国庆day4

#include 
 
using namespace std;
 
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<" + "<"i"<
        }else
        {
            cout<"i"<
        }
    }
 
 
    //全局函数版实现加运算符重载
    friend const Complex operator+ (const Complex &L, const Complex &R);
 
 
    //成员函数版实现运算符重载
    const  Complex  operator- ( const Complex  &R)const
    {
        Complex c;
 
 
        c.real = this->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<
    }
 
    //重载小括号运算符，做一个仿函数
    void operator()()
    {
        cout<<520<<" "<<1314<
    }
 
    //重写类型转换运算符
    operator int()
    {
        return real;         //将该数据类型向int类型转换后，使用的是real的值
    }
 
};
 
//全局函数版实现加号运算符重载：实部+实部  虚部+虚部
const Complex operator+ (const Complex &L, const Complex &R)
{
    //定义一个临时空间
    Complex c;
 
 
    c.real = L.real + R.real;
    c.vir = L.vir + R.vir;
 
 
    return c;
}
 
 
//重载输出运算符函数
ostream &operator<<(ostream &L, Complex &c)
{
    if(c.vir>=0)
    {
        L<" + "<"i"<
    }else
    {
        L<"i"<
    }
 
    //返回左操作数自身的引用
    return L;
}
 
int main()
{
    Complex c1(5,3);
    c1.show();                    //5+3i
 
    Complex c2(2,-1);
    c2.show();                      //2-1i
 
    Complex c3 = c1-c2;             //调用加法运算符重载函数  c1.operator-(c2)
 
    c3.show();                      //3+4i
 
    if(c3 > c2)              //调用关系运算符重载函数
    {
        cout<<"yes"<
    }else
    {
        cout<<"no"<
    }
 
    c3[0] = 5;               //将实部进行修改成5,调用中括号运算符重载
    c3.show();                  //5+4i
 
    c3 += c2;            //调用+=运算符重载函数
    c3.show();             //7+3i
 
    Complex c4 = -c3;      //调用-号运算符重载
    c4.show();              //-7 - 3i
    c3.show();            //7+3i
 
    Complex c5 = ++c3;          //调用前置自增运算符重载函数
    c5.show();                  //8+4i
    c3.show();                   //8+4i
 
    Complex c6 = c3++;           //调用后置自增运算符重载函数
    c6.show();                   //8+4i
    c3.show();                   //9+5i
 
    cout<//cout.operator<<(c3)
 
    c3("hello world");      //c3.operator()("hello world");
    c3();
 
    int num = (int)c3;            //调用类型转换运算符重载函数
    cout<<"num = "<
    return 0;
}