using System;

namespace feb21
{
	class ParkingLot
	{
		private int total_spaces;
		private int occupied;

		public ParkingLot(int total)
		{
			total_spaces = total;
			occupied = 0;
		}

		public void Enter()
		{
			bool full = IsFull();
			if(!full)
			{
				occupied ++;
				Console.WriteLine("\n**Welcome to the parking lot!");
			}
			else
			{
				Console.WriteLine("\n**Sorry. The parking lot is full.");
			}
		}

		public void Leave()
		{
			if(occupied > 0)
			{
				occupied --;
				Console.WriteLine("\n**Good bye!");
			}
		}

		public bool IsFull()
		{
			if(occupied == total_spaces)
				return true;
			else
				return false;
		}
	}
	
	class Class1
	{

		[STAThread]
		static void Main(string[] args)
		{
			ParkingLot park1 = new ParkingLot(5); 

			int choice;
			
			do
			{
				Console.WriteLine("\n1. Enter.\n2. Leave. \n3. Quit");
				Console.Write("\nInput your option: ");
				choice = int.Parse(Console.ReadLine());

				switch(choice)
				{
					case 1:
							  park1.Enter();
							  break;
					case 2: 
							  park1.Leave();
							  break;
					case 3: 							  
							  break;
				}

			}while ( choice != 3);
		}
	}
}