c++   Implement an abstract class Employee with a data member name. Implement constructors, and an output function.

answer in c++

In C++ write the definition of the class professorType, inherited from the class personType, defined in Chapter 10, with an additional data member to store a professor’s highest degree. Add appropriate constructors and member functions to initialize, access, and manipulate the data members.   Write a test program to initialize, access, and manipulate the data members. For example, the mathProfessor holds a Doctorate degree.

5. Is it compulsory for a class, which has been declared as abstract, to have at least one abstract method?

What is the role of abstract classes and interfaces in achieving polymorphism?

State a circumstance in which you would prefer an interface over an abstract class. Also, State a circumstance in which you would prefer an abstract class over an interface.

Write program in C++ using inhertiance and polymorphism. A car dealership wants you to keep track of their sold and leased vehicles. You have realized that all vehicles have a make, model and vehicle identification number so you are going to factor those attributes out and put them in the base class as private attributes. Additionally you realize that you need to create two derived classes: one that keeps track of vehicles that are sold and the other that keeps track of ones that are leased. Vehicles that are sold have a sale date and sale amount. Vehicles that are leased have a monthly lease payment and terms of the lease (number of years). For all classes, create a proper overloaded constructor and display method that properly displays the class’s attributes. For your display method make sure you are using proper run-time polymorphism techniques so that your code calls the correct display methods. Complete main.cpp and follow comments for instruction Given code of .cpp and .h classes…

Write a C++ a class definition for an abstract data type called Graph that models anundirected graph. Some implementation details: Create code for a .cpp file with main function and code for a .h file with classes • Loops are allowed but multiple edges are not allowed.• Vertices are labeled by number from 0 to n-1 where n is the number of vertices in thegraph.Implement the following public member functions.• A constructor that creates an empty graph.• An appropriate destructor.• void load(char *filename): Creates the graph using the file passed into thefunction. The format of the file is described later. You may assume load is only calledonce for a graph. • void display(): Displays the graph's adjacency matrix to the screen.• void displayDFS(int vertex): Displays the result of a depth first searchstarting at the provided vertex. When you have a choice between selecting two vertices,pick the vertex with the lower number.• void displayBFS(int vertex): Displays the result of a breadth…