1. Give an example of polymorphism. Write a method in C# in a base class so that it can be overridden in a derived class, and provide/write that method. (Should only contain two methods)

 

2. Consider the following section of code from the definition of class OfficeBuilding.

 

public class OfficeBuilding

{

public int sqrFeet;

private string name;

protected double cost;

public OfficeBuilding() { … }

protected bool isBuilt(){ … }

public void moveIn(){ … }

public double rentSpace(){ … }

private int renovate(int days) { … }

 

a. Which members/methods are visible to (accessible from) OfficeBuilding and its subclasses?

b. Which members/methods are visible to (accessible from) only the OfficeBuilding class?

c. Which members/methods are visible to (accessible from) any class?