成员函数运算+ - * /

/* 02.* 程序的版权和版本声明部分 03.* Copyright (c)2012, 烟台大学计算机学院学生 04.* All rightsreserved. 05.* 文件名称： object.cpp 06.* 作者：刘明亮 07.* 完成日期： 2013年 4 月19日 08.* 版本号： v1.0 09.* 输入描述： 10.* 问题描述： 11.* 程序输出： */  #include<iostream>using namespace std;class Complex{public:Complex(){real=0;imag=0;}Complex(double r,double i){real=r;imag=i;}Complex operator+(Complex &c2);Complex operator-(Complex &c2);Complex operator*(Complex &c2);Complex operator/(Complex &c2);void display(); private:double real;double imag;};//下面定义成员函数Complex Complex::operator+(Complex &c2){    Complex c;    c.real=real+c2.real;    c.imag=imag+c2.imag;    return c;}Complex Complex::operator-(Complex &c2){    Complex c;    c.real=real-c2.real;    c.imag=imag-c2.imag;    return c;}Complex Complex::operator*(Complex &c2){    Complex c;    c.real=real*c2.real;    c.imag=imag*c2.imag;    return c;}Complex Complex::operator/(Complex &c2){    Complex c;    c.real=real/c2.real;    c.imag=imag/c2.imag;    return c;}void Complex::display(){    cout<<"("<<real<<","<<imag<<")\n";}//下面定义用于测试的main()函数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;}