C Program to Check a Number is Perfect or Not

Program :-

#include <stdio.h>
main(){
    int i, num ,sum = 0;
    printf("enter the number : ");
    scanf("%d",&num);
    for(i = 1 ; i <= num /2 ; i++)
    {
        if(n % i == 0){
            sum = sum + i;
        }
     }
     if ( sum == num)
         printf("\n number is perfect");
     else
         printf("\n number is not perfect");
 }

Output:-

enter the number
6
number is perfect