extends c++

To extend a class in C++, you can use the keyword "extends" followed by the name of the base class. This allows you to inherit the properties and methods of the base class in the derived class.

When a class is extended in C++, the derived class inherits all the member variables and member functions (including constructors and destructors) from the base class. This means that you can use and modify these inherited members in the derived class.

To extend a class, you need to follow these steps:

  1. Create the base class: Start by creating the base class with its member variables and member functions. This will serve as the foundation for the derived class.

  2. Declare the derived class: Declare the derived class by using the "class" keyword followed by the name of the derived class. This will create a new class that will inherit from the base class.

  3. Extend the base class: Use the "extends" keyword followed by the name of the base class in the declaration of the derived class. This establishes the inheritance relationship between the base class and the derived class.

  4. Override base class functions (optional): If you want to modify the behavior of a member function inherited from the base class, you can override it in the derived class. To do this, declare the corresponding member function in the derived class using the same name and signature as the base class function. Use the "override" keyword to indicate that you are intentionally overriding the base class function.

  5. Use the derived class: Once the derived class is defined, you can create objects of the derived class and access its member variables and member functions, as well as those inherited from the base class.

Remember that the derived class can also add additional member variables and member functions that are specific to itself. These will be separate from the ones inherited from the base class.

That's it! You now have an extended class in C++. This allows you to reuse code from the base class while adding new functionality specific to the derived class.