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

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Memory Allocation

Memory Allocation - 1 Memory Allocation - 2
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C Data Types 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 data types 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 data types to make your MNC interview very easy.

Data Types Questions and Answers

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

#include<stdio.h>
int main()
{
	char num = '\010';
	printf("%d", num);
	return 0;
}

A. 010

B. 08

C. 10

D. 8

x

 

Option: D

Explanation

The value of a variable num is '\010'. Which means the character with value 10 in octal, which is 8 in decimal.

Answer


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

#include<stdio.h>
int main()
{
	void  num=10;
	printf("%v", num);
	return 0;
}

A. Compilation error

B. 10

C. Garbage value

D. 0

x

 

Option: A

Explanation

Void is not a valid data type for declaring variables.

Answer


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

#include<stdio.h>
int main()
{
	void *ptr;
	int  num = 10;
	ptr = &num;
	printf("%d", ptr);
	return 0;
}

A. 10

B. Compilation error

C. 0

D. Address

x

 

Option: D

Explanation

Though, void is not a valid data type for declaring variables. It is a valid for declaring pointer variable *ptr thus printf displays the address of a normal variable num

Answer


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

#include<stdio.h>
int main()
{
	printf("%d\t",sizeof(2.5));
	printf("%d\t",sizeof(2));
	printf("%d",sizeof('A'));
	return 0;
}

A. 8 4 2

B. 8 4 1

C. 4 4 1

D. 2.5 2 A

x

 

Option: B

Explanation

C compiler by default will assign any undeclared float data type as double. Thus 8 4 1 is outputted

Answer


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

#include<stdio.h>
int main(){
	signed a;
	unsigned b;
	a = 6u + -16 + 16u + -6;
	b = a + 1;
	if(a == b)
	printf("%d %d",a,b);
	else
	printf("%u %u",a, b);
	return 0;
}

A. Compilation error

B. 0 0

C. 0 1

D. address address

x

 

Option: C

Explanation

Clearly, a != b and it execute the else part, where we ask compiler to display the value of a and b.

Answer


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