elevatorbutton.cpp

这是C＋＋编程经典的书上实例的源代码。 （英文名是《C＋＋ how to program》第3版）

// elevatorButton.cpp: 
// Member function definitions for class ElevatorButton.
#include <iostream>

using std::cout;
using std::endl;

#include "elevatorButton.h"
#include "elevator.h"

// constructor
ElevatorButton::ElevatorButton( Elevator &elevatorHandle )
   : pressed( false ), elevatorRef( elevatorHandle )
{ cout << "elevator button created" << endl; }

ElevatorButton::~ElevatorButton() // destructor
{ cout << "elevator button destroyed" << endl; }

void ElevatorButton::pressButton() // press the button
{
   pressed = true;
   cout << "elevator button tells elevator to prepare to leave" 
        << endl;
   elevatorRef.prepareToLeave( true );
}

void ElevatorButton::resetButton() // reset the button
{ pressed = false; }

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