Example: Strong Number or Not in C using For loop

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// Strong Number or Not in C using For loop
#include <stdio.h>

// It's the main function of the program
int main()
{
    int num, factorial, reminder, sum = 0;

    // Step-1 Take input from the User
    printf("INPUT A NUMBER: ");
    scanf("%d", &num);

    // Step-2 Check input number should be positive
    if (num > 0)
    {
        // Step-3 Use a loop to check the number
        for (int k = num; k > 0; k /= 10)
        {
            factorial = 1;
            reminder = k % 10;

            for (int i = 1; i <= reminder; i++)
                factorial = factorial * i;
            sum = sum + factorial;
        }

        // Step-4  Compare the value of the sum of digits with the original input value
        if (sum == num)
            printf("%d IS A STRONG NUMBER.\n", num);
        else
            printf("%d IS NOT A STRONG NUMBER.\n", num);
    }
    else
        printf("Enter a positive number!\n");

    return 0;
}