public static string Three(int x)
        {
            string word = null;

            if (x.ToString().StartsWith("1"))
            {
                word += "one hundred";
            }
            else if (x.ToString().StartsWith("2"))
            {
                word += "two hundred";
            }
            else if (x.ToString().StartsWith("3"))
            {
                word += "three hundred";
            }
            else if (x.ToString().StartsWith("4"))
            {
                word += "four hundred";
            }
            else if (x.ToString().StartsWith("5"))
            {
                word += "five hundred";
            }
            else if (x.ToString().StartsWith("6"))
            {
                word += "six hundred";
            }
            else if (x.ToString().StartsWith("7"))
            {
                word += "seven hundred";
            }
            else if (x.ToString().StartsWith("8"))
            {
                word += "eight hundred";
            }
            else if (x.ToString().StartsWith("9"))
            {
                word += "nine hundred";
            }

            //////////////////////////////////////////////////////////////////////////////////////////////////

            if (x.ToString()[1] == 0)
            {
                if (x.ToString()[2] == 1)
                {
                    word += " and one";
                }
                else if (x.ToString()[2] == 2)
                {
                    word += " and two";
                }
                else if (x.ToString()[2] == 3)
                {
                    word += " and three";
                }
                else if (x.ToString()[2] == 4)
                {
                    word += " and four";
                }
                else if (x.ToString()[2] == 5)
                {
                    word += " and five";
                }
                else if (x.ToString()[2] == 6)
                {
                    word += " and six";
                }
                else if (x.ToString()[2] == 7)
                {
                    word += " and seven";
                }
                else if (x.ToString()[2] == 8)
                {
                    word += " and eight";
                }
                else if (x.ToString()[2] == 9)
                {
                    word += " and nine";
                }
            }

            if (x.ToString()[1] == 1)
            {
                if (x.ToString()[2] == Convert.ToChar(0))
                {
                    word += " and ten";
                }
                else if (x.ToString()[2] == Convert.ToChar(1))
                {
                    word += " and eleven";
                }
                else if (x.ToString()[2] == Convert.ToChar(2))
                {
                    word += " and twelve";
                }
                else if (x.ToString()[2] == Convert.ToChar(3))
                {
                    word += " and thirteen";
                }
                else if (x.ToString()[2] == Convert.ToChar(4))
                {
                    word += " and fourteen";
                }
                else if (x.ToString()[2] == Convert.ToChar(5))
                {
                    word += " and fifteen";
                }
                else if (x.ToString()[2] == Convert.ToChar(6))
                {
                    word += " and sixteen";
                }
                else if (x.ToString()[2] == Convert.ToChar(7))
                {
                    word += " and seventeen";
                }
                else if (x.ToString()[2] == Convert.ToChar(8))
                {
                    word += " and eighteen";
                }
                else if (x.ToString()[2] == Convert.ToChar(9))
                {
                    word += " and nineteen";
                }
            }

            //////////////////////////////////////////////////////////////////////////////////////////////////

            if (x.ToString().Substring(1) == "00")
            {
                return word;
            }
            else if (x.ToString()[1] == Convert.ToChar(2))
            {
                word += " and twenty";
            }
            else if (x.ToString()[1] == Convert.ToChar(3))
            {
                word += " and thirty";
            }
            else if (x.ToString()[1] == Convert.ToChar(4))
            {
                word += " and forty";
            }
            else if (x.ToString()[1] == Convert.ToChar(5))
            {
                word += " and fifty";
            }
            else if (x.ToString()[1] == Convert.ToChar(6))
            {
                word += " and sixty";
            }
            else if (x.ToString()[1] == Convert.ToChar(7))
            {
                word += " and seventy";
            }
            else if (x.ToString()[1] == Convert.ToChar(8))
            {
                word += " and eighty";
            }
            else if (x.ToString()[1] == Convert.ToChar(9))
            {
                word += " and ninety";
            }

            //////////////////////////////////////////////////////////////////////////////////////////////////

            if (x.ToString()[1] != 0 || x.ToString()[1] != 1)
            {
                if (x.ToString().EndsWith("0"))
                {
                    return word;
                }
                else if (x.ToString().EndsWith("1"))
                {
                    word += "-one";
                }
                else if (x.ToString().EndsWith("2"))
                {
                    word += "-two";
                }
                else if (x.ToString().EndsWith("3"))
                {
                    word += "-three";
                }
                else if (x.ToString().EndsWith("4"))
                {
                    word += "-four";
                }
                else if (x.ToString().EndsWith("5"))
                {
                    word += "-five";
                }
                else if (x.ToString().EndsWith("6"))
                {
                    word += "-six";
                }
                else if (x.ToString().EndsWith("7"))
                {
                    word += "-seven";
                }
                else if (x.ToString().EndsWith("8"))
                {
                    word += "-eight";
                }
                else if (x.ToString().EndsWith("9"))
                {
                    word += "-nine";
                }
            }

            Console.WriteLine(word);
            return word;
        }

        static void Main(string[] args)
        {
            for (int i = 100; i < 1001; i++)
            {
                if (i < 21)
                {
                    One(i);
                }
                else if (i > 20 && i < 100)
                {
                    Two(i);
                }
                else if (i > 99 && i < 1001)
                {
                    Three(i);
                }

                Console.WriteLine(i);
                Console.ReadLine();
            }
        }