Number 0...100 to Text

Number 0...100 to Text.cs

using System;
					
public class Program
{
	static public void Main(string[] args)
	{
		int number = int.Parse(Console.ReadLine());
		string[] shortName = new string[] { "zero","one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve"};
		string[] compositeName = new string[] { "twen", "thir", "four", "fif", "six", "seven", "eigh", "nine" };
		string name = "";
		
		if ((number < 0) || (number > 100))
			name = "invalid number";
		else if (number < 13)
			name = shortName[number];
		else if (number < 20)
			name = compositeName[number % 10 - 2] + "teen";
		else if (number < 100)
		{
			if (number / 10 == 4) 	name = "forty";
			else 			name = compositeName[number / 10 - 2] + "ty";
			if (number % 10 != 0)
				name += " " + shortName[number % 10];
		}
		else // number = 100
			name = "one hundred";
		Console.WriteLine(name);
	}
}