()
{

    struct student s;
    no = 8;
    printf("%d", no);
}

8

No output

Compiler error

Garbage value.

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

arr[11]

arr[10]

arr[9]

None of the above

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

main

include

extern

case

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

case

return

unsigned int

const

Give the output of the following code snippet :

void main()
{
    int a=13;
    if(a==12)
    {
        a==12?a=0:a=1;
        if(a==0)
            a++;
        else
            a--;
    }
    if(a==13)
        a=a-2;
    printf("%d",a);
}

12

13

0

11

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 :

void main()
{
    char str[]="HelloWorld";
    int z=10*3+5-4;
    if(z< 10)
        printf("%s",str);
    else
        printf("%20s",str);

}

HelloWorld

Hello

HelloWorld

Runtime error

Visual Studio has

Coloring for code

Painting for code.

All of the above

None of the above

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,*fp1;
    fp=fopen("Test.txt","w+");
    fputc('S',fp);
    fclose(fp);
    fp1=fopen("Test.txt","r");
    while((x=getc(fp1))!=EOF)
    {
        printf("%c",x);
    }
    fclose(fp1);
}

Hello World

Hello World S

S Hello World

S

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

Call Stack Window

Disassembly Window.

Memory Window

All of the above.

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 :

void func(int a,int b)
{
    int z=a > b?a=10:a=20*10;
    printf("%d ",z);
}
int main()
{
    func(100,250);
    func(30,20);
}

10 10

250 30

200 10

250 10

What is the total length of the string containing n characters in C?

n

n-1

n+1

None of the above.