import awb.*;
import java.awt.*;
import java.awt.event.*;

public class Hotel extends java.applet.Applet implements ActionListener
{
    TextField mInstruct, mHotelCensus;
    IntField gRoomNo, gNoGuests;
    Button bRegister;
    int k=0, totGuests = 0, noOccupied = 0, roomNo, noGuests;
    int room[];
    
    public void init()
    {   
	room = new int[500];
	k = 0;
	while (k < 500)
	{
	    room[k] = 0;
	    k = k + 1;
	}
        mInstruct = new TextField(60);
        mInstruct.setText
             ("Enter room number, number of guests, then press Register");
        gRoomNo = new IntField(6);
        gNoGuests = new IntField(6);
        bRegister = new Button("Register");
        mHotelCensus = new TextField(60);
        bRegister.addActionListener(this);
        add(mInstruct);
        add(gRoomNo);
        add(gNoGuests);
        add(bRegister);
        add(mHotelCensus);
    }
        
    public void actionPerformed(ActionEvent event)
    {
	Object cause = event.getSource();

        if (cause == bRegister)
        {
            roomNo = gRoomNo.getInt();
            noGuests = gNoGuests.getInt();
            if (room[roomNo] != 0)
            {
		mHotelCensus.setText("That room is occupied!");
            }
	    else
	    {
		room[roomNo] = noGuests;
		totGuests = totGuests + noGuests;
		noOccupied = noOccupied + 1;
                mHotelCensus.setText("There are " + totGuests +
			" occupying " + noOccupied + " rooms.");
	    }
        }
    }
}