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C printf 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

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

#include<stdio.h>
int main() 
{ 
	printf("\nab"); 
	printf("\bsi");
	printf("\rha");
	return 0;
}

A. asiha

B. abha

C. aha

D. hai

x

 

Option: D

Explanation

First printf will print 'ab'.

Second printf will print 'si' with backspacing 'b' , now the result is 'asi'.

Third printf will has '\r'(return carriage) which returns the cursor to the starting point and 'ha' will replace the word 'as' from 'asi'.

Thus the result is hai.

Answer


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

#include<stdio.h>
int main()
{
	float num = 8.88;    
	char status[10] = "'out'";
	printf("\t\t%d",printf("\nfloat"));
	printf("\t%d",printf("\n%f",num));
	printf("\t\t%d",printf("\n%s",status));
	return 0;
}

A. float 6
    8.880000 9
   'out' 6

B. float 6
    8.880000 9
   'out' 4

C. float 5
    8.880000 9
   'out' 4

D. float 5
    8.880000 9
   'out' 4

x

 

Option: A

Explanation

In first printf, the inner printf prints float and counts 6(ie nfloat),

In second printf, the inner printf prints 8.880000 and counts 9

In third printf, the inner printf prints 'out' and counts 6(ie s'out')

Answer


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

#include<stdio.h>
#define sqr(x) ++x * ++x
int main()
{
	int a = 2,z;
	z = ++a * ++a;     
	a -= 2;
	printf("%d %d",sqr(a),z);
	return 0;
}

A. 16 6

B. 6 6

C. 4 4

D. 16 16

x

 

Option: D

Explanation

z = 4* 4 and then same comes for the sqr(2) which is 4 * 4. Finally answer is 16 16.

Answer


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

#include<stdio.h>
int main()
{
	printf("ABCD\xA");
	printf("EFG");
	return 0;
}

A. ABCDEFG

B. ABCD
    EFG

C. ABCAEFG

D. Compilation Error

x

 

Option: B

Explanation

Alternative form of \n is \xA (new line).

Answer


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

#include<stdio.h>
int main()
{
	printf("ABCD\xD");
	printf("EFG");
	return 0;
}

A. ABCEFG

B. Compilation error

C. AEFG

D. EFGD

x

 

Option: D

Explanation

Alternative form of \r is \xD (carriage return).

Answer


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