ex15_20_Base.h

/*
=================================================================================

C++ Primer 5th Exercise Answer Source Code
Copyright (C) 2014-2015 github.com/pezy/Cpp-Primer

Base,
Pub_Derv, Priv_Derv, Prot_Derv
Derived_from_Public, Derived_from_Private, Derived_from_Protected

If you have questions, try to connect with me: pezy<urbancpz@gmail.com>

=================================================================================
*/

#ifndef CP5_EX15_20_BASE_H_
#define CP5_EX15_20_BASE_H_

inline namespace EX20 {

class Base {
protected:
    int prot_mem;
private:
    char priv_mem;
};

class Pub_Derv : public Base {
    void memfcn(Base &b) { b = *this; }
    int f() { return prot_mem; }
};

class Priv_Derv : private Base {
    void memfcn(Base &b) { b = *this; }
    int f1() const { return prot_mem; }
};

class Prot_Derv : protected Base {
    void memfcn(Base &b) { b = *this; }
    int f2() { return prot_mem; }
};

struct Derived_from_Public : public Pub_Derv {
    void memfcn(Base &b) { b = *this; }
    int use_base() { return prot_mem; }
};

struct Derived_from_Private : public Priv_Derv {
    // void memfcn(Base &b) { b = *this; } // error: 'Base' not accessible because 'Priv_Derv' uses 'private' to inherit from 'Base'
};
struct Derived_from_Protected : public Prot_Derv {
    void memfcn(Base &b) { b = *this; }
};
}

#endif