add c program to check for perfect numbers

Author: archu5

programs/C/perfe.c

@@ -0,0 +1,18 @@
+#include<stdio.h>
+
+int main()
+         {
+           int sum = 0, n;
+           //prompt user for number to check whether it is perfect or not
+           printf("please enter number to check whether it is perfect or not:");
+           scanf("%d", &n);
+           for( int i = 1; i <= n/2; i++){
+                    if( n%i == 0)  //find sum of divisors of entered number
+                           sum += i;
+          }
+           //check if sum of divisors is equal to entered number or not and then print required output
+           if( sum == n)
+                 printf("hurray!,entered number is perfect\n");
+           else
+                 printf("number is not perfect, try another one\n");
+          }