PERFECT NUMBER PROGRAM IN C

PERFECT NUMBER :  

PERFECT NUMBER IS A POSITIVE NUMBER WHOSE SUM OF ALL POSITIVE DIVISORS EXCLUDING THAT NUMBER IS EQUAL TO THAT NUMBER

FOR EXAMPLE : 6 IS A PERFECT NUMBER SINCE DIVISOR OF 6 ARE 1,2,3. SUM OF ITS DIVISORS IS 1+ 2 + 3 = 6

FOR EXAMPLE : 28 IS A PERFECT NUMBER SINCE DIVISOR OF 28 ARE 1,2,4,7,14. SUM OF ITS DIVISORS IS 1+ 2 + 4 + 7 + 14 = 28

FOR EXAMPLE : 496 IS A PERFECT NUMBER  

FOR EXAMPLE : 8128 IS A PERFECT NUMBER 

PROGRAM:

// program to illustrate perfect number
#include<stdio.h>
void main()
{
 int n,i=1,sum=0,temp;
 printf("Enter any number:");
 scanf("%d",&n);
 temp=n;
 while (i < n)
  {
   if( n % i == 0 )
     sum =sum + i;
   i++;
  }
 if (sum == temp)
   printf("%d is a perfect number",temp);
 else
   printf("%d is not a perfect number",temp);
}

output: