运算符重载--友元

来源：互联网发布：软件项目总监岗位职责编辑：程序博客网时间：2024/05/29 16:38
/**Corpyright (c)2013,烟台大学计算机学院*All right reseved.*作者：马广明*完成日期：2014年4月15日*版本号：v1.0*问题描述:运算符重载*/#include <iostream>#include <cmath>using namespace std;class Complex{public:    Complex(){real=0;imag=0;}    Complex(double r,double i){real=r; imag=i;}    friend Complex operator+(Complex &c1,Complex &c2);    friend Complex operator-(Complex &c1,Complex &c2);    friend Complex operator*(Complex &c1,Complex &c2);    friend Complex operator/(Complex &c1,Complex &c2);    void display();private:    double real;    double imag;};void Complex::display(){    cout<<"("<<real<<","<<imag<<")"<<endl;}Complex operator+(Complex &c1,Complex &c2){    Complex c;    c.real=c1.real+c2.real;    c.imag=c1.imag+c2.imag;    return c;}Complex operator-(Complex &c1,Complex &c2){    Complex c;    c.real=c1.real-c2.real;    c.imag=c1.imag-c2.imag;    return c;}Complex operator*(Complex &c1,Complex &c2){    Complex c;    c.real=c1.real*c2.real-c1.imag+c2.imag;    c.imag=c1.imag*c2.real+c1.real*c2.imag;    return c;}Complex operator/(Complex &c1,Complex &c2){    Complex c;    c.real=(c1.real*c2.real+c1.imag+c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);    c.imag=(c1.imag*c2.real-c1.real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);    return c;}int main(){    Complex c1(3,4),c2(5,-10),c3;    cout<<"c1=";    c1.display();    cout<<"c2=";    c2.display();    c3=c1+c2;    cout<<"c1+c2=";    c3.display();    c3=c1-c2;    cout<<"c1-c2=";    c3.display();    c3=c1*c2;    cout<<"c1*c2=";    c3.display();    c3=c1/c2;    cout<<"c1/c2=";    c3.display();    return 0;}
0 0