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  • 第八上机练习~~~~~~~~~~~~~~~~~~~~~~~~~~~~武汉一定要加油!!!

    作业1:完善menu注册功能,抽奖,看小故事等功能

    package chap3;
    
    import java.util.Random;
    import java.util.Scanner;
    
    public class abc {
    
        public static void main(String[] args) {
            mainMenu();
        }
    
        public static void mainMenu() {
            Scanner input = new Scanner(System.in);
            System.out.println("1.登录");
            System.out.println("2.注册");
            System.out.println("3.幸运抽奖,输入四位会员卡号,如果百位等于系统随机数,就是星运会员.否则不是.");
            System.out.println("4.看电影欢乐不停");
            System.out.println("5.退出系统");
            System.out.println("请选择");
            int i = input.nextInt();
            switch (i) {
            case 1:
                login();
                break;
            case 2:
                zhuce();
                break;
            case 3:
                choujiang();
                break;
            case 4:
                kandianying();
                break;
            case 5:
                tuichu();
                break;
            }
        }
    
        private static void login() {
            // TODO Auto-generated method stub
            Scanner input = new Scanner(System.in);
            System.out.println("输入用户名");
            String uname = input.next();
            System.out.println("输入密码");
            String upwd = input.next();
            if (uname.equals("zs") && upwd.equals("123")) {
                System.out.println("登录成功");
            } else {
                System.out.println("登录失败");
            }
            returnMain();
    
        }
    
        public static void returnMain() {
            System.out.println("是否返回主菜单?Y/N");
            Scanner input = new Scanner(System.in);
            if (input.next().equalsIgnoreCase("Y")) {
                mainMenu();
            } else {
                System.out.println("谢谢使用");
            }
    
        }
    
        public static void zhuce() {
            Scanner input = new Scanner(System.in);
            System.out.println("输入用户名");
            String uname = input.next();
            System.out.println("输入密码");
            String upwd = input.next();
            if (uname.equals("zs") && upwd.equals("123")) {
                System.out.println("注册失败");
            } else {
                System.out.println("注册成功");
            }
            returnMain();
        }
    
        public static void choujiang() {
            Scanner input = new Scanner(System.in);
            System.out.println("输入你的会员号");
            int i = input.nextInt();
            Random r = new Random();
            int j = r.nextInt(10);
            if (i / 100 % 10 == 4) {
                System.out.println("恭喜你获得奖品");
            } else {
                System.out.println("非常遗憾,你没有中奖");
            }
            returnMain();
        }
    
        public static void kandianying() {
            Scanner input = new Scanner(System.in);
            System.out.println("请选择你要看的电影名字:");
            System.out.println("1.小猪佩奇");
            System.out.println("2.荣哥真帅");
            int b = input.nextInt();
            switch (b) {
            case 1:
                System.out.println("小猪佩奇真好看,即将为你播放");
                break;
            case 2:
                System.out.println("荣哥真帅真男人,即将为你播放");
                break;
            }
            returnMain();
        }
    
        public static void tuichu() {
            System.out.println("谢谢使用,欢迎你下次光临");
        }
    }

     2.编写一个方法,求整数n的阶乘,例如5的阶乘是1*2*3*4*5。 [必做题]

    package chap3;
    
    import java.util.Scanner;
    
    public class Person {
        public static int jc(int x) {
            int sum = 1;
            for (int i = 1; i <= x; i++) {
                sum *= i;
            }
            return sum;
        }
    
        public static void main(String[] args) {
            Scanner input = new Scanner(System.in);
            System.out.println("输入一个数:");
            int a = input.nextInt();
            System.out.println(a + "的阶层为" + jc(a));
        }
    }

     3.编写一个方法,判断该年份是平年还是闰年。[必做题]

    package chap3;
    
    import java.util.Scanner;
    
    public class Person {
        public static void nian(int year) {
            if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
                System.out.println("该年是闰年");
            } else {
                System.out.println("该年不是闰年");
            }
        }
    
        public static void main(String[] args) {
            Scanner input = new Scanner(System.in);
            System.out.println("输入一个年份:");
            int a = input.nextInt();
            nian(a);
        }
    }

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  • 原文地址:https://www.cnblogs.com/skyfail/p/12778942.html
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