C Program Language (Perfect Numbers)

In this program you will be told on how to sold problem in C program language which the perfect and not perfect numbers. See the screen example below.

After you've seen the expected output i will show you the codes on how to get the c program perfect numbers. Check out the codes.

#include<stdio.h>
#include<conio.h>

long perfectNum(long num);

int main()
{
    int limit, c = 0;
    long num;
        printf("Enter how many counts: ");
        scanf("%d", &limit);
                
            for( c = 1; c <= limit; c++ ){
                printf("\nEnter Numbers: ");
                scanf("%d", &num);
                    if( num <= 0 )
                        return 0;
                    if( perfectNum(num) )
                        printf("Perfect\n");
                    else
                        printf("Not Perfect\n");
            }
                    
    getch();
}

long perfectNum(long num)
{
    int a = 0;
    long sum = 0;
    
        for( a = 1; a < num; a++ ){
            if( num % a == 0 )
                sum += a;
        }
            if( sum > num || sum < num )
                return 0;
        return 1;
}

Perhaps you are wandering why 6, 496 and 28 are perfect numbers. So the given example below will tell us why it is called a perfect number.

6 = 1 + 2 + 3

28 = 1 + 2 + 4 + 7 + 14

496 = 1 + 2 + 4 + 8 + 16 + 31 + 62 + 124 + 248

Thanks for reading this post. :)