сумма

import java.util.Scanner;

public class Test10 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Input number: ");
        int i = scanner.nextInt();
        int s = 0;
        while (i != 0) {
            s += i % 10;
            i /= 10;
        }
        System.out.println(s + i);
    }
}