Posted: December 7th, 2013

Object Oriented Programming

Description: Scope and Focus: Class and Object Object Oriented Programming – Inheritance and access rights – Method Overriding Contributing to the following CLOs:
CLO #1 Review structured programming concept. CLO #2 Describe the main concepts of the Object Oriented Programming paradigm. CLO #3 Write and
Compile programs that incorporate Object Oriented software constructs such as classes, objects, methods. CLO # 4 Apply object oriented concepts such
as encapsulation, inheritance, polymorphism, and operator overloading. Question 1: (5 marks) Create an object oriented application with C# that
computes the area of a rectangle, and the area and the volume of a cuboid. Based on the inheritance concept, create a base class called Rectangle (The
parent class) and a derived class called Cuboid (The child class) as shown in Figure 1. Figure 1 The formulas that you require for your calculation are as
follows: o Area of a rectangle: (length * width) o Area of a cuboid: (4 * length * width) + (2 * length* length) o Volume of a cuboid: (length * width *
length) The output of the application will look like the following: Question 2: (5 marks) The Question: Write a C# program that implements the following:
Let us define here an abstract super-class named Employee, a first derived class named RegularEmployee and a second derived class named
SalesEmployee. The SalesEmployee class includes an extra property, salesbonus, and overrides the method CalculatePay() in order to take it into
account. 1. The base abstract class Employee contains: ⢠A string attribute name and a protected decimal attribute basepay. Indeed, Basepay is defined
as protected, so that it may be accessed only by this class and derrived classes. ⢠A constructor to set the name and basepay values. ⢠An abstract
method CalculatePay() returning the basepay and can be overridden. 2. The first derived class RegularEmployee from Employee contains: ⢠The
constructor calls the base-class version. ⢠Override the CalculatePay() method. 3. The second derive class SalesEmployee from Employee containing: â
¢ New field salesbonus that will affect the base pay. ⢠The constructor calls the base-class version, and initializes the salesbonus field. ⢠Override the
CalculatePay() method to take bonus into account. 4. The main method of your program, implement the following: ⢠Print the following message: ***
Welcome to Employee program *** ⢠Create an object called employee1 from class RegularEmployee. Pass name and basepay here as Abdulla and
1200 respectively. ⢠Create an object called employee2 from class SalesEmployee. Pass name, basepay and salesbonus here as Mohamed, 1000 and
500 respectively. Display the following messages: The first employee Abdulla earned: 1200 The second employee Mohamed earned: 1500 The final
output of your program should look like the screen shot below
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