第9周项目1复数类的运算符重载续（1）

/*。
*Copyright(c)2014,烟台大学计算机学院
*All right reserved,
*文件名：test.cpp
*作者：毕玉堂
*完成日期：2015年5月17日
*版本号：v1.0
*
问题描述：
*输入描述：
*程序输出：
*/
#include <iostream>

using namespace std;
class Complex
{
public:
Complex()
{
real=0;
imag=0;
}
Complex(double r,double i)
{
real=r;
imag=i;
}
Complex operator+(const Complex &c2);
Complex operator-(const Complex &c2);
Complex operator*(const Complex &c2);
Complex operator/(const Complex &c2);
Complex operator-();
void display();
private:
double real;
double imag;
};
//下面定义成员函数
Complex Complex::operator+(const Complex &c2)
{
Complex c;
c.real=real+c2.real;
c.imag=imag+c2.imag;
return c;
}
Complex Complex::operator-(const Complex &c2)
{
Complex c;
c.real=real-c2.real;
c.imag=imag-c2.imag;
return c;
}
Complex Complex::operator*(const Complex &c2)
{
Complex c;
c.real=real*c2.real-imag*c2.imag;
c.imag=imag*c2.real+real*c2.imag;
return c;
}
Complex Complex::operator/(const Complex &c2)
{
Complex c;
c.real=((real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag));
c.imag=((imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag));
return c;
}
Complex Complex::operator-()
{
Complex c;
c.real=-real;
c.imag=-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();
cout<<"-c1=";
(-c1).display();
return 0;
}