java - 如何在加法器游戏中检查第三个变量(ans)？

Question

好吧，我整整 48 小时都在思考这个问题 :(

添加游戏假设给出 2 个随机数(将它们相加)，跟踪正确回答所需的尝试次数，并根据最多 4 次的尝试次数给予分数，在 4 次尝试时数字重置为零点，它会告诉您答案，然后再生成 2 个数字。在任何时候，如果您的猜测包括 99，游戏就会结束。不使用 for 或 do while 包括 break;。

如何让它在 ans == 99 时停止？

import java.util.Scanner;
import java.lang.Math;

public class AdderGame {
    public static void main (String [] args){
        int ans = 0;
        int tries;
        int score = 0;

        Player one = new Player (0 , 0);
        while (ans != 99) {
            tries = one.getTry();
            ans = one.getAns();

            switch (tries) {
            case 1: score += 5; break;
            case 2: score +=3; break;
            case 3: score += 1; break;
            case 4: score += 0;
            System.out.print("The right answer is "); break;
            }
        }
        System.out.print("Your Score is " + score);
    }
}


import java.lang.Math;
import java.util.Scanner;

public class Player {
    int ran1, ran2;
    int tries = 1;
    int answer;
    int guess;

    public Player(int trys, int ans) {
        tries = trys;
        answer = ans;
    }

    public int getTry() m{
        Scanner input = new Scanner(System.in);
        ran1 = (int) (19 * Math.random());
        ran2 = (int) (19 * Math.random());
        answer = ran1 + ran2;

        do {
            System.out.print(ran1 + " + " + ran2 + ": ");
            guess = input.nextInt();
            if (guess == answer) {
                return (tries);
            } else {
                tries += 1;
            }
        } while (tries <= 4 && answer != guess || guess != 99);
        return (tries);
    }

    public int getAns() {
        return (answer);
    }
}

Answer 1

您的程序不正确有多种原因。

1. 你正在使用“答案”来停止，而不是猜测。您应该检查以确保“猜测”不是 99。
2. 在您的 Player while 循环 中，您需要更改该逻辑以使其在猜测为 99 时也停止。现在您正在使用逻辑 or但您需要将其更改为和。

修改后的代码:

public class AdderGame {
    public static void main (String [] args){
        int ans = 0;
        int guess = 0;
        int tries;
        int score = 0;

        Player one = new Player (0 , 0);
        while (guess != 99) {
            tries = one.getTry();
            ans = one.getAns();
            guess = one.getGuess(); // notice I'm getting the guess
            switch (tries) {
            case 1: score += 5; break;
            case 2: score += 3; break;
            case 3: score += 1; break;
            case 4: score += 0;
            System.out.print("The right answer is "); break;
            }
        }

        System.out.print("Your Score is " + score);
    }
}

// Methods from inside of your Player class
public int getTry(){
    Scanner input = new Scanner(System.in);
    ran1 = (int) (19 * Math.random());
    ran2 = (int) (19 * Math.random());
    answer = ran1 + ran2;

    do {
        System.out.print(ran1 + " + " + ran2 + ": ");
        guess = input.nextInt();
        if (guess == answer) {
            return (tries);
        } else {
            tries += 1;
        }
    // Notice that it's now `&& guess != 99` instead of `||`
    } while (tries <= 4 && answer != guess && guess != 99);
    return (tries);
}
// new getter for getting the guess
public int getGuess(){
    return guess;
}