# elevator.h

`` //elevator.h#include "passenger.h"class Elevator : public Passenger{  public:     int floorNo,         x, y;                         // ==> (x,y) position of elevator       /* constructor of the elevator for displaying on the screen           */     /* the arguments are the position of elevator                         */     Elevator (int, int);          /* member function used to move elevator by displaying and clearing   */     /* the elevator every step it moves                                   */     void move(int);          /* member function to move elevator down                              */     void movedown(int);          /* member function to move elevator up                                */     void moveup(int);          /* member function that will decide whether the elevator should move  */     /* down or up by accepting the destination position of elevator       */     void movewhere(int);};Elevator :: Elevator ( int xpos, int ypos ){     x = xpos;     y = ypos;     int i;     textattr(15 | 4*16);      for (i=1; i<y; i++)      {      gotoxy(x+2,i);  cprintf("³");      }     gotoxy(x,y);     cprintf("ÚÄÁÄ¿");     gotoxy(x,y+1);   cprintf("³   ³");     gotoxy(x,y+2);   cprintf("ÀÄÄÄÙ");}void Elevator :: move( int y ){     textattr(15 | 4*16);      int i;     for(i=1; i<y; i++)      { gotoxy(x+2,y-1);   cprintf("³");      }      gotoxy(x,y);     cprintf("ÚÄÁÄ¿");      gotoxy(x,y+1);   cprintf("³   ³");      gotoxy(x,y+2);   cprintf("ÀÄÄÄÙ");      Sleep(500);      gotoxy(x,y);     cprintf("     ");      gotoxy(x,y+1);   cprintf("     ");      gotoxy(x,y+2);   cprintf("     ");}void Elevator :: movedown (int dest)   {     int i;     for( i=y ; i<=dest; ++i)  {  move(i);   }     y = i-1;     Elevator(x,y);   }void Elevator :: moveup (int dest)   {     int i;     for( i=y ; i>=dest; i--)  {  move(i);   }     y = i+1;     Elevator(x,y);   }void Elevator :: movewhere ( int ypos )   {     int decidemove;     decidemove = ypos - y;     if (decidemove > 0)   movedown (ypos);                    else   moveup (ypos);   }``