Number 0...100 to Text

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Number_0._._._100_to_Text
{
    class Program
    {
        static void Main(string[] args)
        {
            var number = int.Parse(Console.ReadLine());
                if (number == 0) { Console.WriteLine("zero"); }
                else if (number == 1) { Console.WriteLine("one"); }
                else if (number == 2) { Console.WriteLine("two"); }
                else if (number == 3) { Console.WriteLine("three"); }
                else if (number == 4) { Console.WriteLine("four"); }
                else if (number == 5) { Console.WriteLine("five"); }
                else if (number == 6) { Console.WriteLine("six"); }
                else if (number == 7) { Console.WriteLine("seven"); }
                else if (number == 8) { Console.WriteLine("eight"); }
                else if (number == 9) { Console.WriteLine("nine"); }
                else if (number == 10) { Console.WriteLine("ten"); }
                else if (number == 11) { Console.WriteLine("eleven"); }
                else if (number == 12) { Console.WriteLine("twelve"); }
                else if (number == 13) { Console.WriteLine("thirteen"); }
                else if (number == 14) { Console.WriteLine("fourteen"); }
                else if (number == 15) { Console.WriteLine("fifteen"); }
                else if (number == 16) { Console.WriteLine("sixteen"); }
                else if (number == 17) { Console.WriteLine("seventeen"); }
                else if (number == 18) { Console.WriteLine("eighteen"); }
                else if (number == 19) { Console.WriteLine("nineteen"); }
                else if (number == 20) { Console.WriteLine("twenty"); }
                else if (number == 21) { Console.WriteLine("twenty one"); }
                else if (number == 22) { Console.WriteLine("twenty two"); }
                else if (number == 23) { Console.WriteLine("twenty three"); }
                else if (number == 24) { Console.WriteLine("twenty four"); }
                else if (number == 25) { Console.WriteLine("twenty five"); }
                else if (number == 26) { Console.WriteLine("twenty six"); }
                else if (number == 27) { Console.WriteLine("twenty seven"); }
                else if (number == 28) { Console.WriteLine("twenty eight"); }
                else if (number == 29) { Console.WriteLine("twenty nine"); }
                else if (number == 30) { Console.WriteLine("thirty"); }
                else if (number == 31) { Console.WriteLine("thirty one"); }
                else if (number == 32) { Console.WriteLine("thirty two"); }
                else if (number == 33) { Console.WriteLine("thirty three"); }
                else if (number == 34) { Console.WriteLine("thirty four"); }
                else if (number == 35) { Console.WriteLine("thirty five"); }
                else if (number == 36) { Console.WriteLine("thirty six"); }
                else if (number == 37) { Console.WriteLine("thirty seven"); }
                else if (number == 38) { Console.WriteLine("thirty eight"); }
                else if (number == 39) { Console.WriteLine("thirty nine"); }
                else if (number == 40) { Console.WriteLine("forty"); }
                else if (number == 41) { Console.WriteLine("forty one"); }
                else if (number == 42) { Console.WriteLine("forty two"); }
                else if (number == 43) { Console.WriteLine("forty three"); }
                else if (number == 44) { Console.WriteLine("forty four"); }
                else if (number == 45) { Console.WriteLine("forty five"); }
                else if (number == 46) { Console.WriteLine("forty six"); }
                else if (number == 47) { Console.WriteLine("forty seven"); }
                else if (number == 48) { Console.WriteLine("forty eight"); }
                else if (number == 49) { Console.WriteLine("forty nine"); }
                else if (number == 50) { Console.WriteLine("fifty"); }
                else if (number == 51) { Console.WriteLine("fifty one"); }
                else if (number == 52) { Console.WriteLine("fifty two"); }
                else if (number == 53) { Console.WriteLine("fifty three"); }
                else if (number == 54) { Console.WriteLine("fifty four"); }
                else if (number == 55) { Console.WriteLine("fifty five"); }
                else if (number == 56) { Console.WriteLine("fifty six"); }
                else if (number == 57) { Console.WriteLine("fifty seven"); }
                else if (number == 58) { Console.WriteLine("fifty eight"); }
                else if (number == 59) { Console.WriteLine("fifty nine"); }
                else if (number == 60) { Console.WriteLine("sixty"); }
                else if (number == 61) { Console.WriteLine("sixty one"); }
                else if (number == 62) { Console.WriteLine("sixty two"); }
                else if (number == 63) { Console.WriteLine("sixty three"); }
                else if (number == 64) { Console.WriteLine("sixty four"); }
                else if (number == 65) { Console.WriteLine("sixty five"); }
                else if (number == 66) { Console.WriteLine("sixty six"); }
                else if (number == 67) { Console.WriteLine("sixty seven"); }
                else if (number == 68) { Console.WriteLine("sixty eight"); }
                else if (number == 69) { Console.WriteLine("sixty nine"); }
                else if (number == 70) { Console.WriteLine("seventy"); }
                else if (number == 71) { Console.WriteLine("seventy one"); }
                else if (number == 72) { Console.WriteLine("seventy two"); }
                else if (number == 73) { Console.WriteLine("seventy three"); }
                else if (number == 74) { Console.WriteLine("seventy four"); }
                else if (number == 75) { Console.WriteLine("seventy five"); }
                else if (number == 76) { Console.WriteLine("seventy six"); }
                else if (number == 77) { Console.WriteLine("seventy seven"); }
                else if (number == 78) { Console.WriteLine("seventy eight"); }
                else if (number == 79) { Console.WriteLine("seventy nine"); }
                else if (number == 80) { Console.WriteLine("eighty"); }
                else if (number == 81) { Console.WriteLine("eighty one"); }
                else if (number == 82) { Console.WriteLine("eighty two"); }
                else if (number == 83) { Console.WriteLine("eighty three"); }
                else if (number == 84) { Console.WriteLine("eighty four"); }
                else if (number == 85) { Console.WriteLine("eighty five"); }
                else if (number == 86) { Console.WriteLine("eighty six"); }
                else if (number == 87) { Console.WriteLine("eighty seven"); }
                else if (number == 88) { Console.WriteLine("eighty eight"); }
                else if (number == 89) { Console.WriteLine("eighty nine"); }
                else if (number == 90) { Console.WriteLine("ninety"); }
                else if (number == 91) { Console.WriteLine("ninety one"); }
                else if (number == 92) { Console.WriteLine("ninety two"); }
                else if (number == 93) { Console.WriteLine("ninety three"); }
                else if (number == 94) { Console.WriteLine("ninety four"); }
                else if (number == 95) { Console.WriteLine("ninety five"); }
                else if (number == 96) { Console.WriteLine("ninety six"); }
                else if (number == 97) { Console.WriteLine("ninety seven"); }
                else if (number == 98) { Console.WriteLine("ninety eight"); }
                else if (number == 99) { Console.WriteLine("ninety nine"); }
                else if (number == 100) { Console.WriteLine("one hundred"); }
                else
                    Console.WriteLine("invalid number");
        }
    }
}