Which type of inheritance is also known as virtual inheritance?

This situation is sometimes referred to as diamond inheritance (see Diamond problem) because the inheritance diagram is in the shape of a diamond. Virtual inheritance can help to solve this problem.

Are virtual functions inherited?

Base classes can’t inherit what the child has (such as a new function or variable). Virtual functions are simply functions that can be overridden by the child class if the that child class changes the implementation of the virtual function so that the base virtual function isn’t called.

What type of functions can be virtual?

A virtual function can be a friend function of another class. Virtual functions should be accessed using pointer or reference of base class type to achieve run time polymorphism. The prototype of virtual functions should be the same in the base as well as derived class.

Which type of inheritance need virtual base classes?

Virtual base classes are used in virtual inheritance in a way of preventing multiple “instances” of a given class appearing in an inheritance hierarchy when using multiple inheritances. Need for Virtual Base Classes: Consider the situation where we have one class A .

What is virtual inheritance with example?

Virtual inheritance is used when we are dealing with multiple inheritance but want to prevent multiple instances of same class appearing in inheritance hierarchy. From above example we can see that “A” is inherited two times in D means an object of class “D” will contain two attributes of “a” (D::C::a and D::B::a).

What is virtual function explain the virtual function with example?

A virtual function is a member function that you expect to be redefined in derived classes. When you refer to a derived class object using a pointer or a reference to the base class, you can call a virtual function for that object and execute the derived class’s version of the function.

What is virtual inheritance give example?

What is virtual function example?

What is virtual function?

Can multiple inheritance have virtual function?

Multiple Inheritance Part III by Herb Sutter describes a good way of doing that. It might help you decide on your design. First question, yes, B and C can define fn() as a virtual function.

What is pure virtual function?

A pure virtual function or pure virtual method is a virtual function that is required to be implemented by a derived class if the derived class is not abstract. Classes containing pure virtual methods are termed “abstract” and they cannot be instantiated directly.

What is a virtual function how virtual function relates to inheritance?