c++CLASS public protected private 继承

#include <iostream>

using namespace std;

class Inherit//继承

{public:

    string public_str;

    void public_func()

    {cout<<"public_func:"<<public_str<<endl;}

protected:

    string protected_str;

    void protected_func()

    {cout<<"protected_func:"<<protected_str<<endl;}

private:

    string private_str;

    void private_func()

    {cout<<"private_func:"<<private_str<<endl;}

};

/*派生类通过 public 继承，基类的各种权限不变*/

class inheritPublic:public Inherit

{public:

    inheritPublic(){
   

    /*派生类的成员函数，可以访问基类的public成员、protected成员，*/

    public_str=   "public_str   ";

    protected_str="protected_str";

    public_func();

    protected_func();

    /*但是无法访问基类的private成员*/

    //private_str="private_str"; 访问不到 错误

    //private_func();

    }

    void inheritPublicFunc()

    {cout<<"inheritPublicFunc:"<<inheritPublicData<<endl;

    }

    ~inheritPublic()

    {}

private:    string inheritPublicData="kakakaka";

};

/*派生类通过protected继承，基类的public成员在派生类中的

 * 权限变成了protected 。protected和private不变*/

class inheritProtected:protected Inherit

{public:

        inheritProtected()

        {/*派生类的成员函数，可以访问基类的public成员、protected成员，

          但是无法访问基类的private成员*/

            public_str=   "public_str   ";

            protected_str="protected_str";

            public_func();

            protected_func();

            //private_str   ="private_str";

            //private_func();

        }

        void inheritProtectedFunc()

        {cout<<"inheritProtectedFunc:"<<inheritProtectedData<<endl;}

        ~inheritProtected()

        {}

private: string inheritProtectedData="bababa";

};

class inheritPrivate: private Inherit

{public:

    inheritPrivate(){
   

        /*派生类的成员函数，可以访问基类的public成员、protected成员，

         * 但是无法访问基类的private成员*/

        public_str=   "public_str   ";

        protected_str="protected_str";

        public_func();

        protected_func();

        //private_str  ="private_str";

        //private_func();

      }

    void inheritPrivateFunc()

    {cout<<"inheritPrivateFunc:"<<inheritPrivateData<<endl;}

    ~inheritPrivate(){}

private: string inheritPrivateData="cacaca";

};

int main()

{   inheritPublic    iPublic;//数据在派生类内  实例化派生类 将数据通过基类显示出来

    iPublic.inheritPublicFunc();

    cout<<"================iPublic   "<<endl;

    inheritProtected iProtected;

    iProtected.inheritProtectedFunc();

    cout<<"================iProtected"<<endl;

    inheritPrivate   iPrivate;

    iPrivate.inheritPrivateFunc();

    cout<<"================iPrivate  "<<endl;

    cout<<"实例化派生类-> 基类"<<endl;

    iPublic.public_func();

      //iProtected.protected_func();

      //iPrivate.private_func();

    //继承基类的protected； 类的实例对象无法访问

    //任何成员

      //iProtected.public_func();

      //iProtected.protected_func();

      //iProtected.private_func();

    //继承基类的private； 类的实例对象无法访问

    //任何成员

      //iPrivate.public_func();

      //iPrivate.protected_func();

      //iPrivate.private_func();

    cout << "Hello World!" << endl;

    return 0;

}