C++ 运算符重载

#include 
 
 
using namespace std;
 
 
//定义一个复数类 5 + 3i
class Complex
{
private:
    int real;         //实部
    int vir;          //虚部
 
 
public:
    Complex() {}
    Complex(int r, int v):real(r), vir(v) {}         //有参构造
 
 
    //定义展示函数
    void show()
    {
        if(vir>=0)
        {
            cout<real - R.real;
        c.vir = this->vir - R.vir;
 
 
        return c;
    }
 
 
    //成员函数版实现关系运算符的重载：实部>实部  && 虚部>虚部
    bool operator>(const Complex &R)const
    {
        return this->real>R.real&&this->vir>R.vir;
    }
 
 
    //重载中括号运算符
    int & operator[](int index)
    {
        if(index == 0)
        {
            return real;          //返回实部
        }else if(index == 1)
        {
            return vir;           //返回虚部
        }
    }
 
 
 
 
    //重载+=运算符：实部+=实部   虚部+=虚部
    Complex & operator+=(const Complex &R)
    {
        this->real += R.real;
        this->vir += R.vir;
 
 
        return *this;                //返回自身的引用
    }
 
 
    //重载负号运算符： 实部= -实部， 虚部 = -虚部
    Complex operator-()
    {
        Complex c;
        c.real = -this->real;
        c.vir = -this->vir;
 
 
        return c;
    }
 
 
    //重载前置自增运算符重载函数:实部 = 实部+1   虚部=虚部+1
    Complex &operator++()
    {
        ++this->real;
        ++this->vir;
 
 
        return *this;
    }
 
 
    //重载后置自增运算符重载函数：实部 = 实部+1   虚部=虚部+1
    Complex operator++(int)
    {
        Complex c;
 
 
        c.real = this->real++;
        c.vir = this->vir++;
 
 
        return c;
    }
 
 
 
 
    //将全局函数版实现的输出运算符重载函数设置成友元
    friend ostream &operator<<(ostream &L, Complex &c);
 
 
    //重载小括号运算符，做一个仿函数
    void operator()(string s)
    {
        cout<=0)
    {
        L< c2)              //调用关系运算符重载函数
    {
        cout<<"yes"<