hourly.cpp

斯坦福Energy211/CME211课《c++编程——地球科学科学家和工程师》的课件

// Implementation file for the Hourly class

#include "hourly.h"
#include "emp_exceptions.h"

using namespace std;

Hourly::Hourly()
{
	m_PayRate = 0.0;
	m_HoursPerWeek = 0;
}

Hourly::Hourly( const string& name, const string& ssn, 
	double payrate, int hours ) : Employee( name, ssn ) {
	// First the base class constructor is called, to store
	// the name and ssn.  Here, we store the hourly pay
	// rate and the hours worked per week
	cout << "Constructing an hourly employee!" << endl;
	m_PayRate = payrate;
	m_HoursPerWeek = hours;
}

Hourly::Hourly( const Hourly& h ): Employee( h ) {
	// Copy data members that haven't already been copied
	// using the base class copy constructor
	m_PayRate = h.m_PayRate;
	m_HoursPerWeek = h.m_HoursPerWeek;
}

Hourly::~Hourly() {
	// Nothing to destroy here, because the data members
	// will be de-allocated automatically
	cout << "Destroying an hourly employee!" << endl;
}

double Hourly::GetYearlyPay() const {
	// Compute yearly pay from hourly rate, hours per week
	// and weeks per year
	double pay = m_PayRate * m_HoursPerWeek * 52;
	if ( pay > 50000.0 )
		throw OverpaidException( m_Name, pay );
	return pay;
}

void Hourly::SendTo( ostream& out ) const {
	// First call base class function
	Employee::SendTo( out );
	// Now output class-specific members
	out << "Hourly Pay: $" << m_PayRate << " per hour" << endl;
	out << "Hours Per Week: " << m_HoursPerWeek << endl;
}

void Hourly::GetFrom( istream& in, bool prompt ) {
	// First call base class function
	Employee::GetFrom( in, prompt );
	// Now read class-specific members
	if ( prompt == true )
		cout << "Hourly Pay: ";
	in >> m_PayRate;
	if ( prompt == true )
		cout << "Hours Per Week: ";
	in >> m_HoursPerWeek;
}

Hourly& Hourly::operator=( const Hourly& h ) {
	// We don't need this operator to do anything since
	// we never want it to be used
	return *this;
}