Can virtual function be protected in C++?
Now in the case where the virtual method needs to super-message its base class’ corresponding virtual method such as say a Save method – which has to pass through all virtual methods in the chain of inheritance in order to save data corresponding to each level of derivation – we have no option but to use a protected …
What is protected virtual?
protected means that it is visible only inside this class and classes derived from it. virtual means that it can be overriden in derived classes.
Can C++ private be virtual?
In C++, virtual functions can be private and can be overridden by the derived class.
Can pure virtual function be protected?
A protected pure virtual doesn’t make sense because you can’t ever invoke the base class’s corresponding method.
What is protected in C++?
The protected keyword specifies access to class members in the member-list up to the next access specifier ( public or private ) or the end of the class definition. Class members declared as protected can be used only by the following: Member functions of the class that originally declared these members.
Can methods be private C++?
All methods of derived classes including the destructor should be private. Constructors must be public, but they’re not methods of the class.
What is virtual method in C++?
A ‘virtual’ is a keyword preceding the normal declaration of a function. When the function is made virtual, C++ determines which function is to be invoked at the runtime based on the type of the object pointed by the base class pointer.
What is protected unity?
protected; Allow a member item to only be accessed from internal or derived source. private; Allow a member item to only be accessed from its owner.
Can a private virtual method be overridden in C++?
C++ has access control, but not visibility control. This means that private functions are visible but not accessible. A private virtual function can be overridden by derived classes, but can only be called from within the base class.
What is protected visibility in C++?
Protected Visibility mode: If we derive a subclass from a Protected base class. Then both public member and protected members of the base class will become protected in the derived class.
What does Protected mean in C++?