题解 | #加法模拟器#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        //对齐输出的 ------- 7个横线
        int a = in.nextInt();
        int b = in.nextInt();
        System.out.println(a + "+" + b + "=" + (a + b));
        System.out.printf("%7d\n",a);
        System.out.printf("+%6d\n",b);
        System.out.printf("-------\n");
        System.out.printf("%7d",a + b);  
    }
}