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  • switch && if...else

    /*导包
        1:手动导包:import java.util.Scanner;
        2:快捷键:alt+enter
        3:自动导包:Scann+回车
     */
    
    
    //switch 循环
    
    import java.util.Scanner;
    
    public class Test02 {
        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
    
            System.out.println("请输入一个星期数: ");
            int week = sc.nextInt();
    
            switch (week) {
                case 1:
                    System.out.println("跑步");
                    break;
                case 2:
                    System.out.println("游泳");
                    break;
                case 3:
                    System.out.println("拳击");
                    break;
                case 4:
                    System.out.println("动感单车");
                    break;
                case 5:
                    System.out.println("爬山");
                    break;
                case 6:
                    System.out.println("好好吃一顿");
                    break;
                case 7:
                    System.out.println("慢步");
                    break;
                default:
                    System.out.println("你输入的星期数有误。");
    
            }
        }
    }
    
    
    //if...else 语句
    import java.util.Scanner;
    
    public class Test01 {
        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            System.out.println("请输入一个星期数: ");
            int week = sc.nextInt();
    
            if (week < 1 || week > 7) {
                System.out.println("你输入的星期数有误");
            } else if (week == 1) {
                System.out.println("跑步");
            } else if (week == 2) {
                System.out.println("游泳");
            } else if (week == 3) {
                System.out.println("慢走");
            } else if (week == 4) {
                System.out.println("动感单车");
            } else if (week == 5) {
                System.out.println("拳击");
            } else if (week == 6) {
                System.out.println("爬山");
            } else {
                System.out.println("好好吃一顿");
            }
        }
    }
    

      

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  • 原文地址:https://www.cnblogs.com/walkersss/p/14928332.html
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