C++

Using the Employee class from Worked Example 10.1 , form a derived class Volunteer of Employee and provide a constructor Volunteer(string name) that sets the salary to 0.

Don't forget to add a line of code in the main() to construct a Volunteer object. Something like this:

staff.push_back(new Volunteer("Hernandez, Marie"));

//Worked Example10.1

#include

#include

#include

using namespace std;

/**

An employee with a name and a mechanism for computing weekly pay.

*/

class Employee

{

public:

/**

Constructs an employee with an empty name.

*/

Employee();

/**

@param employee_name the name of this employee

*/

void set_name(string employee_name);

/**

@return the name of this employee

*/

string get_name() const;

/**

Computes the pay for one week of work

@param hours_worked the number of hours worked in the week

@return the pay for the given number of hours

*/

virtual double weekly_pay(int hours_worked) const;

private:

string name;

};

Employee::Employee()

{

}

void Employee::set_name(string employee_name)

{

name = employee_name;

}

string Employee::get_name() const

{

return name;

}

double Employee::weekly_pay(int hours_worked) const

{

return 0;

}

//....................................................................

class HourlyEmployee : public Employee

{

public:

/**

@param name the name of this employee

@param wage the hourly wage

*/

HourlyEmployee(string name, double wage);

virtual double weekly_pay(int hours_worked) const;

private:

double hourly_wage;

};

HourlyEmployee::HourlyEmployee(string name, double wage)

{

set_name(name);

hourly_wage = wage;

}

double HourlyEmployee::weekly_pay(int hours_worked) const

{

double pay = hours_worked * hourly_wage;

if (hours_worked > 40)

{

pay = pay + ((hours_worked - 40) * 0.5) * hourly_wage;

}

return pay;

}

//....................................................................

class SalariedEmployee : public Employee

{

public:

/**

@param name the name of this employee

@param salary the annual salary

*/

SalariedEmployee(string name, double salary);

virtual double weekly_pay(int hours_worked) const;

private:

double annual_salary;

};

SalariedEmployee::SalariedEmployee(string name, double salary)

{

set_name(name);

annual_salary = salary;

}

double SalariedEmployee::weekly_pay(int hours_worked) const

{

const int WEEKS_PER_YEAR = 52;

return annual_salary / WEEKS_PER_YEAR;

}

//....................................................................

class Manager : public SalariedEmployee

{

public:

/**

@param name the name of this employee

@param salary the annual salary

@param bonus the weekly bonus

*/

Manager(string name, double salary, double bonus);

virtual double weekly_pay(int hours) const;

private:

double weekly_bonus;

};

Manager::Manager(string name, double salary, double bonus)

: SalariedEmployee(name, salary)

{

weekly_bonus = bonus;

}

double Manager::weekly_pay(int hours) const

{

return SalariedEmployee::weekly_pay(hours) + weekly_bonus;

}

//....................................................................

int main()

{

vector staff;

staff.push_back(new HourlyEmployee("Morgan, Harry", 30));

staff.push_back(new SalariedEmployee("Lin, Sally", 52000));

staff.push_back(new Manager("Smith, Mary", 104000, 50));

for (int i = 0; i < staff.size(); i++)

{

cout << "Hours worked by " << staff[i]->get_name() << ": ";

int hours;

cin >> hours;

cout << "Salary: " << staff[i]->weekly_pay(hours) << endl;

}

return 0;

}