使用C++写一个计算器 要求在屏幕上录入numa +numb 回车 计算出结果 考虑分母不为零

在C++中编写一个简单的控制台计算器，你可以创建一个`Calculator`类，并提供加法操作。考虑到除数为零的情况，我们可以添加条件判断。以下是一个基础的实现：

#include <iostream>
#include <stdexcept>

class Calculator {
public:
    double add(double numerator, double denominator) {
        if (denominator == 0) {
            throw std::invalid_argument("Denominator cannot be zero");
        }
        return numerator / denominator;
    }

    // 主函数，用于接收用户输入并显示结果
    void run() {
        double numa, numb;
        std::cout << "Enter the first number (numa): ";
        std::cin >> numa;

        std::cout << "Enter the second number (numb) and the denominator (separated by space): ";
        std::cin >> numb >> denominator;

        try {
            double result = add(numa, numb);
            std::cout << "The result of " << numa << " + (" << numb << "/" << denominator << ") is: " << result << "\n";
        } catch (const std::invalid_argument& e) {
            std::cerr << "Error: " << e.what() << "\n";
        }
    }
};

int main() {
    Calculator calculator;
    calculator.run();
    return 0;
}