复数类 complex

定义复数类Complex，包括两个double型的数据成员real和image，要求对+、-、、/、+=、-+、=、/=、几个运算符进行重载以实现复数的运算，并进行验证。

#define _CRT_SECURE_NO_WARNINGS   #include <iostream>  using namespace std;class Complex{public:    //默认的构造函数（含缺省值，并初始化参数）      Complex(const double real = 0.0, const double image = 0.0)        :_real(real)  //初始化        , _image(image)    {}    //拷贝构造函数      Complex(const Complex& c)    {        _real = c._real;        _image = c._image;    }    //析构函数      ~Complex()    {}    //赋值运算符的重载      Complex& operator=(const Complex& c)    {        this->_real = c._real;        //_real = c._real;//隐含的this指针        this->_image = c._image;        //_image = c._image;        return *this;    }    //加法运算符的重载      Complex operator+(const Complex& c)    {        Complex tmp;        tmp._real = _real + c._real;        tmp._image = _image + c._image;        return tmp;    }    //减法    Complex operator-(const Complex& c)    {        Complex tmp;        tmp._real = _real - c._real;        tmp._image = _image - c._image;        return tmp;    }    //乘法    Complex operator*(const Complex& c)    {        Complex tmp;        tmp._real = _real * c._real - _image*c._image;        tmp._image = _real * c._image + _image*c._real;        return tmp;    }    //除法    Complex operator/(const Complex& c)    {        Complex tmp;        tmp._real = (_real / c._real + _image*c._image) / (c._real*c._real + c._image*c._image);        tmp._image = (_image*c._real - _real*c._image) / (c._real*c._real + c._image*c._image);        return tmp;    }    Complex operator+=(const Complex& c)    {        _real += c._real;        _image += c._image;        return *this;    }    Complex operator-=(const Complex& c)    {        _real -= c._real;        _image -= c._image;        return *this;//返回当前对象    }    Complex operator*=(const Complex& c)    {        double real0 = _real;        double image0 = _image;        _real = (real0 * c._real - image0*c._image);        _image = (real0 * c._image + image0*c._real);        return *this;    }    Complex operator/=(const Complex& c)    {        double real0 = _real;        double image0 = _image;        _real /= (real0 / c._real + image0*c._image) / (c._real*c._real + c._image*c._image);        _image /= (image0*c._real - real0*c._image) / (c._real*c._real + c._image*c._image);        return *this;    }    void Display()    {        cout << _real << " " << _image << endl;    }private:    double _real;    double _image;};//测试函数  void Funtest1(){    Complex c1(2.0, 3.0);    c1.Display();    Complex c2(c1);    c2.Display();    Complex c3;    c3 = c1+c2;      c3.Display();}void Funtest2(){    Complex c1(2.0, 3.0);    c1.Display();    Complex c2(c1);    c2.Display();    c1 *= c2;    c1.Display();}int main(){    cout << "Funtest1:" << endl;    Funtest1();    cout << "Funtest2:" << endl;    Funtest2();    getchar();    return 0;}

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