Pointers - C Questions

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Data Types - C Questions

Data Types Questions - 1 Data Types Questions - 2 Data Types Questions - 3 Data Types Questions - 4 Data Types Questions - 5

Operators - C Questions

Operators Questions - 1 Operators Questions - 2 Operators Questions - 3 Operators Questions - 4 Operators Questions - 5

Structures - C Questions

Structures Questions - 1 Structures Questions - 2 Structures Questions - 3 Structures Questions - 4 Structures Questions - 5

Files - C Questions

Files Questions - 1 Files Questions - 2 Files Questions - 3 Files Questions - 4 Files Questions - 5

printf - C Questions

printf Questions - 1 printf Questions - 2 printf Questions - 3 printf Questions - 4 printf Questions - 5

Variables - C Questions

Variables Questions - 1 Variables Questions - 2 Variables Questions - 3 Variables Questions - 4 Variables Questions - 5

Preprocessor Macros

Preprocessor Macros - 1 Preprocessor Macros - 2 Preprocessor Macros - 3 Preprocessor Macros - 4 Preprocessor Macros - 5

While Loop - C Questions

While Loop Questions - 1 While Loop Questions - 2 While Loop Questions - 3 While Loop Questions - 4 While Loop Questions - 5

for Loop - C Questions

for Loop Questions - 1 for Loop Questions - 2 for Loop Questions - 3 for Loop Questions - 4 for Loop Questions - 5

if else - C Questions

if else Questions - 1 if else Questions - 2 if else Questions - 3 if else Questions - 4 if else Questions - 5

Switch case - C Questions

Switch case Questions - 1 Switch case Questions - 2 Switch case Questions - 3 Switch case Questions - 4 Switch case Questions - 5

Array - C Questions

Array Questions - 1 Array Questions - 2 Array Questions - 3 Array Questions - 4 Array Questions - 5

Functions - C Questions

Functions Questions - 1 Functions Questions - 2 Functions Questions - 3 Functions Questions - 4 Functions Questions - 5

Memory Allocation

Memory Allocation - 1 Memory Allocation - 2
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C Operators Tricky 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.

Operators Tricky Questions

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

#include<stdio.h>
int main()
{
	int a = 5;
	a = 1, 2, 3;
	printf("%d", a);
	return 0;
}

A. 3

B. 5

C. compilation error

D. 1

x

 

Option: D

Explanation

Priority for the values assigned to any variable is given from left to right.

Answer


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

#include<stdio.h>
int main()
{
	int a;
	a = (1, 2, 3);
	printf("%d", a);
	return 0;
}

A. 8

B. 9

C. 7

D. 6

x

 

Option: A

Explanation

Priority for the values inside a brackets () assigned to any variable is given from right to left.

Answer


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

#include<stdio.h>
int main()
{
	int x[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
	printf("%d",sizeof(x));
	return 0;
}

A. 2

B. 4

C. 20

D. 40

x

 

Option: D

Explanation

Now we go straight way to the program.

Here x is an array variable which holds 10 integer values. Thus sizeof int is 4, then 4 * 10 = 40.

Answer


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

#include<stdio.h>
int main()
{
	unsigned int num = -4;
	printf("%d", ~num);
	return 0;
}

A. Compilation error

B. 3

C. 4

D. some garbage value

x

 

Option: B

Explanation

~ is a One's Complement bitwise operator.

the function of ~ is a One's Complement is to inverse all value only after converting a decimal value to binary 0's and 1's

Here int num = -4;

which is num = -100 (in binary 0's and 1's)

~num = +011 (in binary 0's and 1's)

~num = 3

Answer


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

#include<stdio.h>
int main()
{
	int x = 2;
	(x & 1) ? printf("true") : printf("false");
	return 0;
}

A. Compilation error

B. true

C. false

D. Runtime error

x

 

Option: C

Explanation

As & is a unary operator we have to assume all decimal values to binary(0's and 1's)

int x = 2 (in decimal)

x = 00000010( in decimal 0's and 1's)

Now we go for condition (00000010 & 00000001)

Clearly, condition false as it leads to 0 when multiplied.

Answer


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