用c++为复数类Complex重载实现+，-，*，/，<<,>>等运算符

好的，下面是一个简单的复数类Complex，重载了+，-，*，/，<<,>>等运算符的示例代码：

#include <iostream>

using namespace std;

class Complex {
public:
    Complex(double real = 0, double imag = 0) : m_real(real), m_imag(imag) {}
    Complex(const Complex& other) : 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 {
        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, m_real * other.m_imag + m_imag * other.m_real);
    }

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

    friend ostream& operator<<(ostream& os, const Complex& c) {
        os << "(" << c.m_real << ", " << c.m_imag << ")";
        return os;
    }

    friend istream& operator>>(istream& is, Complex& c) {
        is >> c.m_real >> c.m_imag;
        return is;
    }

private:
    double m_real;
    double m_imag;
};

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

    cout << "c1 = " << c1 << endl;
    cout << "c2 = " << c2 << endl;

    cout << "c1 + c2 = " << c1 + c2 << endl;
    cout << "c1 - c2 = " << c1 - c2 << endl;
    cout << "c1 * c2 = " << c1 * c2 << endl;
    cout << "c1 / c2 = " << c1 / c2 << endl;

    Complex c3;
    cout << "Input a complex number: ";
    cin >> c3;
    cout << "The complex number you input is: " << c3 << endl;

    return 0;
}

在上述代码中，我们重载了Complex类的+，-，*，/，<<,>>等运算符，并利用了友元函数的特性来重载输出运算符<<和输入运算符>>。在main函数中，我们对重载后的运算符进行了测试，输出了两个复数的和、差、积、商以及用户输入的复数。

希望这个示例代码对你有所帮助。