C Program to check number is perfect number or not

Published on September 13, 2017 by abundantcode

Filed under C

Last modified September 13, 2017

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Problem Statement

Write a program in C to find if the given number is a perfect number or not.

A number is said to be a perfect number if it is a positive number and when the sum of its divisors are equal to the number.

How to find if the number is a perfect number or not ?

#include<stdio.h>
int main()
{
     int number, sum=0, i=1;
     printf("Enter the Number\n");
     scanf("%d",&number);
 
     while(i<number)
     {
           if(number%i==0)
           {
               sum=sum+i;
           }
           i++;
     }
      if(sum==number)
           printf("\nThe number is a perfect number",i);
     else
          printf("\nThe number is not a perfect number",i);
     return 0;
}

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