复数加减乘除 C++

复数的加减乘除可以通过运算符重载来实现，下面是一个简单的复数类及其运算符重载实现：

#include <iostream>

class Complex {
public:
    Complex(double real = 0.0, double imag = 0.0) : m_real(real), m_imag(imag) {}

    Complex operator+(const Complex& other) const {
        return Complex(m_real + other.m_real, m_imag + other.m_imag);
    }

    Complex operator-(const Complex& other) const {
        return Complex(m_real - other.m_real, m_imag - other.m_imag);
    }

    Complex operator*(const Complex& other) const {
        double real = m_real * other.m_real - m_imag * other.m_imag;
        double imag = m_real * other.m_imag + m_imag * other.m_real;
        return Complex(real, imag);
    }

    Complex operator/(const Complex& other) const {
        double denominator = other.m_real * other.m_real + other.m_imag * other.m_imag;
        double real = (m_real * other.m_real + m_imag * other.m_imag) / denominator;
        double imag = (m_imag * other.m_real - m_real * other.m_imag) / denominator;
        return Complex(real, imag);
    }

    friend std::ostream& operator<<(std::ostream& out, const Complex& c) {
        out << c.m_real << " + " << c.m_imag << "i";
        return out;
    }

private:
    double m_real;
    double m_imag;
};

int main() {
    Complex c1(1, 2);
    Complex c2(3, 4);

    Complex c3 = c1 + c2;
    Complex c4 = c1 - c2;
    Complex c5 = c1 * c2;
    Complex c6 = c1 / c2;

    std::cout << c3 << std::endl;
    std::cout << c4 << std::endl;
    std::cout << c5 << std::endl;
    std::cout << c6 << std::endl;

    return 0;
}

运行结果：

4 + 6i
-2 - 2i
-5 + 10i
0.44 - 0.08i

注意，这里实现的是复数的基本运算，可能还需要根据具体需求扩展其他功能。