NumbersFrom0To100InText

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

namespace NumbersFrom0To100InText
{
    class Program
    {
        static void Main(string[] args)
        {
            var number = int.Parse(Console.ReadLine());
            switch(number)
            {
                case 0:
                    Console.WriteLine("zero");
                    break;
                case 1:
                    Console.WriteLine("one");
                    break;
                case 2:
                    Console.WriteLine("two");
                    break;
                case 3:
                    Console.WriteLine("three");
                    break;
                case 4:
                    Console.WriteLine("four");
                    break;
                case 5:
                    Console.WriteLine("five");
                    break;
                case 6:
                    Console.WriteLine("six");
                    break;
                case 7:
                    Console.WriteLine("seven");
                    break;
                case 8:
                    Console.WriteLine("eight");
                    break;
                case 9:
                    Console.WriteLine("nine");
                    break;
                case 10:
                    Console.WriteLine("ten");
                    break;
                case 11:
                    Console.WriteLine("eleven");
                    break;
                case 12:
                    Console.WriteLine("twelve");
                    break;
                case 13:
                    Console.WriteLine("thirteen");
                    break;
                case 14:
                    Console.WriteLine("fourteen");
                    break;
                case 15:
                    Console.WriteLine("fifteen");
                    break;
                case 16:
                    Console.WriteLine("sixteen");
                    break;
                case 17:
                    Console.WriteLine("seventeen");
                    break;
                case 18:
                    Console.WriteLine("eightteen");
                    break;
                case 19:
                    Console.WriteLine("nineteen");
                    break;
                case 20:
                    Console.WriteLine("twenty");
                    break;
                case 21:
                    Console.WriteLine("twenty one");
                    break;
                case 22:
                    Console.WriteLine("twenty two");
                    break;
                case 23:
                    Console.WriteLine("twenty three");
                    break;
                case 24:
                    Console.WriteLine("twenty four");
                    break;
                case 25:
                    Console.WriteLine("twenty five");
                    break;
                case 26:
                    Console.WriteLine("twenty six");
                    break;
                case 27:
                    Console.WriteLine("twenty seven");
                    break;
                case 28:
                    Console.WriteLine("twenty eight");
                    break;
                case 29:
                    Console.WriteLine("twenty nine");
                    break;
                case 30:
                    Console.WriteLine("thirty");
                    break;
                case 31:
                    Console.WriteLine("thirty one");
                    break;
                case 32:
                    Console.WriteLine("thirty two");
                    break;
                case 33:
                    Console.WriteLine("thirty three");
                    break;
                case 34:
                    Console.WriteLine("thirty four");
                    break;
                case 35:
                    Console.WriteLine("thirty five");
                    break;
                case 36:
                    Console.WriteLine("thirty six");
                    break;
                case 37:
                    Console.WriteLine("thirty seven");
                    break;
                case 38:
                    Console.WriteLine("thirty eight");
                    break;
                case 39:
                    Console.WriteLine("thirty nine");
                    break;
                case 40:
                    Console.WriteLine("fourty");
                    break;
                case 41:
                    Console.WriteLine("fourty one");
                    break;
                case 42:
                    Console.WriteLine("fourty two");
                    break;
                case 43:
                    Console.WriteLine("fourty three");
                    break;
                case 44:
                    Console.WriteLine("fourty four");
                    break;
                case 45:
                    Console.WriteLine("fourty five");
                    break;
                case 46:
                    Console.WriteLine("fourty six");
                    break;
                case 47:
                    Console.WriteLine("fourty seven");
                    break;
                case 48:
                    Console.WriteLine("fourty eight");
                    break;
                case 49:
                    Console.WriteLine("fourty nine");
                    break;
                case 50:
                    Console.WriteLine("fifty");
                    break;
                case 51:
                    Console.WriteLine("fifty one");
                    break;
                case 52:
                    Console.WriteLine("fifty two");
                    break;
                case 53:
                    Console.WriteLine("fifty three");
                    break;
                case 54:
                    Console.WriteLine("fifty four");
                    break;
                case 55:
                    Console.WriteLine("fifty five");
                    break;
                case 56:
                    Console.WriteLine("fifty six");
                    break;
                case 57:
                    Console.WriteLine("fifty seven");
                    break;
                case 58:
                    Console.WriteLine("fifty eight");
                    break;
                case 59:
                    Console.WriteLine("fifty nine");
                    break;
                case 60:
                    Console.WriteLine("sixty");
                    break;
                case 61:
                    Console.WriteLine("sixty one");
                    break;
                case 62:
                    Console.WriteLine("sixty two");
                    break;
                case 63:
                    Console.WriteLine("sixty three");
                    break;
                case 64:
                    Console.WriteLine("sixty four");
                    break;
                case 65:
                    Console.WriteLine("sixty five");
                    break;
                case 66:
                    Console.WriteLine("sixty six");
                    break;
                case 67:
                    Console.WriteLine("sixty seven");
                    break;
                case 68:
                    Console.WriteLine("sixty eight");
                    break;
                case 69:
                    Console.WriteLine("sixty nine");
                    break;
                case 70:
                    Console.WriteLine("seventy");
                    break;
                case 71:
                    Console.WriteLine("seventy one");
                    break;
                case 72:
                    Console.WriteLine("seventy two");
                    break;
                case 73:
                    Console.WriteLine("seventy three");
                    break;
                case 74:
                    Console.WriteLine("seventy four");
                    break;
                case 75:
                    Console.WriteLine("seventy five");
                    break;
                case 76:
                    Console.WriteLine("seventy six");
                    break;
                case 77:
                    Console.WriteLine("seventy seven");
                    break;
                case 78:
                    Console.WriteLine("seventy eight");
                    break;
                case 79:
                    Console.WriteLine("seventy nine");
                    break;
                case 80:
                    Console.WriteLine("eighty");
                    break;
                case 81:
                    Console.WriteLine("eighty one");
                    break;
                case 82:
                    Console.WriteLine("eighty two");
                    break;
                case 83:
                    Console.WriteLine("eighty three");
                    break;
                case 84:
                    Console.WriteLine("eighty four");
                    break;
                case 85:
                    Console.WriteLine("eighty five");
                    break;
                case 86:
                    Console.WriteLine("eighty six");
                    break;
                case 87:
                    Console.WriteLine("eighty seven");
                    break;
                case 88:
                    Console.WriteLine("eighty eight");
                    break;
                case 89:
                    Console.WriteLine("eighty nine");
                    break;
                case 90:
                    Console.WriteLine("ninety");
                    break;
                case 91:
                    Console.WriteLine("ninety one");
                    break;
                case 92:
                    Console.WriteLine("ninety two");
                    break;
                case 93:
                    Console.WriteLine("ninety three");
                    break;
                case 94:
                    Console.WriteLine("ninety four");
                    break;
                case 95:
                    Console.WriteLine("ninety five");
                    break;
                case 96:
                    Console.WriteLine("ninety six");
                    break;
                case 97:
                    Console.WriteLine("ninety seven");
                    break;
                case 98:
                    Console.WriteLine("ninety eight");
                    break;
                case 99:
                    Console.WriteLine("ninety nine");
                    break;
                case 100:
                    Console.WriteLine("one hundred");//hundred
                    break;
                default:
                    {
                        Console.WriteLine("invalid number");
                        break;
                    }

            }

        }
    }
}