Chapter 11.3, Problem 11.10CP

Explanation of Solution

Abstract class:

Abstract class is a class which acts as a base class for derived class that may contain one or more abstract methods and there is no need to instantiate, but it requires the derived class to provide implementations for abstract methods.

• The keyword “abstract” is used to create an abstract class.
• A class is declared as abstract when the methods inside the class are declared as abstract without implementation.
• An abstract class is a set of abstract members and non-abstract members.
• The purpose of abstract class is to provide the common features to its derived class and need not be instantiated. That is, programmer won’t be able to create an object for abstract class.
• It can only contain the declaration part in abstract class.
• So the abstract method must be overridden in derived class to implement the abstract methods.
  • The programmer must implement abstract method in derived class using keyword “override”...