java - 修复java逻辑错误，用户钱无论输赢都不减或加

Question

我想创建一个仅使用分支(if-else)、嵌套 while 循环和方法(简单函数和过程)的 java 骰子游戏。

代码运行良好，但是当涉及到结果时，确定用户有多少钱，它没有显示任何内容，它只显示默认的钱，即 100 那么如何修复它？非常感谢，我只是一个初学者，所以请不要问我的问题。这是我的代码:

public static void main(String[] args) {

            Scanner in = new Scanner(System.in);
            int umoney= 100;
            int lw;
            int roll1;
            int roll2;
            int bet ;
            System.out.println("You have "+ umoney+" dollars");
            while (umoney!=0) {
            bet = getBet(in, umoney);
            char user=getHighLow(in);
            roll1=getRoll();
            System.out.println("Die 1 rolls: "+roll1);
            roll2=getRoll();
            System.out.println("Die 2 rolls: "+roll2);
            System.out.println("Total of two diece is: " + (roll1+roll2));
            lw = determineWinnings(user, bet, (roll1+roll2));
            if (lw<0) {
                    System.out.println("You lost!");
            }
            else {
                    System.out.println("You won "+ lw+" dollars!");
                    umoney=umoney+lw;
            }
            }       
    }


    // Given a Scanner and a current maximum amount of money, prompt the user for
    // an integer representing the number of dollars that they want to bet.  This
    // number must be between 0 and to maximum number of dollars.  If the user enters
    // a number that is out of bounds, display an error message and ask again.
    // Return the bet to the calling program.
    private static int getBet(Scanner inScanner, int currentPool) {
            // Fill in the body
            System.out.println("Enter an amount to bet (0 to quit): ");
            int ubet= inScanner.nextInt();
            if (ubet==0) {
                    System.out.println("Goodbye!");
                    System.exit(0);
            }
            while (ubet<0 || ubet > currentPool) {
                    System.out.println("You must enter between 0 and "+ currentPool +" dollars");
                    System.out.println("You have "+ currentPool+" dollars");
                    System.out.println("Enter an amount to bet (0 to quit): ");
                    ubet=inScanner.nextInt();
                    if (ubet==0) {
                            System.out.println("Goodbye!");
                            System.exit(0);
                    }
            }      
            return ubet;
    }

    // Given a Scanner, prompt the user for a single character indicating whether they
    // would like to bet High ('H'), Low ('L') or Sevens ('S').  Your code should accept
    // either capital or lower case answers, but should display an error if the user attempts
    // to enter anything but one of these 3 values and prompt for a valid answer.
    // Return the character to the calling program.
    private static char getHighLow(Scanner inScanner) {
            // Fill in the body
            System.out.println("High, Low or Seven (H/L/S): ");
            char iuword= inScanner.next().charAt(0);
            while (iuword!='h' && iuword!='H' && iuword!='L' && iuword!='l' && iuword!='s' && iuword!='S') {
                    System.out.println("Invalid commad, Please enter again!");
                    System.out.println("High, Low or Seven (H/L/S): ");
                    iuword= inScanner.next().charAt(0);
            } return iuword;          
    }

    // Produce a random roll of a single six-sided die and return that value to the calling
    // program
    private static int getRoll() {

            int roll1 =(int)(6*Math.random())+1;               
            return roll1;
    }

    // Given the choice of high, low or sevens, the player's bet and the total result of
    // the roll of the dice, determine how much the player has won.  If the player loses
    // the bet then winnings should be negative.  If the player wins, the winnings should
    // be equal to the bet if the choice is High or Low and 4 times the bet if the choice
    // was Sevens.  Return the winnings to the calling program.
    private static int determineWinnings(char highLow, int bet, int roll) {


            int result;
            if (highLow=='H' || highLow=='h') {
                    if (roll<7) {
                            result =-1*bet;
                    }
                    else {
                            result=bet;
                    }
            }
            if (highLow=='L'|| highLow=='l') {
                    if (roll>7) {
                            result=-1*bet;
                    }
                    else {
                            result=bet;
                    }
            }
            if (highLow=='S' || highLow=='s') {
                    result =4*bet;
                    }
            else {

                    result = -1*bet;
            }
            return result;               
    }

Answer 1

代码有两个问题。

1. 行 umoney = umoney + lw 需要位于 if-else block 之后。您想要添加胜利和失败，而不仅仅是胜利:p
2. 您在确定获胜中错过了一个 if 条件 - highLow == 'S' 后面需要紧跟 if (roll == 7)