java小程式之——幸運抽獎
阿新 • • 發佈:2019-02-11
使用者登入
使用者註冊
使用者抽獎
程式碼如下:
import java.util.Scanner;
public class Luck{
public static void main(String[] args){
@SuppressWarnings("resource")
Scanner input = new Scanner(System.in);
String continueChoice = "n";
String userNamer = "";
String password = "";
int cardNumber = 0000;
int max = 9999 ;
int min = 1000;
boolean isRegister = false;
boolean isLogin = false;
do{
System.out.println("\n*****歡迎進入獎客富翁系統*****");
System.out.println("\t 1.註冊");
System.out.println("\t 2.登陸");
System.out.println("\t 3.抽獎");
System.out.println("******************************\n");
System.out .print("請選擇選單:");
int menChoice = input.nextInt();
switch(menChoice){
case 1:
System.out.println("[獎客富翁系統>註冊]");
System.out.println("請填寫個人註冊資訊");
System.out.print("使用者名稱:");
userNamer = input.next();
System.out.print("密碼:");
password = input.next();
System.out .println(" ");
cardNumber = (int)(Math.random()*(max - min))+min;
System.out.println("註冊成功,請記好您的會員卡號");
System.out.println("使用者名稱\t"+"密碼\t"+"會員卡號\t");
System.out.println(userNamer+"\t"+password+"\t"+cardNumber);
isRegister = true;
break;
case 2:
System.out.println("[獎客富翁系統>登陸]");
if(isRegister){
for(int i=1;i<=3;i++){
System.out.print("請輸入使用者名稱:");
String inputUserNamer = input.next();
System.out.print("請輸入密碼:");
String inputPassWord = input.next();
if(userNamer.equals(inputUserNamer)&&password.equals(inputPassWord)){
System.out.println("歡迎您:"+inputUserNamer);
isLogin = true;
break;
}else if(i<3){
System.out.println("使用者名稱或者密碼錯誤,還有"+(3-i)+"機會"+"\n");
}else{
System.out.println("您3次均輸入錯誤");
}
}
}else{
System.out.println("請先註冊,再登陸");
}
break;
case 3:
System.out.println("[獎客富翁系統>抽獎]");
if(isLogin){
int[] luckyNums = new int[10];
for(int i=0;i<luckyNums.length;i++){
luckyNums[i] = (int)(Math.random()*(max-min))+min;
}
System.out.print("請輸入你的卡號:");
int youCard = input.nextInt();
int i = 0;
System.out.print("\n本日的幸運數字為:");
for(i=0;i<luckyNums.length;i++){
System.out.print(luckyNums[i]+" ");
}
for(i=0;i<luckyNums.length;i++){
if(luckyNums[i]==youCard){
System.out.println("\n恭喜!您是本日的幸運會員!");
break;
}
}
if(i==luckyNums.length){
System.out.println("\n抱歉!您不是本日的幸運會員!");
}
}else{
System.out.println("請先登入,再抽獎!");
System.out.println("繼續嗎?(y/n)");
continueChoice = input.next();
}
break;
default:
System.out.println("您的輸入有誤");
break;
}
System.out.print("繼續嗎?(y/n):");
continueChoice = input.next();
}while("y".equals(continueChoice));
if("n".equals(continueChoice)){
System.out.println("系統退出,謝謝使用!");
}
}
}