Definition

C++ Virtual Function

• Constructors

  • A derived object contains sub-objects corresponding to the data members inherited from each base class
    • No guarantees about how these are laid out in memory, not even contiguousness between sub-objects
  • A derived class does not inherit the base class’ constructor

    • The derived class must have its own constructor

    • A default constructor for the derived class first invokes the default constructor of the base class and then initializes the derived class’ member variables

    • The base class constructor is invoked before the constructor of the derived class

      • You can use the initialization list of the derived class to specify which base class constructor to use

      

• Destructors

  • The destructor of a derived class
    • First runs body of the destructor
    • Then invokes of the destructor of the base class