//判断俩个值得大小
        Scanner in = new Scanner(System.in);
        int x;
        int y;
        System.out.println("请输入俩个比较值:");
        x = in.nextInt();
        y = in.nextInt();
        int max;
        if (x > y) {
            max = x;
        }
        else {
            max = y;
        }
        System.out.println("最大值:" + max);