How OOP works in C++

Inheritance• What it is and why it is needed• Protected members• Order of calling constructors/destructors• Types of inheritance– public– protected– private

• Methods overload

Virtual methods• Pointers to base class can point to derived

object• Why it is needed. Method overriding• Calling basic class methods• Do not call virtual methods in

constructor/destructor• Virtual destructors

Pure virtual methods• Pure virtual methods• Do NOT call virtual methods in

constructor/destructor • Do not call methods which call virtual

methods in constructor/destructor

Interfaces• What is called interface• Why it is needed

C++11 keywords• override• final

Forward declaration• What is it• Why we need it