Number to Words (0...100)

using System;
using System.Collections.Generic;

namespace _17._1.Num0To100Words
{
    class NumToWord
    {
        static void Main(string[] args)
        {
            var num = int.Parse(Console.ReadLine());
            Dictionary<int, string> dict = new Dictionary<int, string>()
            {
                {0, "zero"},
                {1, "one"},
                {2, "two"},
                {3, "three"},
                {4, "four"},
                {5, "five"},
                {6, "six"},
                {7, "seven"},
                {8, "eight"},
                {9, "nine"},
                {10, "ten"},
                {11, "eleven"},
                {12, "twelve"},
                {13, "thirteen"},
                {14, "fourteen"},
                {15, "fifteen"},
                {16, "sixteen"},
                {17, "seventeen"},
                {18, "eighteen"},
                {19, "nineteen"},
                {20, "twenty"},
                {21, "twenty one"},
                {22, "twenty two"},
                {23, "twenty three"},
                {24, "twenty four"},
                {25, "twenty five"},
                {26, "twenty six"},
                {27, "twenty seven"},
                {28, "twenty eight"},
                {29, "twenty nine"},
                {30, "thirty"},
                {31, "thirty one"},
                {32, "thirty two"},
                {33, "thirty three"},
                {34, "thirty four"},
                {35, "thirty five"},
                {36, "thirty six"},
                {37, "thirty seven"},
                {38, "thirty eight"},
                {39, "thirty nine"},
                {40, "fourty"},
                {41, "fourty one"},
                {42, "fourty two"},
                {43, "fourty three"},
                {44, "fourty four"},
                {45, "fourty five"},
                {46, "fourty six"},
                {47, "fourty seven"},
                {48, "fourty eight"},
                {49, "fourty nine"},
                {50, "fifty"},
                {51, "fifty one"},
                {52, "fifty two"},
                {53, "fifty three"},
                {54, "fifty four"},
                {55, "fifty five"},
                {56, "fifty six"},
                {57, "fifty seven"},
                {58, "fifty eight"},
                {59, "fifty nine"},
                {60, "sixty"},
                {61, "sixty one"},
                {62, "sixty two"},
                {63, "sixty three"},
                {64, "sixty four"},
                {65, "sixty five"},
                {66, "sixty six"},
                {67, "sixty seven"},
                {68, "sixty eight"},
                {69, "sixty nine"},
                {70, "seventy"},
                {71, "seventy one"},
                {72, "seventy two"},
                {73, "seventy three"},
                {74, "seventy four"},
                {75, "seventy five"},
                {76, "seventy six"},
                {77, "seventy seven"},
                {78, "seventy eight"},
                {79, "seventy nine"},
                {80, "eighty"},
                {81, "eighty one"},
                {82, "eighty two"},
                {83, "eighty three"},
                {84, "eighty four"},
                {85, "eighty five"},
                {86, "eighty six"},
                {87, "eighty seven"},
                {88, "eighty eight"},
                {89, "eighty nine"},
                {90, "ninety"},
                {91, "ninety one"},
                {92, "ninety two"},
                {93, "ninety three"},
                {94, "ninety four"},
                {95, "ninety five"},
                {96, "ninety six"},
                {97, "ninety seven"},
                {98, "ninety eight"},
                {99, "ninety nine"},
                {100, "one hundred"}
            };

            if (num < 0)
            {
                Console.WriteLine("Invalid number");
            }
            else if (num > 100)
            {
                Console.WriteLine("Invalid number");
            }
            else
            {
                var result = dict[num];
                Console.WriteLine(result);
            }
        }
    }
}