What is wrong with this C program?

Question

I wrote the following C program to find whether a no. is perfect no.
but when i run it the compiler crashes and gives msg as test.exe has stopped working. test.c is my file name btw. why?
my code:-

void perfect(int x);
int main()
{
int x;
scanf("%d",&x);
perfect(x);

return 0;
}
void perfect(int x)
{
int i,s=0;
for(i=0;i<x;i++)
{
int r=x%i;
if(r==0)
s+=i;
}
if(s==x)
printf("Number is perfect");
else
printf("Number not perfect");

}

Answer 1

I found it ! You did r % i when i == 0, which is a runtime error

Answer 2

000.damn. thanks

Answer 3

i have typed that in compiler. here i just posted the main code.

Answer 4

There should be a
#include <stdio.h>
but without it, it shouldn't even compile so I guess you just forget to copy past it :/