The ones who are crazy enough to think they can change the world are the ones who do.

- Steve Jobs

C Switch Case 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 Switch Case 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 Switch Case to make your MNC interview very easy.

C Switch Case Questions

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

#include<stdio.h>
int main()
{
	short int si = 1;
	switch(++si - si++)
	{
		case 1L:
		printf("First");
		break;
		case 2L:
		printf("Second");
		break;
		default:
		printf("Bye");
		break;
	}
	
return 0;
}

A. First✘

B. Bye✔

C. Second✘

D. Compilation Error✘

x

Option: B

Explanation

The switch(++si - si++) which becomes switch(2 - 2) -> switch(0) so default block gets executed.

✉ Answer

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

#include<stdio.h>
int main()
{
int i = 1;
for(i = 0; i<10; i+3)
	switch(i)
	{
		
		case 3:
		printf("Hai. This is case 3");
		break;
		case 6:
		printf("Hai. This is case 6");
		break;
		break;
		default: 
		printf("Hai. This is default");
		break;
	}
	
return 0;
}

A. Hai. This is case 3✘

B. Hai. This is case 6✘

C. Infinite Execution✔

D. Hai. This is default✘

x

Option: C

Explanation

The for loop don't have a proper incrementation control. We don't have any other control to stop, so it goes infinite. There is extra break statement but it it is unreachable code.

✉ Answer

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

#include<stdio.h>
int main(){
char ch = '\0';
switch(ch)
{
	case NULL:
	printf("Empty \0");
	break;
	case ' ':
	printf("Empty Empty");
	break;
	case '0':
	printf("Empty 0");
	break;
	default:
	printf("Nothing");
}
return 0;
}

x

Option: D

Explanation

NULL = '\0'. So it executes case NULL: block. The printf statement should be like this printf("Empty \\0"); to print Empty \0.

✉ Answer

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

#include<stdio.h>
int main(){
char *str = "ABCD";
switch(*str + 2)
{
	case 'A':
	printf("Apple");
	break;
	case 'B':
	printf("BOOK");
	break;
	case 'C':
	printf("CLOUD");
	break;
	case 'D':
	printf("DELL");
	break;
}
return 0;
}

A. CLOUD✔

B. BOOK✘

C. APPLE✘

D. Compilation Error✘

x

Option: A

Explanation

We can access the pointer string, character by character.

✉ Answer

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

#include<stdio.h>
int main()
{
switch(25)
{
	case 25L:
	printf("25L");
	break;
	case 25.0:
	printf("25.0");
	break;
	default:
	printf("Nothing");
	break;
}
return 0;
}

A. 25L✘

B. 25.0✘

C. Compilation Error✔

D. Nothing✘