來自：ywsing0
時間：Sat 2018-07-21 06:54:01
Sing Yiu Wah >>
derived class can always access (protected) members of the base class. this happens no matter virtual or not.
virtual is to let the derived class change the behaviours of certain member functions... implement them as brand new (as in pure virtual), or re-implement in other ways, or e.g. call the base method but add some logic before/after, etc.
this talks about when u casted the derived object to a pointer to the base class. omg why so complex...