S4 - Other

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


namespace ConsoleApplication37
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] Letters=new int[26];
            Console.WriteLine("Type a string");
            string St = Console.ReadLine().ToLower();
            int Asterick = St.IndexOf('*');
            for (int i = 0; i < Asterick; ++i)
            {
                int Num = ((int)St[i])-97;
                Letters[Num] =Letters[Num]+1;
            }
            for (int i = 0; i < Letters.Length; ++i)
            {
                if (Letters[i] > 0)
                {
                    Console.WriteLine("Letter {0}:{1}", (char)(i + 97), Letters[i]);
                }
            }

        }

    }
}