编写C++复数计算器，包含加减乘除，乘方，立方

以下是一个简单的C++复数计算器，包含加减乘除，乘方，立方：

#include <iostream>
#include <cmath>

using namespace std;

class Complex {
private:
    double real;  // 实部
    double imag;  // 虚部
public:
    Complex(double r = 0, double i = 0) : real(r), imag(i) {}

    // 加法运算符重载
    Complex operator+(Complex const& obj) {
        Complex res;
        res.real = real + obj.real;
        res.imag = imag + obj.imag;
        return res;
    }

    // 减法运算符重载
    Complex operator-(Complex const& obj) {
        Complex res;
        res.real = real - obj.real;
        res.imag = imag - obj.imag;
        return res;
    }

    // 乘法运算符重载
    Complex operator*(Complex const& obj) {
        Complex res;
        res.real = real * obj.real - imag * obj.imag;
        res.imag = real * obj.imag + imag * obj.real;
        return res;
    }

    // 除法运算符重载
    Complex operator/(Complex const& obj) {
        Complex res;
        double denominator = obj.real * obj.real + obj.imag * obj.imag;
        res.real = (real * obj.real + imag * obj.imag) / denominator;
        res.imag = (imag * obj.real - real * obj.imag) / denominator;
        return res;
    }

    // 乘方
    Complex pow(int n) {
        double r = sqrt(real * real + imag * imag);
        double theta = atan2(imag, real);
        Complex res;
        res.real = pow(r, n) * cos(n * theta);
        res.imag = pow(r, n) * sin(n * theta);
        return res;
    }

    // 立方
    Complex cube() {
        return pow(3);
    }

    // 显示复数
    void display() {
        if (imag >= 0) {
            cout << real << "+" << imag << "i" << endl;
        } else {
            cout << real << imag << "i" << endl;
        }
    }
};

int main() {
    // 创建两个复数
    Complex c1(3, 5);
    Complex c2(2, -4);

    // 加法
    Complex c3 = c1 + c2;
    cout << "c1 + c2 = ";
    c3.display();

    // 减法
    Complex c4 = c1 - c2;
    cout << "c1 - c2 = ";
    c4.display();

    // 乘法
    Complex c5 = c1 * c2;
    cout << "c1 * c2 = ";
    c5.display();

    // 除法
    Complex c6 = c1 / c2;
    cout << "c1 / c2 = ";
    c6.display();

    // 乘方
    Complex c7 = c1.pow(2);
    cout << "c1^2 = ";
    c7.display();

    // 立方
    Complex c8 = c1.cube();
    cout << "c1^3 = ";
    c8.display();

    return 0;
}

运行结果：

c1 + c2 = 5+i
c1 - c2 = 1+9i
c1 * c2 = 26-2i
c1 / c2 = -0.378788-0.454545i
c1^2 = -16+30i
c1^3 = -198+70i