第七週實驗報告（三）設計complex模板

/* (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：設計complex模板使實部和虛部的類型爲定義對象時用的實際類型

* 作    者：         晁陽                      

* 完成日期：     2012    年4      月   4  日

* 版本號：       m1.0  

* 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;  
	template <class numtype>  
	class Complex     
	{  
	public:  
	    Complex( ){real=0;imag=0;}       
	    Complex(numtype r,numtype i){real=r;imag=i;}   
	    Complex complex_add(Complex &c2);   
	    Complex complex_sub (Complex &c2);   
	    Complex complex_mul (Complex &c2);   
	    Complex complex_div (Complex &c2);   
	    void display( );     
	private:  
	    numtype real;   
	    numtype imag;   
	};  
	template <class numtype>  
	Complex<numtype> Complex<numtype>::complex_add(Complex &c2)  
	{  
	    Complex c;  
	    c.real=real+c2.real;  
	    c.imag=imag+c2.imag;  
	    return c;  
	}   
	template <class numtype>  
	Complex<numtype> Complex<numtype>::complex_sub (Complex &c2)  
	{  
	    Complex c;  
	    c.real=real-c2.real;  
	    c.imag=imag-c2.imag;  
	    return c;  
	}  
	template <class numtype>  
	Complex<numtype> Complex<numtype>::complex_mul (Complex &c2)  
	{  
	    Complex c;  
	    c.real=real*c2.real+imag*c2.imag;  
	    c.imag=real*c2.imag+imag*c2.real;  
	    return c;  
	}   
	template <class numtype> 
	Complex<numtype> Complex<numtype>::complex_div (Complex &c2)
	{   
	    Complex c,c3,c4;  
	    c3.real=c2.real;  
	    c3.imag=c2.imag;  
	    c.real=real*c3.real+imag*c3.imag;  
	    c.imag=(-real*c3.imag)+imag*c3.real;    
	    c4.real=c2.real*c2.real+c2.imag*c3.imag;  
	    c.real=c.real/c4.real;  
	    c.imag=c.imag/c4.real;  
	    return c;  
	}    
	template <class numtype>    
	void Complex<numtype>::display( )     
	{  
	    cout<<"("<<real<<","<<imag<<"i)"<<endl;  
	}  
	int main( )  
	{     
        Complex<int> c1(4.5,5.6),c2(9.8,-8.7),c3;    
	    c3=c1.complex_add(c2);    
	    cout<<"c1+c2=";   
	    c3.display( );    
	    Complex<double> c4(4.5,5.6),c5(9.8,-8.7),c6;    
	    c6=c4.complex_sub (c5);    
	    cout<<"c4-c5=";   
	    c6.display( );   
	  
	    Complex<double> c7(4.5,5.6),c8(9.8,-8.7),c9;    
	    c9=c7.complex_mul (c8);    
	    cout<<"c7*c8=";   
	    c9.display( );   
	  
	    Complex<double> c10(4.5,5.6),c11(9.8,-8.7),c12;    
	    c12=c10.complex_div (c11);    
	    cout<<"c10/c11=";   
	    c12.display( );   
	    system("PAUSE");  
	    return 0;  
	}  

上機感言：通過模板，將功能相同，數據類型不同的函數通過一個函數進行處理，可以簡化程序，給我們省了很多力氣啊 ， 感謝模板！