Write a c program to check given number is perfect number or not.

/*Write a c program to check given number is perfect number or not.*/ #include <stdio.h> #include <conio.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 no %d is a perfect number",i);   else       printf("\nThe no %d is not a perfect number",i);   return 0; } /*   source:http://mycomputerscience.net    */

Definition of perfect number: Perfect number is a positive number which sum of all positive divisors excluding that number is equal to that number. For example 6 is perfect number since divisor of 6 are 1, 2 and 3.  Sum of its divisor is 1 + 2+ 3 =6 Note: 6 is the smallest perfect number. Next perfect number is 28 since 1+ 2 + 4 + 7 + 14 = 28 Some more perfect numbers: 496, 8128