第八周实验报告1

* 程序头部注释开始* 程序的版权和版本声明部分

* Copyright (c) 2011, 烟台大学计算机学院学生

* All rights reserved.* 文件名称：

* 作 者： 时永杰

* 完成日期： 2012 年 3月 26日

* 版 本 号：4308

【任务1】实现复数类中的运算符重载
定义一个复数类重载运算符+、-、*、/，使之能用于复数的加减乘除。
（1）方案一：请用类的成员函数完成运算符的重载；

T12.h

class Complex
{
public:
	Complex(){real=0;imag=0;}
	Complex(double r,double i){real=r;imag=i;}
	friend Complex operator+(Complex &c1 ,Complex &c2);
	friend Complex operator-(Complex &c1 ,Complex &c2);
	friend Complex operator*(Complex &c1 ,Complex &c2);
	friend Complex operator/(Complex &c1 ,Complex &c2);
	void display();
private:
	double real;
	double imag;
};

 

T12.main.

#include <iostream>

#include "T1.h"

using namespace std;

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();
	system("pause");
	return 0;
}

 

T12.cpp.

#include <iostream>

#include "T1.h"

using namespace std;
Complex operator + (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=c1.real+c2.real;
	c.imag=c1.imag+c2.imag;
	return c;
}
Complex operator - (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=c1.real-c2.real;
	c.imag=c1.imag-c2.imag;
	return c;
}

Complex operator * (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=c1.real*c2.real-c1.imag*c2.imag;
	c.imag=c1.real*c2.imag+c1.imag*c2.real;
	return c;
}
Complex operator / (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=(c1.real*c2.real-c1.imag*c2.imag)/(c2.real*c2.real-c2.imag*c2.imag);
	c.imag=(c1.real*c2.imag+c1.imag*c2.real)/(c2.real*c2.real-c2.imag*c2.imag);
	return c;
}
void Complex::display()
{
	cout<<"("<<real<<","<<imag<<")"<<endl;
}

2）方案二：请用类的友元函数，而不是成员函数，完成上面提及的运算符的重载；
（3）方案三：在方案二的基础上，扩展+、-、*、/运算符的功能，使之能与double型数据进行运算。设Complex c; double d; c?d和d?c的结果为将d视为实部为d的复数同c运算的结果（其中?为+、-、*、/之一）。另外，定义一目运算符-，-c相当于0-c。

T13.h

	Complex(){real=0;imag=0;}
	Complex(double r,double i){real=r;imag=i;}
	friend Complex operator+(Complex &c1 ,Complex &c2);
	friend Complex operator-(Complex &c1 ,Complex &c2);
	friend Complex operator*(Complex &c1 ,Complex &c2);
	friend Complex operator/(Complex &c1 ,Complex &c2);
	friend Complex operator+(Complex &c1,double d);
	friend Complex operator-(Complex &c1,double d);
	friend Complex operator*(Complex &c1,double d);
	friend Complex operator/(Complex &c1,double d);
    friend Complex operator-(Complex &c1);
	void display();
private:
	double real;
	double imag;
};

 

 

T13.main

#include <iostream>

#include "T1.h"

using namespace std;

int main()
{
	Complex c1(3,4),c2(5,-10),c3;
	double d=3;
	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();
     c3=c1+d;
	cout<<"c1+c2=";
	c3.display();
	c3=c1-d;
	cout<<"c1-c2=";
	c3.display();
	c3=c1*d;
	cout<<"c1*c2=";
	c3.display();
	c3=c1/d;
	cout<<"c1/c2=";
	c3.display();
	c3=-c1;
	c3.display();
	system("pause");
	return 0;
}

 

T13.cpp

#include <iostream>

#include "T1.h"

using namespace std;
Complex operator + (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=c1.real+c2.real;
	c.imag=c1.imag+c2.imag;
	return c;
}
Complex operator - (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=c1.real-c2.real;
	c.imag=c1.imag-c2.imag;
	return c;
}

Complex operator * (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=c1.real*c2.real-c1.imag*c2.imag;
	c.imag=c1.real*c2.imag+c1.imag*c2.real;
	return c;
}
Complex operator / (Complex &c1,Complex &c2)
{
	Complex c;
	c.real=(c1.real*c2.real-c1.imag*c2.imag)/(c2.real*c2.real-c2.imag*c2.imag);
	c.imag=(c1.real*c2.imag+c1.imag*c2.real)/(c2.real*c2.real-c2.imag*c2.imag);
	return c;
}
Complex operator + (Complex &c1,double d)
{
	Complex c;
	c.real=c1.real+d;;
	c.imag=c1.imag;
	return c;
}
Complex operator - (Complex &c1,double d)
{
	Complex c;
	c.real=c1.real-d;
	c.imag=c1.imag;
	return c;
}

Complex operator * (Complex &c1,double d)
{
	Complex c;
	c.real=c1.real*d;
	c.imag=c1.imag;
	return c;
}
Complex operator / (Complex &c1,double d)
{
	Complex c;
	c.real=c1.real/d;
	c.imag=c1.imag;
	return c;
}
Complex operator - (Complex &c1)
{
	Complex c;
	c.real=-c1.real;
	c.imag=-c1.imag;
	return c;
}

void Complex::display()
{
	cout<<"("<<real<<","<<imag<<")"<<endl;
}

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