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 Structures 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 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 Interview Questions and Answers

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

#include<stdio.h>
int main()
{
	enum numbers{num1, num2 = 0, num3, num4, num5, num6}n;
	printf("%d\n", sizeof(n));
}

A. 12

B. 4

C. 2

D. None of the above

x

 

Option: C

Explanation

The size of enum is not the influence of the values in the enumeration. Enum can store integer values. So, the size of enum is also equal to the size of int. Rarely, the size of enum may differ between compilers.

Answer


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

#include<stdio.h>
int main()
{
	enum week{sun = -1, mon, tue, wed, thu = 5, fri, sat};
	printf("%d %d %d %d %d %d %d", sun, mon, tue, wed, thu, fri, sat);
	return 0;
}

A. -1 0 1 2 3 4 5

B. -1 0 1 2 5 6 7

C. 1 2 3 4 5 6 7

D. Compilation Error

x

 

Option: B

Explanation

Enumeration accepts both positive and negative integer constants.

Answer


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

#include<stdio.h>
int main()
{
	struct alphabets
	{
		char firstLetter;
		struct alphabets a;
	}al;
	al.firstLetter = 'a';
	printf("%c", al.firstLetter);
}

A. a

B. Linker Error

C. Runtime Error

D. Compilation Error

x

 

Option: D

Explanation

Undefined Structure 'alphabets'
We can't declare structure members within the same structure.

Answer


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

#include<stdio.h>
int main()
{
	struct check
	{
	}ck;
	printf("%d", sizeof(ck));
}

A. 0

B. 1

C. 2

D. Compilation Error

E. None

x

 

Option: B

Explanation

The size of an empty structure that without having any members will occupies 1 byte.

Answer


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

#include<stdio.h>
int main()
{
	struct check
	{
	int i:0;
	}ck;
	printf("%d", sizeof(ck));
}

A. 0

B. 2

C. Compilation Error

D. 4

x

 

Option: C

Explanation

Bit fields should be greater than 0. As the same for array, array element must have greater than 0 elements. If you declare array like this arr[0] will show you the error message.

Answer


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