6. Fill in the blanks to the following questions:
(a) OOP stands for Object-_________ programming.
(b) ________ is a template or blueprint from which objects can be instantiated from.
(c) _________ is a subroutine defined within a class to implement a behavior.
(d) An ______ is an instance of class.
(e) _________: When a sub-class inherits the methods and properties of a parent class.
(f) _________: “Hiding” properties and methods of a class from the “outside world” by making these private.

It is common practice in object-oriented programming to make all of a class's:   Question options:

A)  Fields private.

B)  Methods private.

C)  Fields public.

D)  Fields and methods public.

Programming Writing Montreal Maps In the following questions, you will write classes that allow one to suggest a route to get from one point to another on a metro or train line. Note that for all of these questions, we will make the simplifying assumption that the earth is flat and that everything resides in 2 dimensions. (There were metros before Columbus and Galileo, right?) 6. Write a class MetroStation in which you define a new type MetroStation. (10 points) A MetroStation is defined to have the following private properties: • String name This represents the name of the metro station (e.g. Atwater, McGill, etc) • double xPosition This represents the x location of the metro station. • double y Position This represents the y location of the metro station. An MetroStation object should have the following public methods/behaviors defined on it. • A constructor that takes as input a String stationName, a double x, and a double y. The constructor should initialize the properties name, xPosition, and yPosition to these three values respectively • A method getName() which returns the name of the Metrostation. • A method get XPosition () which returns the x location of the Metrostation • A method get Position () which returns the y location of the Metrostation • A method equals (Metrostation other) which returns a boolean representing whether the name property of the this MetroStation is equal to the name property of other.

Answer the following short questions. Your answer should be precise.

1. Can we declare base class constructor or destructor as virtual if yes then why we want to do?
2. How we can declare a class as abstract and why we need abstract classes?
3. Why we cannot able to create objects of abstract classes give reasonable justification of that.   

This question is related to Object orientated programming in c++