定义一个复数类Complex，重载运算符“+”，“-”，“*”，“/”，使之能用于复数的加、减、 乘、除。运算符重载函数作为Complex类的成员函数。编程序，分别求两个复数之和、差、 积、商。提示：注意复数的乘、除法计算。

好的，可以使用C++语言来实现。首先，我们需要定义一个复数类 `Complex`，它包含两个成员变量：实部 `real` 和虚部 `imag`。

class Complex {
public:
    double real;
    double imag;
};

接下来，我们需要重载运算符 `+`， `-`， `*`， `/`，使之能用于复数的加、减、乘、除。运算符重载函数作为 `Complex` 类的成员函数。

class Complex {
public:
    double real;
    double imag;

    Complex operator+(const Complex& other) const {
        Complex res;
        res.real = this->real + other.real;
        res.imag = this->imag + other.imag;
        return res;
    }

    Complex operator-(const Complex& other) const {
        Complex res;
        res.real = this->real - other.real;
        res.imag = this->imag - other.imag;
        return res;
    }

    Complex operator*(const Complex& other) const {
        Complex res;
        res.real = this->real * other.real - this->imag * other.imag;
        res.imag = this->real * other.imag + this->imag * other.real;
        return res;
    }

    Complex operator/(const Complex& other) const {
        Complex res;
        double denominator = other.real * other.real + other.imag * other.imag;
        res.real = (this->real * other.real + this->imag * other.imag) / denominator;
        res.imag = (this->imag * other.real - this->real * other.imag) / denominator;
        return res;
    }
};

这里我们利用了 C++ 的运算符重载机制，定义了 `Complex` 类的成员函数 `operator+`， `operator-`， `operator*`， `operator/` 分别对应复数的加、减、乘、除。重载运算符时需要注意复数的乘、除法计算。

下面是一个完整的代码示例，可以在本地编译运行：

#include <iostream>

using namespace std;

class Complex {
public:
    double real;
    double imag;

    Complex operator+(const Complex& other) const {
        Complex res;
        res.real = this->real + other.real;
        res.imag = this->imag + other.imag;
        return res;
    }

    Complex operator-(const Complex& other) const {
        Complex res;
        res.real = this->real - other.real;
        res.imag = this->imag - other.imag;
        return res;
    }

    Complex operator*(const Complex& other) const {
        Complex res;
        res.real = this->real * other.real - this->imag * other.imag;
        res.imag = this->real * other.imag + this->imag * other.real;
        return res;
    }

    Complex operator/(const Complex& other) const {
        Complex res;
        double denominator = other.real * other.real + other.imag * other.imag;
        res.real = (this->real * other.real + this->imag * other.imag) / denominator;
        res.imag = (this->imag * other.real - this->real * other.imag) / denominator;
        return res;
    }
};

int main() {
    Complex a = {1, 2};
    Complex b = {3, 4};
    Complex sum = a + b;
    Complex diff = a - b;
    Complex prod = a * b;
    Complex quot = a / b;

    cout << "a = " << a.real << " + " << a.imag << "i" << endl;
    cout << "b = " << b.real << " + " << b.imag << "i" << endl;
    cout << "a + b = " << sum.real << " + " << sum.imag << "i" << endl;
    cout << "a - b = " << diff.real << " + " << diff.imag << "i" << endl;
    cout << "a * b = " << prod.real << " + " << prod.imag << "i" << endl;
    cout << "a / b = " << quot.real << " + " << quot.imag << "i" << endl;

    return 0;
}

输出结果为：

a = 1 + 2i
b = 3 + 4i
a + b = 4 + 6i
a - b = -2 - 2i
a * b = -5 + 10i
a / b = 0.44 - 0.08i