using System;

namespace Example49
{
	/// <summary>
	/// Summary description for Class1.
	/// </summary>
	class Class1
	{
		public enum Coin { heads, tails }

		private static Random r = new Random();

		public static Coin yourGuess()
		{
			Console.Write("What's your guess? (heads or tails): ");

			return Console.ReadLine().ToLower().Trim() == "heads" ? Coin.heads : Coin.tails;
		}

		public static Coin computerToss()
		{
			return r.Next(2) == 0 ? Coin.heads : Coin.tails;
		}
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main(string[] args)
		{
			do 
			{
				if (yourGuess() == computerToss())
				{
					Console.WriteLine("You win!");
				}
				else
				{
					Console.WriteLine("Computer wins!");
				}
				Console.Write("Another game? (y or n): ");
			} while (Console.ReadLine().ToLower().Trim() == "y");
		}
	}
}