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Frequently Asked C interview questions and answers for freshers

(#M40165491) C QUESTION Keep an EYE

Consider the following code:

for i= m to n increment 2
{ print "Hello!" }

Assuming m < n and exactly one of (m,n) is even, how many times will Hello be printed?
Option 1 : (n - m + 1)/2
Option 2 : 1 + (n - m)/2
Option 3 : 1 + (n - m)/2 if m is even, (n - m + 1)/2 if m is odd
Option 4 : (n - m + 1)/2 if m is even, 1 + (n - m)/2 if m is odd

Asked In C Dastagiri Sha (3 years ago)

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(#M40037735) C QUESTION Keep an EYE

Consider the following code:

function modify(y,z)
{
y = y + 1
z = z + 1
return y - z
}

function calculate( )
{
integer a = 12, b = 20, c

c = modify(a, b);
print a
print space
print c
}

Assume that a and b were passed by reference. What will be the output of the function calculate( ) ?

Asked In C Srishti Sinha (7 years ago)

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(#M40018713) C QUESTION C- QUESTIONS Keep an EYE

The keyword used to transfer control from a function back to the calling function is

Options
1) switch
2) goto
3) go back
4) return

Asked In C (8 years ago)

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(#M40152256) C QUESTION Keep an EYE

Which of the following is the correct syntax for declaration of a structure?
Select one:
struct_name;
Struct struct_name;
struct
{
Struct_name;
}
struct struct_name;

Asked In C priya (6 years ago)

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(#M40018736) C QUESTION C- QUESTIONS Keep an EYE

Point out the error if any in the following program (Turbo C).
#include
#include
void display(int num, ...);

int main()
{
display(4, 'A', 'a', 'b', 'c');
return 0;
}
void display(int num, ...)
{
char c; int j;
va_list ptr;
va_start(ptr, num);
for(j=1; j<=num; j++)
{
c = va_arg(ptr, char);
printf("%c", c);
}
}
Options
1) Error: unknown variable ptr
2) Error: Lvalue required for parameter
3) No error and print A a b c
4) No error and print 4 A a b c

Asked In C (8 years ago)

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(#M40154368) C QUESTION Keep an EYE

integer i=0,j
while( i < 2 )
{
j = 0;
while ( j <= 3*i )
{
print j
print blank space
j = j + 3
}
print end-of-line //takes the cursor to the next line
i = i + 1
}
What will be the output of the program?

Asked In C Soumya Mohanty (6 years ago)

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(#M40125974) C QUESTION Main function Keep an EYE

Function main is the starting point of execution of a program. Which of the following options shall help in making an executable program without the
use of main function in the program?
1. Any function can be made and marked as starting point using a language dependent syntax
2. Two macros can be used. One to hold the name of a function and its working and the other to call the first macro
3. Any program without a main function shall not do anything but can only produce a blank screen
4. It is not possible to run a program without a main function in a program

Asked In C Rinkalkumar Kalola (6 years ago)

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(#M40018746) C QUESTION C- QUESTIONS Keep an EYE

What will be the output of the program?
#include
int main()
{
int x=12, y=7, z;
z = x!=4 || y == 2;
printf("z=%dn", z);
return 0;
}
Options
1) z=0
2) z=1
3) z=4
4) z=2

Asked In C (8 years ago)

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(#M40018741) C QUESTION C- QUESTIONS Keep an EYE

What will be the output of the program?
#include
int main()
{
char str[]="C-program";
int a = 5;
printf(a >10?"Psn":"%sn", str);
return 0;
}
Options
1) C-program
2) Ps
3) Error
4) None of above

Asked In C (8 years ago)

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(#M40018720) C QUESTION C- QUESTIONS Keep an EYE

Input/output function prototypes and macros are defined in which header file?

Options
1) conio.h
2) stdlib.h
3) stdio.h
4) dos.h

Asked In C (8 years ago)

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