employee.h

C++参考书

#ifndef EMPLOYEE_H
#define EMPLOYEE_H

#include "person.h"
using namespace std ;

class Employee : public Person
{
	public:
		Employee( const string &nm = "" ) : Person( nm ) { }
		virtual ~Employee( void ) { }

		Date getDateHired( void ) const
		{ return datehired ; }

		void setDateHired( Date date )
		{ datehired = date ; }

		virtual void formattedDisplay( ostream & ) = NULL ;

	protected:
		Date datehired ;
} ;

void Employee::formattedDisplay( ostream& os )
{
	Person::formattedDisplay( os ) ;
	os << "Date hired:    " << datehired << endl ;
}

ostream& operator << ( ostream &os, Employee &empl )
{
	os << ( Person& )empl ;
	os << empl.getDateHired() << endl ;

	return os ;
}

#endif