using System;

namespace Example28
{
	/// <summary>
	/// Summary description for Class1.
	/// </summary>
	class Class1
	{
		public static double Volume(int type, double radius, double height)
		{
			switch (type)
			{
				case 0: // Sphere
					return 4.0 * Math.PI * Math.Pow(radius, 3.0) / 3.0;
				case 1: // Cylinder
					return Math.PI * Math.Pow(radius, 2.0) * height;
				case 2: // Cone
					return Math.PI * Math.Pow(radius, 2.0) * height / 3.0;
				default:
					Console.WriteLine("Invalid shape type.");
					return -1.0;
			}
		}
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main(string[] args)
		{
			int choice;
			double height, radius, volume = 0.0;

			do
			{
				Console.WriteLine("Please choose one of the following:\n");
				Console.WriteLine("0 Sphere\n1 Cylinder\n2 Cone\n3 Quit\n");

				choice = int.Parse(Console.ReadLine());

				switch (choice)
				{
					case 0: // Sphere
						Console.Write("\nInput radius: ");
						radius = double.Parse(Console.ReadLine());
						volume = Volume(choice, radius, 2 * radius);
						if (volume > 0.0)
							Console.WriteLine("\nThe volume of a sphere of radius {0} is {1:f2}\n",
								radius, volume);
						break;
					case 1: // Cylinder
						break;

					case 2: // Cone
						Console.Write("\nInput radius: ");
						radius = double.Parse(Console.ReadLine());
						Console.Write("Input height: ");
						height = double.Parse(Console.ReadLine());
						volume = Volume(choice, radius, height);
						if (volume > 0.0)
							Console.WriteLine("\nThe volume of a cone of height {0} and radius {1} is {2:f2}\n",
								height, radius, volume);
						break;

					case 3: // Quit
						break;

					default:
						Console.WriteLine("\nIvalid shape type. Please try again.\n");
						break;
				}
			} while (choice != 3);
		}
	}
}