C program to check that given number is perfect or not.

#include<stdio.h>

#include<conio.h>

int main(){

int n,i,sum=0;

clrscr();

printf("Enter an integer number\n");

scanf("%d",&n);

if (n>0){

for (i=1;i<n;i++) {

if (n%i==0) 

sum=sum+i;

}

if (n==sum) 

printf("%d is a perfect number.\n",n);

else 

printf("%d is not a perfect number.\n",n);

}

getch();

return 1;

}