c++之private、protect、public Inheritance（继承）

• Protected and public members(data and function) of a base class are accessible from a derived class(for all three: public, protected and private inheritance).

无论哪种继承，子类内部均可访问protect 和 public成员

• Objects of derived class with private and protected inheritance cannot access any data member of a base class.

protect、private继承类的实例对象无法访问基类的任何数据

• Objects of derived class with public inheritance can access only public member of a base class.

public继承类的实例对象自能访问基类的public数据

详情参见http://www.programiz.com/cpp-programming/public-protected-private-inheritance