如何在Java程序中创建一个计数器 [英] how to create a counter in a dr Java program

问题描述

/*This is a quiz program that will ask the user 10 questions. the user will answer
 * these questions and will be scored out of 10.*/

class Quiz {
    public static void main(String args[]) {
        // Instructions
        System.out.println("instructions");
        System.out.println(" ");
        System.out
                .println("1. You wll be asked ten questions through out the quiz.");
        System.out
                .println("2. The first question will appear, you will have to answer that question for the next question to appear.");
        System.out
                .println("3. When you answer the last question you will be told your score.");
        System.out.println(" ");

        System.out.println("welcome to the basketball quiz.");

        // question 1
        System.out.println(" ");
        System.out.println("Question 1. ");
        System.out.println("How tall is a basketball hoop? ");
        System.out.println("Type in Answer here:");
        String Question1 = In.getString();
        if (Question1.equalsIgnoreCase("10 Feet")) {
            System.out.println("Correct!");
        } else {
            System.out.println("you got this questions wrong");
        }

        // question 2
        System.out.println(" ");
        System.out.println("Question 2. ");
        System.out.println("Who invented basketball? ");
        System.out.println("Type in Answer here:");
        String Question2 = In.getString();
        if (Question2.equalsIgnoreCase("James Naismith ")) {
            System.out.println("Correct!");
        } else {
            System.out.println("you got this questions wrong");
        }
    }
}

这是我的程序，我我在写我想制作一个计数器，用于记录每个问题的得分，然后在问题结束后将其显示给用户。我尝试使用这个：

This is my program that I am writing. I want to make a counter that will keep score of every question that is answered right and then display it to the user after the questions are finished. I tried using this:

int score=0;

score=score+1;

它不适用于第二个问题，但适用于第三个问题...它给出了我错了。
还有其他方法可以做到这一点，还是我做错了什么？

It doesn't not work for the 2nd question, but works for the 3rd... it gives me an error. Is there another way I can do this or am I doing something wrong?

推荐答案

看起来你在正确的轨道。你需要在程序开始时声明一个socre变量。

It looks like you are on the right track. You need to declare a socre variable at the begiunning of the program.

int score = 0;

然后在每个打印出正确的问题中，你可以增加这样的分数：

Then in each question where you print out "correct" you can increment the score like this:

 score++;

在上一个问题之后的程序结束时，您可以打印分数。

At the end of the program after the last question you can print the score.

也许你应该发布你在尝试时得到的错误。

Maybe you should post the error you got when you tried it.

更新：
语法为score ++ NOT score = ++。也就是说，取出=符号。

UPDATE: The syntax is score++ NOT score=++. That is, take out the = sign.

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