# Shiqianfeng JAVA classes against the war, March 21 #

On day 6 against the war Shiqianfeng classes;
Orly to dry on the bin;
today the self-study;
Chinese world refuel refueling!!
Own `Come on!

import java.util.Scanner;

public class Saturday{
	public static void main(String[]args){
		System.out.println("请输入一个数字:");
		Scanner sc = new Scanner(System.in);
		int num = sc.nextInt();
		switch(num){
			case 1:System.out.println("贝贝");break;
			case 2:System.out.println("晶晶");break;
			case 3:System.out.println("欢欢");break;
			case 4:System.out.println("迎迎");break;
			case 5:System.out.println("妮妮");break;
			default:System.out.println("北京欢迎您");
		}
		System.out.println(" ... over...");
		
		System.out.println("判断是不是闰年");
		System.out.println("请输入年份:");
		int year = sc.nextInt();
		if(year%400==0||year%4==0&&year%100!=0){
			System.out.println("是闰年");
		}else {
			System.out.println("不是闰年");
		}
		System.out.println(" ... over...");

		System.out.println("请输入你的年龄:");
		int age = sc.nextInt();
		if(age<0){
			System.out.println("输入有错");
		}else if (age <6){
			System.out.println("儿童");
		}else if (age<13){
			System.out.println("少儿");
		}else if (age<18){
			System.out.println("青少年");
		}else if (age<36){
			System.out.println("青年");
		}else if(age<50){
			System.out.println("中年");
		}else {
			System.out.println("中老年");
		}
		System.out.println(" ... over...");
		
		System.out.println("密码登录");
		System.out.println("用户名:");
		String user = sc.next();
		System.out.println("密码");
		String password = sc.next();
		switch(user){
			case "admin":{
				if ("123".equals(password)){
					System.out.println("可以登录");
				}else{
					System.out.println("登录失败");
				}
			}break;
			case "zhangsan":{
				if ("zhangsan123".equals(password)){
					System.out.println("可以登录");
				}else{
					System.out.println("登录失败");
				}
			}break;
			default:System.out.println("登录失败");
		}
		System.out.println("mian ... over...");
	}
}