第九周（1)

/* (程序頭部註釋開始)
* 程序的版權和版本聲明部分
* Copyright (c) 2011, 煙臺大學計算機學院學生 
* All rights reserved.
* 文件名稱：                              
* 作    者：          苗影                    
* 完成日期：      2012   年  4     月   15    日
* 版 本 號：          


* 對任務及求解方法的描述部分
* 輸入描述： 
* 問題描述： 
* 程序輸出： 
* 程序頭部的註釋結束
*/

#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);  
    friend ostream& operator << (ostream&,Complex&);//聲明重載運算符“<<”函數  
private:  
    double real;  
    double imag;  
};  
  
//下面定義成員函數  
  
Complex Complex::operator + (Complex &c2)  
 {  
     return Complex(real + c2.real,imag + c2.imag);  
 }  
  
Complex Complex::operator - (Complex &c2)  
 {  
     return Complex(real - c2.real,imag - c2.imag);  
 }  
  
Complex Complex::operator * (Complex &c2)  
 {  
     return Complex(real * c2.real - imag * c2.imag,imag * c2.real + real * c2.imag);  
 }  
  
Complex Complex::operator / (Complex &c2)  
 {  
     return Complex((real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag),   
    (imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag));    
  
 }  
  
ostream& operator << (ostream& output,Complex& c)//定義重載運算符“<<”函數  
{  
    output << "(" << c.real << "," << c.imag << "i)" << endl;  
    return output;  
}  
  
 void main()  
 {  
     Complex c1(3,4),c2(5,-10),c3;  
     cout << "c1 = ";    
     cout << c1;    
     cout << "c2 = ";    
     cout << c2;    
     c3 = c1 + c2;  
     cout << "c1 + c2 = ";  
     cout << c3;  
     c3 = c1 - c2;  
     cout << "c1 - c2 = ";  
     cout << c3;  
     c3 = c1 * c2;   
     cout << "c1 * c2 = ";  
     cout << c3;  
     c3 = c1 / c2;  
     cout << "c1 / c2 = ";  
     cout << c3;  
     system("pause");  
 }   

感言：因爲已經給了數據，不用在設置cin