Perfect Number program in C

Perfect Number : Sum of factors (except itself) is equals to same number

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