SCE

Write a C program to enter any number and check whether the number is Perfect number or not.

A perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself.

For example: 6 is the first perfect number

Proper divisors of 6 are 1, 2, 3

And 1+2+3 = 6.

**Code:**

#include<stdio.h> int main() { int num, i = 1, sum = 0; printf("Enter a number: "); scanf("%d", &num); while (i < num) { if (num % i == 0) { sum = sum + i; } i++; } if (sum == num) printf("%d is a Perfect Number", i); else printf("%d is Non Perfect Number", i); return 0; }