第八周————运算符重载（三）

#include <iostream>

using namespace std;

#include <iostream>

using namespace std;

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+(double x,Complex &c2);
    friend Complex operator+(Complex &c1,double x);
    friend Complex operator-(Complex &c1,Complex &c2);
    friend Complex operator-(double x,Complex &c2);
    friend Complex operator-(Complex &c1,double x);
    friend Complex operator*(Complex &c1,Complex &c2);
    friend Complex operator*(double x,Complex &c2);
    friend Complex operator*(Complex &c1,double x);
    friend Complex operator/(Complex &c1,Complex &c2);
    friend Complex operator/(double x,Complex &c2);
    friend Complex operator/(Complex &c1,double x);
    void display();
private:
    double real;
    double imag;
};
//下面定义成员函数
Complex operator+(Complex &c1,Complex &c2)
{
    return Complex(c1.real+c2.real,c1.imag-c2.imag);
}
Complex operator+(double x,Complex &c2)
{
    return Complex(x+c2.real,c2.imag);
}
Complex operator+(Complex &c1,double x)
{
    return Complex(c1.real+x,c1.imag);
}
Complex operator-(Complex &c1,Complex &c2)
{
    return Complex(c1.real-c2.real,c1.imag-c2.imag);
}
Complex operator-(double x,Complex &c2)
{
    return Complex(x-c2.real,0-c2.imag);
}
Complex operator-(Complex &c1,double x)
{
    return Complex(c1.real-x,c1.imag);
}
Complex operator*(Complex &c1,Complex &c2)
{
    Complex c;
    c.real=c1.real*c2.real-c1.imag*c2.imag;
    c.imag=c1.imag*c2.real+c1.real*c2.imag;
    return c;
}
Complex operator*(double x,Complex &c2)
{
    return Complex(x*c2.real,x*c2.imag);
}
Complex operator*(Complex &c1,double x)
{
    return Complex(c1.real*x,c1.imag*x);
}
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.imag*c2.real+c1.real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);
    return c;
}
Complex operator/(double x, Complex &c2)
{
    Complex c(x,0);
    return c/c2;
}
Complex operator/(Complex &c1, double x)
{
    Complex c(x,0);
    return c1/c;
}
void Complex::display ()
{
    cout<<"("<<real<<","<<imag<<")"<<endl;
}

//下面定义用于测试的main()函数
int main()
{
    Complex c1(3,4),c2(5,-10),c3;
    double x=11;
    cout<<"c1="; c1.display();
    cout<<"c2="; c2.display();
    cout<<"x="<<x<<endl;
    c3=c1+c2;
    cout<<"c1+c2="; c3.display();
    cout<<"c1+x=";    (c1+x).display();
    cout<<"x+c1=";    (x+c1).display();
    c3=c1-c2;
    cout<<"c1-c2="; c3.display();
    cout<<"c1-x=";    (c1-x).display();
    cout<<"x-c1=";    (x-c1).display();
    c3=c1*c2;
    cout<<"c1*c2="; c3.display();
    cout<<"c1*x=";    (c1*x).display();
    cout<<"x*c1=";    (x*c1).display();
    c3=c1/c2;
    cout<<"c1/c2=";   c3.display();
    cout<<"c1/x=";    (c1/x).display();
    cout<<"x/c1=";    (x/c1).display();

    return 0;
}

第八周————运算符重载（三）,布布扣,bubuko.com

第八周————运算符重载（三）

原文：http://blog.csdn.net/u012313437/article/details/23755447