What's the wrong in this code ?

Question

#include<stdio.h>
int main()
{
int roll;
printf("Welcome To This Page");
printf("\n enter the roll number = ");
scanf("%d",&roll);
switch(roll)
{
case'1':
printf("Name = Abhishek kumar Roll no =1 branch= CS");
break;
case'2':
printf("Name = Abhinav Raj roll no = 2 Branch Cs");
break;
case'3':
printf("Name = Atul kumar Rol number = 3 Branch = cs");
break;
default:
printf("Something went wrong");
}
return 0;
}

Answer 1

roll is of type int but your cases are of type char. They will only be triggered when roll matches their ascii values: '1' = 49, '2' = 50, '3' = 51, etc.
Remove the single quotes or declare roll as char and it will work.

Answer 2

Thanks