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
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C Variables 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 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

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

#include<stdio.h>
int main()
{
	int scanf = 13;
	printf("%d",scanf);
	return 0;
}

A. 0

B. 13

C. Runtime error

D. Compilation error

x

 

Option: B

Explanation

scanf as a variable name is possible because we have not used it as function declaration( int scanf()=13 ).

Answer


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

#include<stdio.h>
int main()
{
	int printf = 13;
	int c = 7 + printf; 
	printf("%d",c);
	return 0;
}

A. Compilation error

B. 20

C. Runtime error

D. garbage value

x

 

Option: A

Explanation

What's wrong with printf here and what's right with previous question scanf. Here we explain

printf can be declared as a variable, when to outputted the value stored in the printf variable, we use printf() inbuilt function.

when we use printf() it will search for printf() function in our program, here we declared printf as a variable and not as a function , thus it leads to compiletime error.

Answer


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

#include<stdio.h>
int main()
{
	char printf[25] = "printf";
	puts(printf);
	return 0;
}

A. Garbage value

B. Compilation error

C. Runtime error

D. printf

x

 

Option: D

Explanation

As we explained in previous program, we used puts() instead of printf() in-built function. Thus there is no problem with output.

Answer


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

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

A. 0

B. Compilation error

C. Garbage value

D. -1

x

 

Option: B

Explanation

In C, EOF is a predefined macro constant. We do not have any permission even to declare EOF as a variable name. Then for sure we cannot declare or increment any values to EOF- End Of File

Answer


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

#include<stdio.h>
int main(){
	int VARIABLE = 15;
	printf("%d",variable);
	return 0;
}

A. no output

B. 15

C. Compilation error

D. 0

x

 

Option: C

Explanation

C is case-sensitive as all common programming language.

Answer


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