java实现加减乘除运算符随机生成十道题并判断对错_java 随机出题四则运算

好的，以下是一个 Java 实现加减乘除运算符随机生成十道题并判断对错的示例代码：

import java.util.Random;
import java.util.Scanner;

public class ArithmeticQuiz {
    public static void main(String[] args) {
        Random random = new Random();
        Scanner scanner = new Scanner(System.in);
        int score = 0;

        for (int i = 1; i <= 10; i++) {
            int num1 = random.nextInt(100) + 1;
            int num2 = random.nextInt(100) + 1;
            int operator = random.nextInt(4);

            String operatorStr = "";
            int answer = 0;

            switch (operator) {
                case 0:
                    operatorStr = "+";
                    answer = num1 + num2;
                    break;
                case 1:
                    operatorStr = "-";
                    answer = num1 - num2;
                    break;
                case 2:
                    operatorStr = "*";
                    answer = num1 * num2;
                    break;
                case 3:
                    operatorStr = "/";
                    answer = num1 / num2;
                    break;
            }

            System.out.print(i + ". " + num1 + " " + operatorStr + " " + num2 + " = ");
            int userAnswer = scanner.nextInt();

            if (userAnswer == answer) {
                System.out.println("Correct!");
                score++;
            } else {
                System.out.println("Wrong! The answer is " + answer);
            }
        }

        System.out.println("Your score is " + score + "/10");
    }
}

这个程序会随机生成十道题目，每道题目包含两个随机数和一个随机的运算符，然后让用户输入答案，最后输出用户的得分。注意，这个程序只是一个示例，还有很多地方可以进行优化，比如让用户选择运算符的范围，让用户选择题目数量等等。