Question

Create a DigitsSum application that prompts the user for a non-negative integer and then displays the sum of the digits. ( Java Programming )

Answer 1

import java.util.Scanner;

public class DigitsSum {

    public static int sumOfDigits(int n) {
        int total = 0;
        while (n > 0) {
            total += (n % 10);
            n /= 10;
        }
        return total;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter a positive integer: ");
        int n = in.nextInt();
        System.out.println("Sum of digits of " + n + " is " + sumOfDigits(n));
    }
}