#include <iostream>

using namespace std;

class A

{

public:

    A(int x){i=x;}

    int i;

    A &operator+(A &p)

    {

        this->i+=p.i;

        return *this;

    }

};

void main()

{

    A a(),b(),c();

    c=a+b;

    cout<<c.i<<endl;

    system("pause");

}

#include <iostream>

using namespace std;

class A

{

public:

    A(int x){i=x;}

    int i;

    A &operator++()

    {

        this->i++;

        return *this;

    }

};

void main()

{

    A a();

    a++;

    cout<<a.i<<endl;

    system("pause");

}

#include <iostream>

using namespace std;

class A

{

public:

    A(int x){i=new int;*i=x;}

    ~A(){delete i;i=;}

    A(const A&p)

    {

        i=new int;

        *i=*(p.i);

    }

    int *i;

    A &operator=(A &p)

    {

        *i=*(p.i);

        return *this;

    }

    int pp(){return *i;}

};

void main()

{

    A a(),b();

    a=b;

    cout<<a.pp()<<endl;

    system("pause");

}

#include <iostream>

using namespace std;

class A

{

public:

    A(int x,int y){rx=x;ry=y;}

    int rx;

    int ry;

};

ostream &operator << (ostream &s,const A &c)//cout是ostream的对象

{

    s<<c.rx;//使用cout输出对象的值,语句可以直接翻译成cout<<c.rx

    s<<c.ry;//使用cout输出对象的值,语句可以直接翻译成cout<<c.ry

    return s;//返回cout

}

void main()

{

    A a(,),b(,);

    cout<<a<<b;//(ostream &s,const A &c)==(cout,a)

    system("pause");

}

#include <iostream>

using namespace std;

class A

{

public:

    A(int x,int y){rx=x;ry=y;}

    friend ostream &operator << (ostream &s,const A &c)

    {

        s<<c.rx;

        s<<c.ry;

        return s;

    }

private:

    int rx;

    int ry;

};

void main()

{

    A a(,),b(,);

    cout<<a<<b;

    system("pause");

}

#include <iostream>

using namespace std;

class A

{

public:

    A(int x){rx=x;}

    int operator++()          //++i

    {

        this->rx++;           //其实这里this指针可以不用写因为你直接写rx++效果也是一样的，编译器会在编译的时候自动的为你加上this

        return rx;            //但是刚开始学语言的时候建议写一下可以加深this指针的概念

    }

    int operator++(int)       //i++

    {

        int i=;

        i=this->rx;

        this->rx++;

        return i;

    }

    friend ostream &operator << (ostream &s,const A &c)

    {

        s<<c.rx;

        return s;

    }

private:

    int rx;

};

void main()

{

    A a(),b();

    cout<<a++<<endl;

    cout<<++b<<endl;

    system("pause");

}

#include <iostream>

using namespace std;

class A

{

public:

    A(int x){rx=x;}

    int operator++()        //++i

    {

        this->rx++;            //其实这里this指针可以不用写因为你直接写rx++效果也是一样的，编译器会在编译的时候自动的为你加上this

        return rx;            //但是刚开始学语言的时候建议写一下可以加深this指针的概念

    }

    int operator++(int)        //i++

    {

        int i=;

        i=this->rx;

        this->rx++;

        return i;

    }

    friend istream &operator >> (istream &s,A &c)        //输入操作符重载

    {

        s>>c.rx;

        return s;

    }

    friend ostream &operator << (ostream &s,const A &c)  //输出操作符重载

    {

        s<<c.rx;

        return s;

    }

private:

    int rx;

};

void main()

{

    A a(),b();

    cin>>a;

    cin>>b;

    cout<<a++<<endl;

    cout<<++b<<endl;

    system("pause");

}