Example: HARSHAD Number or Not in C using Function

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// HARSHAD Number or Not in C using Function
#include <stdio.h>

// Function to check the Harshad number
int is_harshad_number(int number)
{
    int sum = 0;
    int original = number; // Store the input value in another variable

    while (original != 0)
    {
        sum += original % 10;
        original /= 10;
    }

    // If the condition is true It will return '1' otherwise return '0'
    return number % sum == 0;
}

// It's the main function of the program
int main()
{
    int num;

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

    // Step-2 Call the is_harshad_number(); function to check the Harshad number
    if (is_harshad_number(num))
        printf("\n%d IS A HARSHAD NUMBER\n", num);
    else
        printf("\n%d IS NOT A HARSHAD NUMBER\n", num);

    return 0;
}