public static void Main(string[] args)
Console.Write("Enter a number: ");
numberString = Console.ReadLine();
if (Int32.TryParse(numberString, out numberInput))
else if (numberInput < 100)
tens = (numberInput / 10) * 10;
else if (numberInput < 1000)
hundreds = numberInput / 100;
tens = (numberInput % 100);
firstName = name + " hundred ";
tens = ((numberInput % 100) / 10) * 10;
ones = (numberInput % 100) % 10;
name = firstName + secondName + " " + name;
name = firstName + secondName;
else if (numberInput == 1000)
Console.WriteLine("One Thousand");
Console.WriteLine("Out of range");
Console.WriteLine("Invalid Input.");