Java - 我正在编写我的第一个项目。这是二十一点，但我遇到了一些麻烦

Question

我是编程新手。我试图玩二十一点，但遇到了一些问题。

我的控制台输出:

Would you like to play again? y/n 
y
You have: $50
Whats your bet: 
12
You get a 7 and a 10
Your total is 17
The dealer has a 9 11 showing
Would you like to hit? y/n : 
n
The dealer has 20                            //Here it is supposed to say You lost blah blah blah 
Would you like to play again? y/n         //but its skipping to System.println("play again");

<小时/>

package loops;
import java.util.Scanner;
import java.util.Random;
public class loops {
    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);
        char hit = 0;
        char playAgain = 0;
        String dolphin = "banana";
        int c = 5;
        int win = 0;
        int[] cards = {2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,8,8,8,8,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11};
        int bet, money = 999999999, cardValue = 0, dealersValue = 0;
        if(money == 999999999){
            System.out.println("How much money would you like to start with?");
            money = reader.nextInt();
        }


        do {
            shuffleArray(cards);
            System.out.println("You have: $" + money);
            System.out.println("Whats your bet: ");
            bet = reader.nextInt();
            if(bet > money){
                System.out.println("You cannot bet over " + money + "!");
                System.exit(0);
                break;
            }


            System.out.println("You get a " + cards[0] + " and a " + cards[1]);
            cardValue = cards[0] + cards[1];
            System.out.println("Your total is " + cardValue);

            if(cardValue == 21){
                win = 1;
            }


            if(cardValue > 21){
                win = 2;
            }


            if(win != 2){

                int i = 9;
                System.out.println("The dealer has a " + cards[7] + " " + cards[8] + " showing");
                dealersValue = cards[7] + cards[8];
                System.out.println("Would you like to hit? y/n : ");
                hit = reader.next().charAt(0);
                while(dealersValue <= 17){
                    if(dealersValue <= 17){
                        dealersValue = cards[7] + cards[8] + cards[i];
                    }


                    if(dealersValue <= 17){
                        dealersValue = cards[7] + cards[8] + cards[i] + cards[i];
                    }   


                    if(dealersValue <= 17){
                        dealersValue = cards[7] + cards[8] + cards[i] + cards[i] + cards[i];
                    }

                    if(cards[i] > 11 && dealersValue > 21){
                        cards[i] = 1;
                    }
                    if(cards[7] > 11 && dealersValue > 21){
                        cards[7] = 1;
                    }
                    if(cards[8] > 11 && dealersValue > 21){
                        cards[8] = 1;
                    }

                    i++;
                }}


            while(hit == 'y'){
                System.out.println("You get a " + cards[c]);
                cardValue = cardValue + cards[c];
                System.out.println("Your total is " + cardValue);
                if(cardValue > 21){
                    if(cards[5] > 11 && cardValue > 21){
                        cards[5] = 1;
                        System.out.println("To avoid busting, you 11 changes to 1");
                    }

                    if(cards[6] > 11 && cardValue > 21){
                        cards[6] = 1;
                        System.out.println("To avoid busting, you 11 changes to 1");
                    }

                    if(cards[7] > 11 && cardValue > 21){
                        cards[7] = 1;
                        System.out.println("To avoid busting, you 11 changes to 1");
                    }

                    if(cards[8] > 11 && cardValue > 21){
                        cards[8] = 1;
                        System.out.println("To avoid busting, you 11 changes to 1");
                    }

                    if(cards[9] > 11 && cardValue > 21){
                        cards[9] = 1;
                        System.out.println("To avoid busting, you 11 changes to 1");
                    }

                    if(cardValue > 21){
                        break;
                    }
                }
                System.out.println("Would you like to hit? y/n : ");
                hit = reader.next().charAt(0); 
                c++;
                if(hit =='n'){
                    System.out.println("You stay!");
                    cardValue = cardValue + 0;
                    break;
                }
            }
            System.out.println("The dealer has " + dealersValue);

            if(dealersValue > 21){
                win = 1;
            }
            if(cardValue > 21){
                win = 2;
            }
            if(cardValue == 21){
                win = 1;
            }
            if(dealersValue == 21){
                win = 2;
            }
            if (dealersValue > cardValue && dealersValue > 21){
                win = 2;
            } 
            if (dealersValue == cardValue){
                win = 2;
            }
            if(dealersValue < cardValue && cardValue <=21) {
                win = 1;
            }
            if(dealersValue == 21 && dealersValue != cardValue || dealersValue == 21 && dealersValue == cardValue || cardValue > 21){
                win = 2;
            }
            if(cardValue == 21 && dealersValue  != cardValue || dealersValue > 21){
                win = 1;
            }
            if(win == 1){
                System.out.println("You won "+bet*1 + " dollars!");;
                System.out.println("Your total balance is " + money);
            }
            if(win == 2){
                System.out.println("You lost "+bet*1 + " dollars!");;
                System.out.println("Your total balance is " + money);
            }
            if(win == 3){
                System.out.println("You lost "+bet*1 + " dollars!");;
                System.out.println("Your total balance is " + money);
            }
            if(money <= 0){
                System.out.println("You are out of money!");
                System.exit(0);
            }
            System.out.println("Would you like to play again? y/n ");
            playAgain = reader.next().charAt(0);

            if(playAgain == 'n'){
                System.exit(0); }
            win = 0;

        } while (playAgain == 'y');
    }


    static void shuffleArray(int[] cards){
        Random rnd = new Random();
        for (int i = cards.length - 1; i > 0; i--)
        {
            int index = rnd.nextInt(i + 1);
            int a = cards[index];
            cards[index] = cards[i];
            cards[i] = a;
        }
    }
}

我多次梳理了代码，寻找出错的地方，比如可能是不应该出现的 } ，但我找不到任何东西。我认为它需要一些新鲜的眼光!在我让这段代码工作后，我计划使用面向对象的方法再次尝试。

Answer 1

设置变量“win”的 if 语句集不正确。

使用给定的示例浏览代码(庄家有 20 个，玩家有 17 个)，变量“win”从未设置，因此所有打印出“你输了”和“你赢了”的语句都被跳过。

很有可能在这一行

if (dealersValue > cardValue && dealersValue > 21){

你的意思是

dealersValue < 21

这将导致 win 设置为 2 并显示正确的输出。

调试提示:使用 IDE 浏览代码。如果您逐行执行，您应该立即看到它跳过设置“win”变量。

祝学习编程一切顺利!这很有趣，但很令人沮丧:)