C++ Polymorphism Employee Project - c++

Question

For class I have to adapt a program I wrote last week for polymorphism. Last week it used a specific set of information for the employees but now I have to make it work with polymorphism as well as read/write data from a file, I am completely lost with what I am supposed to be doing, If someone could even point me in the right direction it would be so much help. I can post my current .h and .cpp file for a look at what I have as well as the instructions of what I am supposed to be doing.
.h
#pragma once
#include <string>
using namespace std;
class Employee {
private:
int employeeNumber; // Employee's employee number
string employeeName; //Employee's name
string streetAddress; //Employee's street address
string phoneNumber; //Employee's phone number
double hourlyWage; //Employee's hourly wage
double hoursWorked; //Employee's hours worked
double netPay; //Net pay
double grossPay; //Gross pay
public:
Employee();
Employee(int, string, string, string, double, double);
int getEmployeeNumber();
void setEmployeeNumber(int);
string getEmployeeName();
void setEmployeeName(string);
string getStreetAddress();
void setStreetAddress(string);
string getPhoneNumber();
void setPhoneNumber(string);
double getHourlyWage();
void setHourlyWage(double);
double getHoursWorked();
void setHoursWorked(double);
double calcPay()
{
const int OVER = 40;
double federal = 0.20;
double state = 0.075;
double timeHalf = 1.5;
double grossPay;
double netPay;
if (getHoursWorked() < OVER)
{
grossPay = getHoursWorked() * getHourlyWage();
netPay = grossPay - (grossPay * federal) - (grossPay * state);
}
if (getHoursWorked() >= OVER)
{
grossPay = getHoursWorked() * ((getHourlyWage() * timeHalf));
netPay = grossPay - (grossPay * federal) - (grossPay * state);
}
return netPay;
}
};
.cpp
#include <iostream>
#include <string>
#include <fstream>
#include "Employee.h"
#include <iomanip>
using namespace std;
Employee::Employee()
{
employeeNumber = 0; // Employee's employee number
employeeName = ""; //Employee's name
streetAddress = ""; //Employee's street address
phoneNumber = ""; //Employee's phone number
hourlyWage = 0; //Employee's hourly wage
hoursWorked = 0;
grossPay = 0;
netPay = 0;
}
Employee::Employee(int empNum, string empName, string streetAddress,
string phoneNumber, double hourlyWage, double hoursWorked)
{
employeeNumber = empNum;
employeeName = empName;
this->streetAddress = streetAddress;
this->phoneNumber = phoneNumber;
this->hourlyWage = hourlyWage;
this->hoursWorked = hoursWorked;
grossPay = 0;
netPay = 0;
}
int Employee::getEmployeeNumber()
{
return employeeNumber;
}
void Employee::setEmployeeNumber(int empNum)
{
employeeNumber = empNum;
}
string Employee::getEmployeeName()
{
return employeeName;
}
void Employee::setEmployeeName(string empName)
{
employeeName = empName;
}
string Employee::getStreetAddress()
{
return streetAddress;
}
void Employee::setStreetAddress(string strtAddrs)
{
streetAddress = strtAddrs;
}
string Employee::getPhoneNumber()
{
return phoneNumber;
}
void Employee::setPhoneNumber(string phnNum)
{
phoneNumber = phnNum;
}
double Employee::getHourlyWage()
{
return hourlyWage;
}
void Employee::setHourlyWage(double hrWage)
{
hourlyWage = hrWage;
}
double Employee::getHoursWorked()
{
return hoursWorked;
}
void Employee::setHoursWorked(double hrWorked)
{
hoursWorked = hrWorked;
}
void printCheck(Employee ee)
{
cout << "\n\n--------------------- Fluff Shuffle Electronics -------------------------------- \n";
cout << " Pay to the order of " << ee.getEmployeeName() << "...........................$" << ee.calcPay();
cout << "\n\n United Bank of Eastern Orem \n";
cout << "------------------------------------------------------------------------------- \n";
cout << " Hours Worked: " << ee.getHoursWorked();
cout << "\n Hourly Wage: " << ee.getHourlyWage();
cout << endl << endl;
}//End of function
void read(ifstream &in)
{
Employee employees[10];
int counter = 0;
while (in.read((char *)&employees[counter++], sizeof(Employee)))
for (int i = 0; i<counter; i++)
{
printCheck(employees[i]);
}
in.close();
}
void write(ofstream &out)
{
Instantiate your employees here first, then call their functions.
Employee joe(37, "Joe Brown", "123 Main St.", "123-6788", 10.00,
45.00);
printCheck(joe);
Employee sam(21, "Sam Jones", "45 East State", "661-9000", 12.00,
30.00);
printCheck(sam);
Employee mary(15, "Mary Smith", "12 High Street", "401-8900", 15.00, 40.00);
printCheck(mary);
out.write((char *)(&joe), sizeof(Employee));
out.write((char *)(&sam), sizeof(Employee));
out.write((char *)(&mary), sizeof(Employee));
out.close();
}
//Main function
int main()
{
int choice;
string filename;
while (true)
{
cout << "\nThis program has two options:\n";
cout << "1 - Create a data file, or\n";
cout << "2 - Read data from a file and print paychecks\n";
cout << "\n Press any other key to quit..........\n";
cout << "Please enter <1> to create a file or <2> to print
checks: ";
cin >> choice;
if (choice == 1)
{
cout << "Enter the file name: ";
cin >> filename;
ofstream out(filename);
out.open(filename.c_str(), ios::binary);
write(out);
}
else if (choice == 2)
{
cout << "Enter the file name: ";
cin >> filename;
ifstream in(filename);
in.open(filename.c_str(), ios::binary);
read(in);
}
else break;
//Calls function to displays information
}
}//End of main
These are the instructions for the project.
This is the diagram it refers to

Answer 1

To start: create two classes derived from Employee:
class HourlyEmployee: public Employee
{
};
class SalariedEmployee: public Employee
{
}
and move members related to Hourly working from Employee to HourlyEmployee, then add members related to Salary to SalariedEmployee (WeeklySalary).
This way (removing attributes related to hourly working) you make Employee class more general that can be a base for other kind of employees to (SalariedEmployee).
When you derive HourlyEmployee or SalariedEmployee from Employee, you mean they are kind of Employee, so members that Employee has, they will inherit automatically.