using System;

namespace PS2_Q2
{
	//
	// Problem Set 2, Question 2
	// Written by Paul Hudak
	// Sept 25, 2006
	//
	class Class1
	{
		//
		// Program Design Exercise 16 in Chapter 3
		//
		[STAThread]
		static void Main(string[] args)
		{
			Console.Write("Please type your first number: ");
			int num = int.Parse(Console.ReadLine());

			// if first number is less than 0, we exit, but do not display a minimum
			if (num<0)
				Console.WriteLine("\nYou must type at least one number.  Goodbye!\n");
			else // we now have at least one number
				MainLoop(num); 
		}

		public static void MainLoop(int num)
		{
			// the min is initially num
			int min = num;

			// get numbers from user, and keep track of minium;
			// stop when user types negative number
			while (num>=0)
			{
				min = Math.Min(num, min);
				Console.Write("Please enter a number: ");
				num = int.Parse(Console.ReadLine());
			};

			// display result
			Console.WriteLine("\nThank you.  The miniumum number is {0}.\n", min);
		}

	}
}