Write In English the Number Names 0-999

using System;
class WriteInEnglishNumberNames
{
  static void Main()
  {
    //* Write a program that converts a number in the range [0...999] to a text corresponding to its English pronunciation. Examples:
      //0 -> "Zero"
      //273 ->"Two hundred seventy three"
      //400 -> "Four hundred"
      //501 -> "Five hundred and one"
      //711 -> "Seven hundred and eleven"

    Console.Write("Please enter an integer number in the range [0, 999]: ");
    string userInput = Console.ReadLine();
    int numberToWrite;
    bool isCorrectInput = int.TryParse(userInput, out numberToWrite);

    string[] arrayZeroToNineteen = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
    string[] arrayTens = {"twenty", "thirty", "fourty", "fifty", "sixty", "seventy", "eighty", "ninety", "hundred" };

    if (isCorrectInput)
    {
      if (numberToWrite >= 0 && numberToWrite < 100)
      {
        if (numberToWrite >= 0 && numberToWrite <= 19) { Console.WriteLine("{0}", arrayZeroToNineteen[numberToWrite]); }
        if (numberToWrite == 20 || numberToWrite == 30 || numberToWrite == 40 || numberToWrite == 50 || numberToWrite == 60 || numberToWrite == 70 || numberToWrite == 80 || numberToWrite == 90 || numberToWrite == 100) { Console.WriteLine("{0}", arrayTens[((numberToWrite / 10) - 2)]); }
        if (numberToWrite > 20 && numberToWrite < 100) { Console.WriteLine("{0}-{1}", arrayTens[((numberToWrite / 10) - 2)], arrayZeroToNineteen[numberToWrite % 10]); }
      }
      else if (numberToWrite == 100 || numberToWrite == 200 || numberToWrite == 300 || numberToWrite == 400 || numberToWrite == 500 || numberToWrite == 600 || numberToWrite == 700 || numberToWrite == 800 || numberToWrite == 900)
      {
        Console.WriteLine("{0} hundred", arrayZeroToNineteen[(numberToWrite / 100)]);
      }
      else if (numberToWrite > 100 && numberToWrite < 1000)
      {
        switch (numberToWrite % 100)
        {
          case 1:
          case 2:
          case 3:
          case 4:
          case 5:
          case 6:
          case 7:
          case 8:
          case 9:
          case 10:
          case 11:
          case 12:
          case 13:
          case 14:
          case 15:
          case 16:
          case 17:
          case 18:
          case 19:
            Console.WriteLine("{0} hundred and {1}", arrayZeroToNineteen[((numberToWrite / 100) + 1)], arrayZeroToNineteen[(numberToWrite % 100) + 1]);
            break;

          case 20:
          case 30:
          case 40:
          case 50:
          case 60:
          case 70:
          case 80:
          case 90:
            Console.WriteLine("{0} hundred and {1}", arrayZeroToNineteen[(numberToWrite / 100)], arrayTens[(((numberToWrite % 100) / 10) - 2)]);
            break;
          default:
            Console.WriteLine("{0} hundred and {1}-{2}", arrayZeroToNineteen[(numberToWrite / 100)], arrayTens[(((numberToWrite % 100) / 10) - 2)], arrayZeroToNineteen[(numberToWrite % 100) % 10]);
            break;
        }
      }
      else
      {
        Console.WriteLine("Incorrect input! You should enter a number between 0 and 999!");
      }
    }
  }
}