2020-06-26【分支语句switch】

image.png
image.png
image.png
image.png

public class SwitchDemo {
    public static void main(String[] args) {
        int to_day = 1;
        switch (to_day) {
            case 1:
                System.out.println("星期一");
                break;
            case 2:
                System.out.println("星期二");
                break;
            case 3:
                System.out.println("星期三");
                break;
            case 4:
                System.out.println("星期四");
                break;
            case 5:
                System.out.println("星期五");
                break;
            case 6:
                System.out.println("星期六");
                break;
            case 7:
                System.out.println("星期日");
                break;
            default:
                System.out.println("输入格式错误！");
        }
    }
}