using System;

public class howMany

{

    public static void Main()

    {

            string br1 = "";

            string br2 = "";

            string str = "";

            string find;

            int start = 0;

            int at;

            int end;

            int count;

            int numOf;

            int i = 0;

            bool again = true;

​

            Console.WriteLine("Enter a string.");

            str = Console.ReadLine();

            Console.Write("Search string for: ");

            find = Console.ReadLine();

​

            end = str.Length;

            while(br1.Length<end)

            {

                br1 = br1 + i + "----+----";

                i++;

                if (i == 10){

                    i=0;

                }

            }

            while(br2.Length<end)

            {

                br2 = br2 + "0123456789";

            }

            br1 = br1.Substring(start, end);

            br2 = br2.Substring(start, end);

​

            Console.WriteLine("All occurrences of '{2}' from position {0} to {1}.", start, end-1, find);

            Console.WriteLine("{1}{0}{2}{0}{3}{0}", Environment.NewLine, br1, br2, str);

            while(again){

​

                Console.Write("The string '{0}' occurs at position(s): ", find);

​

                count = 0;

                at = 0;

                numOf = 0;

                while((start <= end) && (at > -1))

                {

                    count = end - start;

                    at = str.IndexOf(find, start, count);

                    if (at == -1) break;

                    Console.Write("{0} ", at);

                    start = at+1;

                    numOf++;

                }

                Console.WriteLine("{0}{1} instances of string '{2}' found.", Environment.NewLine, numOf, find);

                Console.WriteLine("Press Enter to close the program, or search for another string.");

                find = Console.ReadLine();

                if(find == ""){

                    again = false;

                }

                start = 0;

            }

    }

}