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【C】复数类
作者:akang / 发布于2015/10/19/ 1379

	#ifndef _COMPLEX_H_
	#define _COMPLEX_H_
	#include<iostream>
	using namespace std;
	class Complex
	{
	private:
	 double real;
	 double imag;
	public:
	 Complex();
	 ~Complex();
	 Complex(double rr,double rg);
	 void setComplex(double rr,double rg);
	 void getComplex(double& rr,double& rg) const;
	 void setRealPart(double rr);
	 double getRealPart() const;
	 void setImaginaryPart(double rg);
	 double getImaginaryPart() const;
	 Complex operator+(const Complex& rc);
	 Complex operator*(const Complex& rc);
	 bool operator==(const Complex& rc) const;
	 friend ostream& operator<<(ostream& os,const Complex& rc);
	 friend istream& operator>>(istream& is,Complex& rc);
	};
	#endif
	2. [代码]Complex.cpp
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	#include"Complex.h"
	#include<iostream>
	using namespace std;
	Complex::Complex():real(0.0),imag(0.0)
	{
	
	}
	
	Complex::~Complex()
	{
	
	}
	Complex::Complex(double rr=0.0,double rg=0.0):real(rr),imag(rg)
	{
	
	}
	
	void Complex::setComplex(double rr,double rg)
	{
	 this->real=rr;
	 this->imag=rg;
	return;
	}
	
	void Complex::getComplex(double& rr,double& rg) const
	{
	 rr=this->real;
	 rg=this->imag;
	return;
	}
	
	void Complex::setRealPart(double rr)
	{
	 this->real=rr;
	return;
	}
	
	double Complex::getRealPart() const
	{
	 return this->real;
	}
	
	void Complex::setImaginaryPart(double rg)
	{
	 this->imag=rg;
	return;
	}
	
	double Complex::getImaginaryPart() const
	{
	 return this->imag;
	}
	
	Complex Complex::operator+(const Complex& rc)
	{
	 Complex temp(0.0,0.0);
	 temp.real=this->real+rc.real;
	 temp.imag=this->imag+rc.imag;
	return temp;
	}
	
	Complex Complex::operator*(const Complex& rc)
	{
	 Complex temp(0.0,0.0);
	 temp.real=(this->real)*(rc.real)-(this->imag)*(rc.imag);
	 temp.imag=(this->real)*(rc.imag)+(this->imag)*(rc.real);
	return temp;
	}
	
	bool Complex::operator==(const Complex& rc) const
	{
	 if((this->real==rc.real)&&(this->imag==rc.imag))return true;
	return false;
	}
	
	ostream& operator<<(ostream& os,const Complex& rc)
	{
	 os<<'('<<rc.real<<','<<rc.imag<<')';
	return os;
	}
	
	istream& operator>>(istream& is,Complex& rc)
	{
	 char ch;
	 is>>ch;
	 is>>rc.real;
	 is>>ch;
	 is>>rc.imag;
	 is>>ch;
	return is;
	}
	3. [代码]assign.cpp
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	/*********************************************************************
	* PROGRAM: CSCI 241 Assignment 4
	* PROGRAMMER: xujiwei
	* LOGON ID: 13721690
	* DUE DATE: due date of assignment
	*
	* FUNCTION: This program tests the functionality of the Complex
	* class. 2015-10-15
	**********************************************************************/
	#include <iostream>
	#include <iomanip>
	#include "Complex.h"
	
	using std::cin;
	using std::cout;
	using std::endl;
	
	int main()
	{
	 cout<<"Testing constructor... ";
	 Complex c1(23, 34);
	 Complex c4(3, 4);
	
	 cout<<"done\n";
	 cout<<"Testing default constructor use... ";
	
	 Complex c2;
	 Complex c3;
	
	 cout<<"done\n\n";
	 cout<<"Testing stream insertion operator and constructors...\n";
	
	 cout<<"c1 = "<<c1<<endl;
	 cout<<"c2 = "<<c2<<endl<<endl;
	
	 cout<<"Testing get methods...\n";
	
	 cout<<"Real part of c4 = "<<c4.getRealPart()<<endl;
	 cout<<"Imaginary part of c4 = "<<c4.getImaginaryPart()<<endl;
	
	 double r, i;
	
	 c4.getComplex(r, i);
	 cout<<"Real part of c4 = "<<r<<endl;
	 cout<<"Imaginary part of c4 = "<<i<<endl<<endl;
	
	 cout<<"Testing set methods...\n";
	
	 c2.setComplex(3.7, 2.5);
	 cout<<"New value of c2 = "<<c2<<endl;
	 c2.setRealPart(-1.4);
	 cout<<"New value of c2 = "<<c2<<endl;
	 c2.setImaginaryPart(83);
	 cout<<"New value of c2 = "<<c2<<endl<<endl;
	
	 cout<<"Testing stream extraction operator...\n";
	
	 cout<<"Enter a complex number in the form (a, b) ";
	 cin>>c2;
	 cout<<"New value of c2 = "<<c2<<endl<<endl;
	
	 cout<<"Testing addition operator...\n";
	
	 c3=c1+c4;
	 cout<<"c3 = "<<c3<<endl;
	 cout<<c4<<" + "<<c1<<" = "<<c4+c1<<endl;
	 cout<<c4<<" + "<<c4<<" = "<<c4+c4<<endl<<endl;
	
	 cout<<"Testing multiplication operator...\n";
	
	 c3=c1*c4;
	 cout<<"c3 = "<<c3<<endl;
	 cout<<c4<<" * "<<c1<<" = "<<c4*c1<<endl;
	 cout<<c4<<" * "<<c4<<" = "<<c4*c4<<endl<<endl;
	
	 cout<<"Testing equality operator...\n";
	
	 cout<<c1<<" and "<<c3;
	 (c1==c3)?cout<<" are equal\n":cout<<" are not equal\n";
	
	 const Complex c5(3, 4);
	 cout<<c4<<" and "<<c5;
	 (c4==c5)?cout<<" are equal\n":cout<<" are not equal\n";
	
	 return 0;
	}
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