尝试在while循环重复时保持新的期末余额

Question

我必须创建一个游戏，提示用户投入一个起始余额，然后下赌注。然后他们的输赢和他们的余额相应地增加或减少。我的问题是，我不知道如果玩家想重新玩，在while循环中重新开始之前，如何让程序记住最后的平衡。当提示用户时，我的余额将保持为最初输入的第一个余额。如果这是一个重复，我很抱歉，但我找不到这样的问题，我已经搜索了一个多小时。提前道谢。

import static java.lang.Math.*;
import java.util.Scanner;
public class BetGame
{
    public static void main(String [] args)
    {
        Scanner in = new Scanner(System.in);

        int die1, die2;

        boolean looping = true;

        System.out.println("Please enter your starting balance in whole dollars:");          
        double balance = in.nextDouble();
        System.out.println("Your beginning balance is " + balance + ", good luck!!");
        int guess = 0;
        double bet2 = 0;
        double endingBalance = 0;
        while(looping) {
            while (guess < 3) {//to allow the user to do this only 3 times    
                System.out.println("Enter a valid bet:");
                double bet = in.nextDouble();
                if (bet >= balance || bet >= endingBalance){
                    System.out.println("That is more than your balance.");
                } 
                else if (bet < balance || bet < endingBalance) {                
                    bet2 = 0 + bet;
                    break;
                }
                guess++;
                if (guess == 3) {
                    looping = false;
                    System.out.println("You have entered three invalid bets in a row. Please leave the casino.");  
                }
            }           

            die1 = RollDie();
            die2 = RollDie();
            int sum = die1 + die2;

            if (2 <= sum && sum <= 6) {                
                System.out.println("The roll is " + die1 + " and " + die2 + " for a " + sum + " for a win!");
                endingBalance = balance + bet2;
            }
            else if (7 <= sum && sum <= 12) {
                System.out.println("The roll is " + die1 + " and " + die2 + " for a " + sum + " for a lose!");
                endingBalance = balance - bet2;
            }
            System.out.println("Your balance is " + endingBalance);
            System.out.println("Do you want to roll again?");
            String answer = in.next();
            if ((answer.equals("n")) || (answer.equals("N"))) {
                looping = false;
            }
        }
        System.out.println("Your balance is " + endingBalance + ". Better luck next time! Have a wonderful evening!");
    }            

    static int RollDie()
    {
        int min = 1;
        int max = 6;

        return myRandomInteger(min, max);
    }

    static int myRandomInteger(int min, int max)
    {
        double range = max - min + 1.0;
        int randomNum = (int)(range * Math.random()) + min;

        return randomNum;
    }

}

Answer 1

看一下这部分代码：

if (bet >= balance || bet >= endingBalance){
                System.out.println("That is more than your balance.");
} 

bet将始终大于EndingBalance，因为EndingBalance为0。

Answer 2

您可以将余额存储在变量中

    double balance = in.nextDouble();
    double originalBalance = balance;