While loop

      Write a Program in Java to input a number and check whether it is a Harshad Number or Niven Number or not.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 18, 20, 21, 24, 27, 30, 36, 40, 42, 45, 48, 50

import java.util.*;

class HarshadNumber {   public static void main(String args[])

    {  Scanner sc = new Scanner(System.in);  

        System.out.print("Enter a number : ");

        int n = sc.nextInt();

        int c = n, d, sum = 0;

        //finding sum of digits

        while (c>0)

        {  d = c%10;  sum = sum + d;

            c = c/10;}

    if(n%sum == 0)

System.out.println(n+" is a Harshad Number.");

       else

   System.out.println(n+" is not a Harshad Number.");     

    }