HcfofNumbers.c

#include <stdio.h>

int main()
{
    int num1, num2, hcf;
    printf("Enter the two numbers : ");
    scanf("%d", &num1);
    scanf("%d", &num2);

    if (num1 < 0)
    {
        num1 = num1 * (-1);
    }

    if (num2 < 0)
    {
        num2 = num2 * (-1);
    }

    if (num1 == 0 && num2 == 0)
    {
        printf("The HCF of the two given number is undefined\n");
    }

    else if (num1 == 0 && num2 != 0)
    {
        printf("The HCF of the two given number is %d\n", num2);
    }

    else if (num1 != 0 && num2 == 0)
    {
        printf("The HCF of the two given number is %d\n", num1);
    }

    else
    {
        for (int i = 1; i <= num1; i++)
        {
            if (num1 % i == 0 && num2 % i == 0)
            {
                hcf = i;
            }
        }

        printf("The HCF of the two given number is : %d\n", hcf);
        return 0;
    }
}