java小学四则运算测试程序

以下是一个Java小学生四则运算测试程序的示例代码：

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

public class MathTest {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        Random random = new Random();
        int score = 0; // 记录分数
        int count = 0; // 记录题目数量
        while (true) {
            int num1 = random.nextInt(100); // 生成0-99之间的随机整数
            int num2 = random.nextInt(100);
            int operator = random.nextInt(4); // 生成0-3之间的随机整数，分别代表加减乘除
            String operatorStr = "";
            int result = 0; // 记录正确答案
            switch (operator) {
                case 0:
                    operatorStr = "+";
                    result = num1 + num2;
                    break;
                case 1:
                    operatorStr = "-";
                    result = num1 - num2;
                    break;
                case 2:
                    operatorStr = "*";
                    result = num1 * num2;
                    break;
                case 3:
                    operatorStr = "/";
                    result = num1 / num2;
                    break;
            }
            System.out.print((count + 1) + ". " + num1 + " " + operatorStr + " " + num2 + " = ");
            int answer = input.nextInt();
            if (answer == result) {
                System.out.println("恭喜你，回答正确！");
                score += 10;
            } else {
                System.out.println("很遗憾，回答错误。正确答案是：" + result);
            }
            count++;
            if (count == 30) {
                break;
            }
        }
        System.out.println("测试结束，的得分是：" + score);
    }
}

该程序会随机生成30道小学生四则运算题，用户需要输入答案，程序会判断答案是否正确，并记录分数。最后输出用户的得分。