How do you write a base class in C++?

base (C# Reference) The base keyword is used to access members of the base class from within a derived class : Call a method on the base class that has been overridden by another method. Specify which base-class constructor should be called when creating instances of the derived class.

Parent class is the class being inherited from, also called base class. Child class is the class that inherits from another class, also called derived class .

So, the short answer to your question: C++ doesn’t have a base-class because, having parametric polymorphism through templates, it doesn’t need to.

Syntax 1: class B : virtual public A { }; Syntax 2: class C : public virtual A { }; Note: virtual can be written before or after the public. Now only one copy of data/function member will be copied to class C and class B and class A becomes the virtual base class.

Definitions: A class that is derived from another class is called a subclass (also a derived class, extended class, or child class). The class from which the subclass is derived is called a superclass (also a base class or a parent class).

The class whose members are inherited is called the base class, and the class that inherits those members is called the derived class .

A base class is also called parent class or superclass. Derived Class: A class that is created from an existing class . The derived class inherits all members and member functions of a base class. The derived class can have more functionality with respect to the Base class and can easily access the Base class.22 Haz 2021