Write A Program In c To Check Whether A Number is a Perfect number or not.

#include<stdio.h>
int main()
{
int i,n,sum=0;
printf("Enter a number\n");
scanf("%d",&n);
for(i=1;i<n;i++)
{
if(n%i==0)
{
sum=sum+i;
}
}
if(sum==n)
{
printf("perfect number");
}
else
{
printf("Not a perfect number");
}
return 0;
}