So in above program, the derived class cannot access the member x which is private in the base class, however, derive class has access to the protected and public members of the base class.
So the. Hence the function showdata in derived class can access the public and protected member of the base class. If protected access specifier is used while deriving class then the public and protected data members of the base class becomes the protected member of the derived class and private member of the base class are inaccessible. In this case, the members of the base class can be used only within the derived class as protected members except for the private members.
Who can access private members in a class? Private: The class members declared as private can be accessed only by the functions inside the class. They are not allowed to be accessed directly by any object or function outside the class. Only the member functions or the friend function are allowed to access the private data members of a class. It is declared using the virtual keyword.
But, when base class pointer contains the address of the derived class object, always executes the base class function. It is only through these differences compiler can differentiate between the functions. It is used to achieve runtime polymorphism. It enables you to provide specific implementation of the function which is already provided by its base class. A public member is accessible from anywhere outside the class but within a program. You can set and get the value of public variables without any member.
The default access specifier for unions and structs is public. In the Person class from the previous topic we used only public access specifiers for all data members: Table of Contents. See also. Create References Memory Address. Create Pointers Dereferencing Modify Pointers.
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