Define a class "Point" with two instance variables-x and y, representing the Cartesian coordinates of the point. The class should contain a default constructor which initializes a point in the origin and a parameterized constructor which initializes a user-specified point. Create another class "Line" that inherits Point class. The class should include the instance member- a reference variable of Point class. The constructor of Line class, should create a new Point object to denote the end point of the line. The starting point of the line is automatically created when it extends the Point class. The Line class also should include calculateDistance) method to find the length of the line,, thus created. Note: distance=v((x2 - x1)" + (y2- y)) Jrite a main class that tests the above inherited class for an array of objects.

Object passing checklist1. Go over each member function and add the const keyword after their declaration ifthey do not modify any of the class' member variables.2. When accepting objects as parameters, prefer to pass them by reference. Add reference declarator (& before the identifier name of an object parameter.3. If the member function does not modify the parameter, make the parameter constantby using the const keyword. apply the Object Passing Checklist. Modify food.h and volunteer.h to useobject references. Add const and & keywords in the appropriate places of the code.

You will define three objects class Person, BookAuthor, and Book.  Class Person involves a person's identity. Class BookAuthor involves a collection of books or book titles. Class Book involves the number of books in stock , book title and price. Design the three classes:   The classes must use an appropriate inheritance relationship.   Each class must have a constructor. Each class has at least two private data members and you must include accessors.  You must test your classes by creating a BookAuthor object and printing the Person, Book and BookAuthor values from a function you create inside of BookAuthor. Make sure you use the book object correctly and put it inside of BookAuthor. in pytgi

Consider a class "Fan" with two integer data members, "state" (0/1 i.e. on or off) and "speed". 1. Write a parameterized Constructor for this class. 2. Write a member function "changeState( )" which behaves similar to pressing a button i.e. it should change the state of the fan. If it is off (0), calling the function should turn it on (1) and vice versa.. Multi Line Text.

Use the Animal class file given on the final exam module. Use Inheritance and Polymorphism concepts to create the following classes and functions. Create the following classes that derive from the Animal class. Monkey Kangaroo Create a derived class named Spider Monkey whose base class is Monkey. Create constructors for each class. Create destructors for each class. All classes will have the following private instance fields, including Animal legs that will initialize to 0 boolean swim that will initialize to false; All classes will have the following polymorphic methods, including Animal getLegs( ) – this returns the number of legs the animal has makeSount( ) – this outputs the type of sound the animal makes makeSound( ) method will be a virtual function in the Animal class Create an exception in the getLegs( ) method that makes sure the number of legs are valid (only allow positive number amount of legs) Create a main method to demonstrate the all functions including the…

Class A is composed of objects of class B, class B is extended by C& D. There should be a copy constructor in: A, B, C and D C and D only B only O B, C, and D