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

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Memory Allocation

Memory Allocation - 1 Memory Allocation - 2
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C Operators Questions and Answers

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 Questions

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

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

A. 8

B. 5

C. 7

D. 6

x

 

Option: D

Explanation

Same principle as we do for ++ operator.

Answer


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

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

A. 8

B. 9

C. 7

D. 6

x

 

Option: A

Explanation

a = --i + --i + --i;

a = 4 + --i + --i

a = 4 + 3 + --i

a = 3 + 3 + --i

a = 3 + 3 + 2

Finally a = 8. got it?

Answer


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

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

A. -2

B. -3

C. -1

D. -4

x

 

Option: D

Explanation

Now we go straight way to the program.

a = --i - --i - --i - --i;

a = 4 - --i - --i - --i

a = 4 - 3 - --i - --i

a = 3 - 3 - --i - --i

a = 3 - 3 - 2 - --i

a = 3 - 3 - 2 - 1

Finally a = -3. got it?

Answer


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

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

A. Compilation error

B. 3 3 1 3 1

C. 3 3 1 3 0

D. some garbage value

x

 

Option: B

Explanation

As operator enjoys priority && have more priority than ||.

m = a++ && b++ && c++ || d++;

m = 1 && c++ || d++;

m = 1 || d++;

m = 1 || 0;

m = 1;

Answer


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

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

A. 7

B. 9

C. 8

D. 10

x

 

Option: C

Explanation

a = --i + ++i - i-- + --i

a = 4 + ++i - i-- + --i

a = 4 + 5 - i-- + --i

a = 5 + 5 - 5 + --i

a = 5 + 5 - 5 + 3

Finally a = 8. got it?

Answer


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