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

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

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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 Interview Structures 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 Structure 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 structure to make your MNC interview very easy.

C Structures Questions and Answers

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

#include<stdio.h>
int main()
{
	struct num 
	{
	int i, j, k, l;
	};
	struct num n = {1, 2, 3};
	printf("%d %d %d %d", n.i, n.j, n.k, n.l);
}

A. 1 2 3 garbage value

B. 1 2 3 0

C. 1 2 3 3

D. None of the above

x

 

Option: B

Explanation

Struture members always intialised to 0 by default.

Answer


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

#include<stdio.h>
int main()
{
	struct num 
	{
	int i, j, k, l;
	};
	struct num n = {1, 2, 3};
	printf("%d %d %d %d", i, j, k, l);
}

A. 1 2 3 0

B. 1 2 3 4

C. 1 2 3 garbage value

D. Compilation Error

x

 

Option: D

Explanation

Don't forgot to mention structure variable to access structure members.

Answer


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

#include<stdio.h>
int main()
{
	int i = 2;
	enum numbers{num1 = i, num2 , num3}n;
	printf("%d %d %d\n", num1, num2, num3);
}

A. Compilation Error

B. 2 3 4

C. 1 2 3

D. None of the above

x

 

Option: A

Explanation

Error: enumerator value for 'num1' is not an integer constant. So we can assign only literals or constants to the enum.

Answer


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

#include<stdio.h>
int main()
{
	struct st 
	{
		int i;		
		static int si;
	};
	struct st s = {1, 2};
	printf("%d %d", s.i, s.si);
	return 0;
}

A. 1 2

B. Linker Error

C. Runtime Error

D. Compilation Error

x

 

Option: D

Explanation

Error: cannot have a static data member in a local class.
In C, struct type does not allow to have static members.

Answer


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

#include<stdio.h>
int main()
{
	union check
	{
		int i;
		int a[10];
	};
	printf("%d", sizeof(check));
	return 0;
}

A. 2

B. 4

C. 20

D. None of the above

x

 

Option: C

Explanation

This Program is the union type program. We know the members of union will share the same memory location within the computer, whereas each structure member has its own memory location within the computer. At any time of compilation, only one member of the union can reside in that memory location. The union require bytes that are equal to the bytes required by largest member within union. The union allocates fixed bytes.

Answer


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