Interview Questions on loops in C - for, while & do-while Page 2 of 2

Question: 21

How many times CppBuzz.com is printed?
int main()
{
int a = 0;
while(a++ < 5-++a)
printf("CppBuzz.com");
return 0;
}

(A) 5 times
(B) 4 times
(C) 2 times
(D) 1 time

Compiler
Level: Expert Category of MCQ: loops

Question: 22

int main()
{
     int x = 10;
	{
	    int x = 0;
	    printf("%d",x);
	}
    return 0;
}

(A) 10
(B) Compilation Error
(C) 0
(D) Undefined

Compiler
Level: Beginner Category of MCQ: loops

Question: 23

The ASCII code of ‘0’ (zero) is?

(A) 48D
(B) 32H
(C) 0011 1000
(D) 42H

Compiler
Level: Beginner Category of MCQ: loops

Question: 24

Does this program get compiled successfully?

#include stdio.h

int main()
{
	printf("CppBuzz.com");
	return 0;
 	
}

(A) Yes
(B) No
(C) Depends on Compiler

Compiler
Level: Beginner Category of MCQ: loops

Question: 25

#include  "stdio.h"
int main()
{
int a = 0;
if(a = printf("How old are you?"))
{   
printf("%d - too young", a);	
}

return 0;
}

(A) 0 - too young
(B) Compilation Error
(C) Nothing is printed
(D) How old are you? 16 - too young

Compiler
Level: Practitioner Category of MCQ: loops

Question: 26

#include  "stdio.h"
int main()
{
if(printf("C programming is"))
{   
printf("Easy");
}
else
{
printf("Hard");
}

return 0;
}

(A) Easy
(B) Hard
(C) C programming is Easy
(D) None of the above

Compiler
Level: Practitioner Category of MCQ: loops

Question: 27

#include  "stdio.h"
int main()
{
    int a = 10, b = 20;
    if(a=b)
    {   
        printf("Easy");
    }
    else
    {
        printf("Hard");
    }

    return 0;
}

(A) Easy
(B) Hard
(C) EasyHard
(D) Error in program

Compiler
Level: Practitioner Category of MCQ: loops

Question: 28

//Program is compiled on gcc/Dev-C++ (32 bit) compiler
#include "stdio.h"
#include "string.h"

int main()
{
char arr[] = "CppBuzz.com"
printf("%d", ++arr[0]);
return 0;
}

(A) C
(B) 68
(C) D
(D) 67

Compiler
Level: Beginner Category of MCQ: loops

Question: 29

What will be the output of following code?
#include<stdio.h>

int main()
{
int a=4*4+2;
printf("%d",--a);
return 0;
}

(A) 17
(B) 23
(C) 24
(D) 18

Compiler
Level: Beginner Category of MCQ: loops

Question: 30

Find the output if n is 6

#include <stdio.h>

int main()
{
  int sum=0, i, j,n;
  n=6;
  
  for(i=1; i<=n; i++){      
      for(j=1; j<=n; j++){
          sum += (i+j);
      }
  }

printf("%d", sum);

return 0;
}

(A) 150
(B) 168
(C) 195
(D) 252

Compiler
Level: Beginner Category of MCQ: loops

Question: 31

#include "stdio.h"
main()
{
int a[] = {10,20,30};
printf("%d",*a+1);
}

(A) 10
(B) 20
(C) 11
(D) 21

Compiler
Level: Beginner Category of MCQ: loops

Question: 32

What is the output of the program?
#include <stdio.h>

int main()
{
for(i=3;i<15;i++);
printf("%d",i); return 0; }

(A) 3
(B) 15
(C) 16
(D) Compilation error

Compiler
Level: Beginner Category of MCQ: loops

Question: 33

union example{

};

int main(){
    
printf("%d", sizeof(union example));
return 0;
}

(A) 0
(B) 1
(C) 2
(D) 4

Compiler
Level: Beginner Category of MCQ: loops

Question: 34

what is the output of the following code
#include "stdio.h"
int main()
{
    while(!printf("hello")){}
	return 0;
}

(A) compilation error
(B) hello
(C) no output
(D) runtime error

Compiler
Level: Beginner Category of MCQ: loops

Question: 35

What will be the output of following program ?
#include <stdio.h>
void main()
{
char cnt=0;
for(;cnt++;printf("%d",cnt)) ;
printf("%d",cnt);
}

(A) 0 1 2 3 ... infinite times
(B) 0 1 2 ... 127
(C) 0
(D) 1

Compiler
Level: Beginner Category of MCQ: loops

Question: 36

#include < stdio.h >
int main()
{
    int tally=0;
    for(;;)
    {
        if(tally==10)
            break;
        printf("%d ",++tally);
    }
    return 0;
}

(A) 0 1 2 3 4 5 6 7 8 9 10
(B) 0 1 2 3 ... infinite times
(C) 1 2 3 4 5 6 7 8 9 10
(D) 1 2 3 4 5 6 7 8 9

Compiler
Level: Beginner Category of MCQ: loops

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Interview Questions on Loops in C : (16)

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