When deriving a class from a base class, the base class may be inherited through public, protected or private inheritance. … A base class’s private members are never accessible directly from a derived class, but can be accessed through calls to the public and protected members of the base class.
How are protected members of a base class accessed in the derived class when inherited privately Mcq?
7. When a base class is privately inherited by derived class public members of the base class can only be accessed by the ……… of the derived class. 8. When a protected member is inherited in public mode, it becomes ……….. in the derived class too and therefore is accessible by member functions of the derived class.
How are protected members of a base class accessed in the derived class when inherited privately C++?
If a class is derived privately from a base class, all protected base class members become private members of the derived class. Class A contains one protected data member, an integer i . Because B derives from A , the members of B have access to the protected member of A .
How are protected members of base class accessed in derived class?
Protected members that are also declared as static are accessible to any friend or member function of a derived class. Protected members that are not declared as static are accessible to friends and member functions in a derived class only through a pointer to, reference to, or object of the derived class.
What is the accessibility of a protected member of a base class which is inherited privately?
With protected inheritance, the public and protected members become protected, and private members stay inaccessible. With private inheritance, all members from the base class are inherited as private. This means private members stay private, and protected and public members become private.
What is string * x y?
Explanation: * is used as dereferencing operator, used to read value stored at the pointed address. 3. Choose the right option. string* x, y; a) x is a pointer to a string, y is a string.
What does derived class does not inherit from the base class?
When you define a class to derive from another class, the derived class implicitly gains all the members of the base class, except for its constructors and finalizers. … These members include a constructor, because constructors aren’t inherited.
What is the difference between private and protected inheritance?
protected inheritance makes the public and protected members of the base class protected in the derived class. private inheritance makes the public and protected members of the base class private in the derived class.
Which members can be accessed in derived class from the base class?
A derived class can access all the non-private members of its base class. Thus base-class members that should not be accessible to the member functions of derived classes should be declared private in the base class. Constructors, destructors and copy constructors of the base class.
Can private class be inherited?
Private Members in a Superclass
A subclass does not inherit the private members of its parent class. However, if the superclass has public or protected methods for accessing its private fields, these can also be used by the subclass.
Why can’t I access a protected member from a derived class?
8 Answers. A class can only access protected members of instances of this class or a derived class. It cannot access protected members of instances of a parent class or cousin class. In your case, the Derived class can only access the b protected member of Derived instances, not that of Base instances.
Can base class access members of derived class give reasons?
Explanation: A base class pointer can point to a derived class object, but we can only access base class member or virtual functions using the base class pointer because object slicing happens when a derived class object is assigned to a base class object.
How can we access protected and private members of a class?
Protected members can only be accessed by descendants of the class, and by code in the same module. Private members can only be accessed by the class they’re declared in, and by code in the same module.