计数器和 for 循环的问题。协助赞赏答案

【问题标题】：Issues with counter and for loop. Assitance appreciated计数器和 for 循环的问题。协助赞赏
【发布时间】：2019-11-20 15:37:21
【问题描述】：

我的 for 循环和计数器有问题，它应该将我添加的数字的每个值相加，并在 for 循环结束时询问我该值是什么。我添加了数字 2 来结束循环，所以我尝试在打印之前从总数中减去它，但它不起作用。救命！

import java.util.*;

public class CountingCards {
    public static void main(String[] args) {
        Counting();
    }

    public static void Counting() {
        Random rand = new Random();
        int count = 0;
        int sum = 0;
        Scanner in = new Scanner(System.in);
        for (int a = 0; a < 110; a++) {
            int player = rand.nextInt((10) + 1);
            System.out.println("    ");
            System.out.println("You got this card: " + player);
            System.out.println("What is the value of that card");
            int answer = in.nextInt();
            if (player == 1) {
                if (answer == -1) {
                    System.out.println("That is CORRECT");
                    count = -1;
                }
                if (answer != -1) {
                    System.out.println("Sorry, that is INCORRECT");
                    count = -1;
                }
            }
            if (player == 2) {
                if (answer == -1) {
                    count = -1;
                    System.out.println("That is CORRECT");
                }
                if (answer != -1) {
                    count = -1;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 3) {
                if (answer == -1) {
                    count = -1;
                    System.out.println("That is CORRECT");
                }
                if (answer != -1) {
                    count = -1;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 4) {
                if (answer == -1) {
                    count = -1;
                    System.out.println("That is CORRECT");
                }
                if (answer != -1) {
                    count = -1;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 5) {
                if (answer == -1) {
                    count = -1;
                    System.out.println("That is CORRECT");
                }
                if (answer != -1) {
                    count = -1;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 6) {
                if (answer == -1) {
                    count = -1;
                    System.out.println("That is CORRECT");
                }
                if (answer != -1) {
                    count = -1;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 7) {
                if (answer == 0) {
                    count = 0;
                    System.out.println("That is CORRECT");
                }
                if (answer != 0) {
                    count = 0;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 8) {
                if (answer == 0) {
                    count = 0;
                    System.out.println("That is CORRECT");
                }
                if (answer != 0) {
                    count = 0;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 9) {
                if (answer == 0) {
                    count = 0;
                    System.out.println("That is CORRECT");
                }
                if (answer != 0) {
                    count = 0;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }
            if (player == 10) {
                if (answer == 1) {
                    count = 1;
                    System.out.println("That is CORRECT");
                }
                if (answer != 1) {
                    count = 1;
                    System.out.println("Sorry, that is INCORRECT");
                }
            }

            if (answer == -2) {

                sum = sum - 2;
                System.out.println("Your total count is:  " + sum);
                break;
            }
            sum = sum + count;

        }
    }
}

总和应该添加我在整个 for 循环中获得的所有计数器，并且每次都询问我，看看我给它们的答案是否每次都添加到总计数器中。太远了，我不知道为什么

【问题讨论】：

我认为你写了一些更简单的东西来理解你的代码是如何运行/工作的。我没有“得到”这个游戏，这是真的吗？还是您只是对其进行了修改以将其变成其他东西？无论如何，我还要做的是删除第二组 IF。如果您测试 if (answer == -1)，则无需测试 if (answer != -1)。我知道它更直接，但它违反直觉/难以阅读。然后，如果一个玩家只能是 1..10 中的一个，你应该添加 else if，所以 if (player == 1) else if (player == 2)
目前还不清楚您要在这里做什么。它打印一个值，然后询问该值是什么，但它从不将猜测与初始值进行比较？你想总结什么？随机数的总值，猜错/正确的次数？

标签： java for-loop counter

【解决方案1】：

我不明白这个游戏到底是什么；但是查看您的代码，我猜您在以下行中犯了一个逻辑错误：

int player = rand.nextInt((10) + 1);

应该是

int player = rand.nextInt(10) + 1;

第二件事是，你可以替换下面的代码：

if (answer == -1) {
    System.out.println("That is CORRECT");
    count = -1;
}
if (answer != -1) {
    System.out.println("Sorry, that is INCORRECT");
    count = -1;
}

与

if (answer == -1) {
    System.out.println("That is CORRECT");
    count = -1;
} else {
    System.out.println("Sorry, that is INCORRECT");
    count = -1;
}

如需更多帮助，需明确提及游戏规则。

【讨论】：

【解决方案2】：

变化

int player = rand.nextInt((10) + 1);

到

int player = rand.nextInt(10) + 1;

应该可以解决您的问题。希望对你有帮助。。

祝你有美好的一天！

【讨论】：