C++ ： 复数运算“<<”函数重载和“+”、“—”重载

自己最近写了下C++里面的"<<"和"+"，"-"，"*"，"/"运算符重载

 

#include<iostream>using namespace std;class Complex{public:Complex(double r=0, double i=0):real(r), image(i){}Complex operator+(Complex &c);Complex operator-(Complex &c);Complex operator*(Complex &c);Complex operator/(Complex &c);friend ostream & operator<<(ostream &, Complex &);private:double real;double image;};ostream & operator<<(ostream &output, Complex &c){    output<<"(" <<c.real << "+" <<c.image <<"i)" << endl;    return output;}Complex Complex::operator +(Complex &c){return Complex(real+c.real, image+c.image);}Complex Complex::operator -(Complex &c){return Complex(real-c.real, image-c.image);}Complex Complex::operator *(Complex &c){return Complex(real*c.real-image*c.image, real*c.image+image*c.real);}Complex Complex::operator /(Complex &c){return Complex(real/c.real, image/c.image);}int main(){Complex c1(3, 4), c2(5, 10), c3, c4 , c5, c6;c3=c1+c2;c4=c2-c1;c5=c1*c2;c6=c2/c1;    cout << c3 << c4 << c5 << c6;return 0;}