C Program to check whether a number is a Perfect Number or not

#include<stdio.h>
int main(){
  int n,i=1,sum=0;
  printf("\nEnter a number:-");
  scanf("%d",&n);
  while(i<n){
      if(n%i==0)
           sum=sum+i;
          i++;
  }
  if(sum==n)
printf("\nThe nnumber %d is a perfect number",i);
  else
      printf("\nThe number  %d is not a perfect number",i);
  return 0;
}