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C printf Tricky Interview Questions

In most of the MNC interview questions such as in ZOHO interview question, IVTL Infoview interview questions, Amazon interview questions, GOOGLE interview questions, Infosys interview questions and even in Voonik interview questions, We come across several Tricky C Questions about which 2:5 of the questions are from Printf in c. Solving that kind of tricky C questions is not an easy task for all C programmers. We need more practices to solve it with ease. So we provide 25+ interesting C questions in Printf to make your MNC interview very easy.

C Printf Questions and Answers

21. What will be the output of the C program?

#include<stdio.h>
int main(){
	char str[25];
	printf(" %d ",printf("c-aptitude"));
	return 0;
}

A. 10  c-aptitude

B. c-aptitude  9

C. 9  c-aptitude

D. c-aptitude  10

x

 

Option: D

Explanation

Inner printf() will print first and then outer printf will display the length of the inner printf's string.

Answer


22. What will be the output of the C program?

#include<stdio.h>
# define loop while(true)
int main()
{
	loop;  
	printf("c-aptitude");
	return 0;
}

A. program never ends

B. c-aptitude

C. Compilation error

D. none of the above

x

 

Option: A

Explanation

Yes, its infinite while loop.

Answer


23. What will be the output of the C program?

#include<stdio.h>
int main()
{
    printf("%d", 5.00);
    return 0;
}

A. Runtime error

B. Compilation error

C. 5

D. 0

x

 

Option: D

Explanation

when we print the integer with .000 and many zero's as an extension then output will be 0.

Answer


24. What will be the output of the C program?

#include<stdio.h>
int main()
{
	printf("%d",5.25);
	return 0;
}

A. Compilation error

B. garbage value

C. 5

D. 0

x

 

Option: B

Explanation

5.25 is neitheir a pure integer number(5) nor impure integer number(5.00).

Answer


25. What will be the output of the C program neglecting user input?

#include<stdio.h>
int main()
{
	int a, b;
	printf("%d",(scanf("%d %d",&a,&b)));	
	return 0;
}

A. Compilation error

B. 1

C. 2

D. none of the above

x

 

Option: C

Explanation

Here scanf reads 2 input, thus printf display the value 2.

Answer


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