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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;
}
x
Option: B
Explanation
The switch(++si - si++) which becomes switch(2 - 2) -> switch(0) so default block gets executed.
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;
}
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.
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.
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;
}
x
Option: A
Explanation
We can access the pointer string, character by character.
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;
}
x
Option: C
Explanation
Compiler Error: Constant expression required
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