第8周项目1（1）-用成员函数实现复数类中的运算符重载

#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);
    void display();
private:
    double real;
    double imag;
};
//下面定义成员函数
Complex Complex::operator+(const Complex &c2)
{
    return Complex(real+c2.real,imag+c2.imag);
}
Complex Complex::operator-(const Complex &c2)
{
    return Complex(real-c2.real,imag-c2.imag);
}
Complex Complex::operator*(const Complex &c2)
{
    return Complex(real*c2.real-imag*c2.imag,real*c2.imag+c2.real*imag);
}
Complex Complex::operator/(const Complex &c2)
{
    return Complex((real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag),(-real*c2.imag+c2.real*imag)/(c2.real*c2.real+c2.imag*c2.imag));
}
void Complex::display()
{
    if(imag>0)
    cout<<real<<"+"<<imag<<"i"<<endl;
    else
        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();
    return 0;
}

第8周项目1（1）-用成员函数实现复数类中的运算符重载

原文：http://blog.csdn.net/q979664557/article/details/45361955