第二章编程练习题2.6

import java.util.Scanner;

public class Main5 {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int number = input.nextInt();
        int last = number % 10;
        int shengxia = number/10;
        int second = shengxia%10;
        shengxia = shengxia/10;
        int third = shengxia %10;
        int sum = last + second+third;
        System.out.println(sum);
    }

}