commissionemployee.cpp

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// Fig. 13.20: CommissionEmployee.cpp
// CommissionEmployee class member-function definitions.
#include <iostream>
using std::cout;

#include "CommissionEmployee.h" // CommissionEmployee class definition

// constructor 
CommissionEmployee::CommissionEmployee( const string &first, 
   const string &last, const string &ssn, double sales, double rate )
   : Employee( first, last, ssn )  
{
   setGrossSales( sales );
   setCommissionRate( rate );
} // end CommissionEmployee constructor

// set commission rate
void CommissionEmployee::setCommissionRate( double rate )
{ 
    commissionRate = ( ( rate > 0.0 && rate < 1.0 ) ? rate : 0.0 );
} // end function setCommissionRate

// return commission rate
double CommissionEmployee::getCommissionRate() const
{
    return commissionRate;
} // end function getCommissionRate

// set gross sales amount
void CommissionEmployee::setGrossSales( double sales ) 
{ 
   grossSales = ( ( sales < 0.0 ) ? 0.0 : sales ); 
} // end function setGrossSales

// return gross sales amount
double CommissionEmployee::getGrossSales() const
{
    return grossSales;
} // end function getGrossSales

// calculate earnings;
// override pure virtual function earnings in Employee
double CommissionEmployee::earnings() const
{ 
   return getCommissionRate() * getGrossSales(); 
} // end function earnings

// print CommissionEmployee's information 
void CommissionEmployee::print() const
{
   cout << "commission employee: ";
   Employee::print(); // code reuse
   cout << "\ngross sales: " << getGrossSales() 
      << "; commission rate: " << getCommissionRate();
} // end function print

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