第八次上机作业 

  1 package choujiang;
  2 
  3 import java.util.Random;
  4 import java.util.*;
  5 
  6 public class Menu {
  7 
  8     public static void main(String[] args) {
  9         // TODO Auto-generated method stub
 10             mainMenu();
 11             
 12     }
 13 
 14     private static void mainMenu() {
 15         // TODO Auto-generated method stub
 16         Scanner input = new Scanner(System.in);
 17         System.out.println("1：登录");
 18         System.out.println("2：注册");
 19         System.out.println("3：幸运抽奖");
 20         System.out.println("4：小故事");
 21         System.out.println("5：退出系统");
 22         System.out.println("6：选择");
 23         int i = input.nextInt();
 24         switch (i) {
 25         case 1:
 26             logIn();
 27             break;
 28         case 2:
 29             register();
 30             break;
 31         case 3:
 32             luck();
 33             break;
 34         case 4:
 35             story();
 36             break;
 37         case 5:
 38             back();
 39             break;
 40         default:
 41             break;
 42         }
 43     }
 44 
 45     private static void back() {
 46         // TODO Auto-generated method stub
 47         System.out.println("over");
 48     }
 49 
 50     private static void story() {
 51         // TODO Auto-generated method stub
 52         Scanner input = new Scanner(System.in);
 53         System.out.println("1:农夫与蛇");
 54         System.out.println("2:小红帽");
 55         System.out.println("3:三只小猪");
 56         System.out.println("选择");
 57          int a = input.nextInt();
 58          switch (a) {
 59         case 1:
 60             wolf();
 61             break;
 62         case 2:
 63             snake();
 64             break;
 65         default:
 66             pig();
 67             break;
 68         }
 69          mainMenu();
 70     }
 71 
 72     
 73 
 74     private static void pig() {
 75         // TODO Auto-generated method stub
 76         System.out.println("1");
 77         backMain();
 78     }
 79 
 80     private static void snake() {
 81         // TODO Auto-generated method stub
 82         System.out.println("2");
 83         backMain();
 84     }
 85 
 86     private static void wolf() {
 87         // TODO Auto-generated method stub
 88         System.out.println("3");
 89         backMain();
 90     }
 91 
 92     private static void luck() {
 93         // TODO Auto-generated method stub
 94         Scanner input = new Scanner(System.in);
 95         System.out.println("输入4个数字");
 96          int a = input.nextInt();
 97          Random r = new Random();
 98          int i = r.nextInt(9);
 99          int k = r.nextInt(9);
100          int q,s;
101          q=a/1000;
102          s=a%100/10;
103          if(q==i&&s==k) {
104             System.out.println("恭喜您中奖了!");
105         }
106          else{
107              System.out.println("谢谢惠顾！");
108          }
109          mainMenu();
110     }
111 
112     private static void register() {
113         // TODO Auto-generated method stub
114         Scanner input = new Scanner(System.in);
115         System.out.println("输入姓名");
116         String uname = input.nextInt();
117         Scanner input = new Scanner(System.in);
118         System.out.println("输入性别");
119         char sex= input.nextInt();
120         System.out.println("输入年龄");
121         int  age= input.nextInt();
122         System.out.println("输入密码");
123         long a = input.nextInt();
124         System.out.println("注册成功");
125         mainMenu();
126     }
127 
128     private static void logIn() {
129         // TODO Auto-generated method stub
130         Scanner input = new Scanner(System.in);
131         System.out.println("输入姓名");
132         String uname = input.nextInt();
133         System.out.println("输入密码");
134         String a = input.nextInt();
135         if (uname.equals("xxl")&&a.equals(123456)) {
136             System.out.println("登录成功");
137         }
138         else{
139             System.out.println("登陆失败");
140         }
141         backMain();
142     }
143 
144     private static void backMain() {
145         // TODO Auto-generated method stub
146         Scanner input = new Scanner(System.in);
147         System.out.println("是否返回主菜单");
148         int i=input.nextInt();
149         if (input.next().equalsIgnoreCase("Y")) {
150             mainMenu();
151         }
152         else{
153             System.out.println("谢谢使用");
154         }
155     }
156 
157 }

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。

 1 package text5;
 2 
 3 import java.util.*;
 4 
 5 public class test {
 6 
 7     public static void main(String[] args) {
 8         // TODO Auto-generated method stub
 9         Scanner Input = new Scanner(System.in);
10         System.out.println("请输入一个数");
11         int a = Input.nextInt();
12         int jc = 1;
13         for (int i = 1; i <= a; i++) {
14             jc * = i;
15         }
16         System.out.println("其阶乘为：" + jc);
17     }
18 
19 }

3.编写一个方法，判断该年份是平年还是闰年。

 1 package text5;
 2 
 3 import java.util.Scanner;
 4 
 5 public class Years {
 6 
 7     public static void main(String[] args) {
 8         // TODO Auto-generated method stub
 9         Years();
10     }
11 
12     public static void Years() {
13         Scanner input = new Scanner(System.in);
14         System.out.println("请输入年数:");
15         int year = input.nextInt();
16         if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
17             System.out.println("该年份为闰年");
18         } else {
19             System.out.println("该年份为平年");
20         }
21     }
22 }

 

posted @ 2020-04-30 09:17  就这水平？  阅读(115)  评论(0)  编辑  收藏  举报