#include<stdio.h>
main() 
{
int num,n,i,sum=0;
printf(" Please,Enter a number \(to check whether it is Perfect number or Not\) : ");
scanf("%d",&num);
n=num;
for(i=1;i<=(n-1);i++)
{
if(n%i==0) 
sum=sum+i;
}
if(sum==num)
printf("\n %d is a perfect number.",num);
else
printf("\n %d is not a perfect number.",num);

}