Well done! You learned a lot very quickly, so let’s do a review:

• Inheritance is a way to avoid duplication across multiple classes.
• In inheritance, one class inherits the members of another class.
• The class that inherits is called a subclass or derived class. The other class is called a superclass or base class.
• We can access a superclass’ members using base. This is very useful when calling the superclass’ constructor.
• We can restrict access to a superclass and its subclasses using protected.
• We can override a superclass member using virtual and override.
• We can make a member in a superclass without defining its implementation using abstract. This is useful if every subclass’ implementation will be different.