Pointers - C Questions

Pointers Questions - 1 Pointers Questions - 2 Pointers Questions - 3 Pointers Questions - 4 Pointers Questions - 5 Pointers Questions - 6 Pointers Questions - 7 Pointers Questions - 8

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
The ones who are crazy enough to think they can change the world are the ones who do.
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C Variables 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 Variables 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 Variables to make your MNC interview very easy.

C Variables Questions

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

#include<stdio.h>
int main()
{
	int main = 47;
	printf("%d",main);
	return 0;
}

A. Compilation error

B. Garbage value

C. Runtime error

D. 47

x

 

Option: D

Explanation

main can be declared as a variable name, but not as a function name.

Answer


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

#include<stdio.h>
int main()
{
	extern num;
	printf("%d",num);
	return 0;
}
int num = 36;

A. 36

B. Runtime error

C. 0

D. Compiletime error

x

 

Option: A

Explanation

Here num is a variable name of external type, thus declaring a value to the same variable name outside the scope is must.

Answer


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

#include<stdio.h>
int main()
{
	int xyz = 20;
	{
	int xyz = 40;
	}
	printf("%d",xyz);
	return 0;
}

A. garbage value

B. Compilation error

C. 40

D. 20

x

 

Option: D

Explanation

int xyz = 20; is a global variable, and int xyz = 40 is a local variable, Here we are calling xyz outside the scope of xyz = 40. Thus it outputted 20.

Answer


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

#include<stdio.h>
int main()
{
	int xyz = --20;
	printf("%d",xyz);
	return 0;
}

A. Runtime error

B. Compilation error

C. 19

D. 20

x

 

Option: B

Explanation

decrement or increment operator cannot be initialize to any values.

Answer


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

#include<stdio.h>
int main(){
	char arr[] = "Cat";
	*arr = 'B';
	printf("%s", arr);
	return 0;
}

A. Cat

B. Compilation error

C. Bat

D. Some Garbage value

x

 

Option: C

Explanation

*arr = 'B' tells to compiler to replace the first letter of arr[] to 'B'. Thus Cat changes to Bat.

Answer


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