学步园

/*Copyright (c) 2011, 烟台大学计算机学院
* All rights reserved.
* 作    者： 石尧
* 完成日期：2014 年04  月 15日
* 版 本 号：v1.0
*
* 问题描述：运算符重载。
* 样例输入：略.
* 样例输出：略。
* 问题分析：略。
*/
#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;//实部
    double imag; //虚部
};
//下面定义成员函数
Complex Complex::operator+(Complex &c2)//定义复数相加函数
  {
      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<<"i)"<<endl;
}

//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;
}
心得体会：运算符重载就是将原有的运算符赋予新的功能，并在函数中应用。