C++ classes have access control operators that designate the scope of class members: public and private. Public members are accessible everywhere; private members can only be accessed from within the same instance of the class or from friends classes. If a class member is protected, it can be accessed by friends and inherited classes.

In C++, an object is an instance of a class that encapsulates data and functionality pertaining to that data. Only non abstract classes can be instanced. If a class is abstract it defines the needed behavior to its derivative classes.

For a C++ class, a constructor is a special kind of method that enables control regarding how the objects of a class should be created. Different class constructors can be specified for the same class, but each constructor signature must be unique.

For a C++ class, a destructor is a special method that handles object destruction, generally focused on preventing memory leaks. Class destructors don’t take arguments as input and their name is always preceded by a tilde (~).