结对编程

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <fstream>
#include <limits>

// 函数原型声明
int getRandomNumber(int min, int max);

int main() {
    int n;
    std::cout << "请输入题目的数量： " << std::endl;
    std::cin >> n;

    // 初始化随机数生成器
    srand(static_cast<unsigned int>(time(0)));

    // 创建一个ofstream对象用于写入问题和答案
    std::ofstream outQuestionFile("question.txt");
    std::ofstream outAnswerFile("answer.txt");
    if (!outQuestionFile || !outAnswerFile) {
        // 如果文件打开失败，输出错误信息
        std::cerr << "Unable to open file for writing." << std::endl;
        return 1;
    }

    int cnt = 0;
    while (cnt < n) {
        int num1, num2;
        char op;
        double result;
        do {
            num1 = getRandomNumber(1, 100);
            num2 = getRandomNumber(1, 100);
            int opCode = rand() % 4;
            switch (opCode) {
                case 0:
                    op = '+';
                    result = num1 + num2;
                    break;
                case 1:
                    op = '-';
                    result = num1 - num2;
                    break;
                case 2:
                    op = '*';
                    result = num1 * num2;
                    break;
                case 3:
                    op = '/';
                    result = num1 != 0 ? static_cast<double>(num1) / num2 : std::numeric_limits<double>::max(); // 防止除以0
                    break;
                default:
                    op = '+';
                    result = num1 + num2;
            }
        } while (result >= 100 || (op == '/' && num1 % num2 != 0) || (op == '/' && num2 == 0));

        // 将问题和答案写入文件
        outQuestionFile << num1 << ' ' << op << ' ' << num2 << " = \n";
        outAnswerFile << num1 << ' ' << op << ' ' << num2 << " = " << result << std::endl;

        cnt++;
    }

    // 关闭文件
    outQuestionFile.close();
    outAnswerFile.close();

    std::cout << "题目和答案已分别写入 question.txt 和 answer.txt 文件中。" << std::endl;
    return 0;
}

// 生成指定范围内的随机数
int getRandomNumber(int min, int max) {
    return rand() % (max - min + 1) + min;
}

学号：2252427