private int totalOffices;                   // 辦公室總數

        // Constructor
        public ManageHRControl()
        {
            _pricingVisitor   = new PricingVisitor();
            _inventoryVisitor = new InventoryVisitor();
        }
  private int totalOffices;               // 辦公室總數
 
  // Constructor
  public ManageHRControl()
  {
      _pricingVisitor = new PricingVisitor();
      _inventoryVisitor = new InventoryVisitor();
  }