Pointers - C Questions

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Data Types - C Questions

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Operators - C Questions

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Structures - C Questions

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Files - C Questions

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printf - C Questions

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Variables - C Questions

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Preprocessor Macros

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While Loop - C Questions

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for Loop - C Questions

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if else - C Questions

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Switch case - C Questions

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Array - C Questions

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Functions - C Questions

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Memory Allocation

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C Interview Operators 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 Operators 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 Operators to make your MNC interview very easy.

Interview Operators Questions

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

#include<stdio.h>
int main()
{
	int a = 4, b = 2;
	printf("a^b = %d", a^b);
	return 0;
	
}

A. 12

B. 10

C. 8

D. 6

x

 

Option: D

Explanation

^ represent XOR otherwise called as exclusive OR.

Bitwise EX OR operator returns  1 if and only if either of the operands is  1 

Bitwise EX OR operator returns  0  for similar inputs

Here a = 4 which is a = 0100

and b = 2 which is b = 0010

0100 * 0010 = 0110

Thus output is 0110 i.e) 6

Answer


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

#include<stdio.h>
int main()
{
	int a = 4, b = 2;
	printf("a|b = %d\n", a|b);
	return 0;
}

A. 6

B. 7

C. 5

D. 4

x

 

Option: A

Explanation

Bitwise OR operator returns  1  either or both of the operands are  1 .

Here a = 4 which is a = 0100

and b = 2 which is b = 0010

0100 * 0010 = 0110

Thus output is 0110 i.e) 6

Answer


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

#include<stdio.h>
int main()
{
	int a = 7, b = 4, c = 2;
	printf("a|b&c = %d\n", a|b&c);
	return 0;
}

A. 3

B. 8

C. 6

D. 7

x

 

Option: D

Explanation

As operator enjoys priority, & has higher priority over |.

a = 7 which is 0111

b = 4 which is 0100

c = 2 which is 0010

Now a|b&c which is 0111|0100& 0010.

0111|0000.

0111 which is 7 and then outputted.

Answer


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

#include<stdio.h>
int main()
{
	int s[3] = {'\0', '\0'};
	int x[3] = {'\0', '\0'};
	int c = s[1] + x[0];
	printf("%d",c);
	return 0;
}

A. Compilation error

B. 0

C. No Output

D. some garbage value

x

 

Option: B

Explanation

all value are set to \0 NULL.

Answer


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

#include<stdio.h>
int main()
{
	int a = NULL - true;
	printf("%d",a);
	return 0;
}

A. Compilation error

B. 1

C. -1

D. Runtime error

x

 

Option: C

Explanation

Simply, NULL = 0; and true = 1;

0 - 1 = -1

Answer


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