SDSU Programming Worksheet

Description

Programming Assignment #4: classes, composition, subclasses, inheritance, polymorphism.
1. Write the code for  the following classes

(All attributes in all classes must be private)

Emp (short for Employee)

The class Emp has 3 subclasses: 1. SalEmp (short for Salaried Employe), 2. HourlyEmp,

3. CommEmp (short for commission employee).

The class CommEmp has one subclass, BpCommEmp (short for base plus commission

Employee).

There is also a BusinessCar class

Class Emp

Attributes: empName, minSalary (short for minimum salary)

Methods: besides the usual methods (constructor, getters, setters, as needed), the class Emp has the

following 2 methods:

earnings(), which returns minSalary

displayInfo(), which displays name and minSalary

class SalEmp

Attribute: monthlySalary

Methods: besides the usual methods (constructor, getters, setters, as needed), the class EmpSal

has the following 2 methods:

earnings(), which returns the greater of minSalary and monthlySalary

displayInfo(), which displays name, monthlySalary,  earnings()

class HourlyEmp

Attribute: hours, rate

Methods: besides the usual methods (constructor, getters, setters, as needed), the class EmpSal

has the following 2 methods:

earnings(), which returns the greater of minSalary and hours*rate

displayInfo(), which displays name, hours, rate ,  earnings()

class CommEmp

Attribute: sales, rate

Methods: besides the usual methods (constructor, getters, setters, as needed), the class EmpSal

has the following 2 methods:

earnings(), which returns the greater of minSalary and sales*rate

displayInfo(), which displays name, sales, rate ,  earnings()
class BpCommEmp

Attribute: baseSalary, car (car is a  BusinessCar object )

Methods: besides the usual methods (constructor, getters, setters, as needed), the class EmpSal

has the following 2 methods:

earnings(), which returns sales*rate+ baseSalary

displayInfo(), which displays name, sales, rate ,  earnings(), car info

class BusinessCar

attributes: make,  model, year

methods: as needed

2. Instantiate the following objects (in main()) and display the information for all objects, using the

method dispayInfo()  (car info to be provided via displayInfo())

Class Emp   (empName,minSalary)

Adele   1500

Burt  1500

SalEmp (empName,monthlySalary, minSalary)

Carol  2000   1200

Diane  2000  1200

HourlyEmp (empName,hours, rate, minSalary)

Fonda 200 15  1000

CommEmp  (empName,sales, rate, minSalary)

Doug  200000  0.10  1000

BpCommEmp (empName, sales, rate, baseSalary, car)

Grace 300000 0.2   1500  car: Toyota  Lexus 2015

Mike 200000 0.2   3000 car: Toyota  Camry 2015

3. (extra credit) Polymorphism

a. Display the information for all employees using polymorphism

b. increase the baseSalary of BpCommEmp by 10%

Deliverables. Upload to Canvas:

The program (as  py files): all classes, and main() file

The output of program execution for questions 2 and 3 (extra credit for question 3)

Explanation & Answer:
3 pages

Tags:
programming

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