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C Switch Case 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 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

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

#include<stdio.h>
int main(){
int num = 0;
if (num++, num--, ++num)
	switch(num)
	{
		case 1:
		printf("case one");
		break;
		case 2:
		printf("case two");
		break;
		default:
		printf("default block");
		break;
	}
   return 0;
}

A.case one✔

B.case two✘

C.default block✘

D.Compile Time Error✘

x

Option: A

Explanation

The if block gets executed because the expression will returns 1 and the value of num is 1 so case 1: block gets executed.

✉ Answer

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

#include<stdio.h>
int main(){
int num = 5;
switch(num++ == 5)
{
	case 1:
	printf("TRUE");
	break;
	case 0:
	printf("FALSE");
	break;
	default:
	printf("inside default");
}
   return 0;
}

A. inside default✘

B. FALSE✘

C. TRUE✔

D. Compilation Error✘

x

Option: C

Explanation

The expression returns true because the values are equal inside if statement. i.e) if(5 == 5).

✉ Answer

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

#include<stdio.h>
int main(){
switch(1)
{
	case 1:
	printf("inside case 1 ");
	break;
	printf("Hai");
	default:
	printf("inside default");
	break;
}
   return 0;
}

A. inside default✘

B. Hai✘

C. inside case 1 Hai✘

D. inside case 1✔

x

Option: D

Explanation

It will execute statements between break and case. The statements outside case and default will be unreachable code.

✉ Answer

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

#include<stdio.h>
int main(){
char ch = 96.0;
switch(ch)
{
	case 96:
    printf("inside case");
	break;
    default:
    printf("inside default");
}
return 0;
}

A. inside case✔

B. inside default✘

C. Prints Nothing✘

D. Compilation Error✘

x

Option: A

Explanation

Sorry. No Explanation.

✉ Answer

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

#include<stdio.h>
int main(){
int i = 3, j = 4;
switch(i | j)
{
	case 1:
	printf("inside case 1");
	break;
	case 3:
	printf("inside case 3");
	break;
	case 4:
	printf("inside case 4");
	break;
	case 7:
	printf("inside case 7");
	break;
}
return 0;
}