using System;

public class Program

{

    public static void Main()

    {

     string str1;

     string findstring;

     int strt = 0;

     int cnt = -1;

     int idx = -1;

​

       Console.Write("\n\nFind the number of times a specific string appears in a string :\n");

       Console.Write("--------------------------------------------------------------------\n"); 

​

    Console.Write("Input the original string : ");

       str1 = Console.ReadLine();

    Console.Write("Input the string to be searched for : ");

       findstring = Console.ReadLine();       

     while (strt != -1)

     {

         strt = str1.IndexOf(findstring, idx + 1);

         cnt += 1;

         idx = strt;

     }

     Console.Write("The string '{0}' occurs " + cnt + " times.\n", findstring);    

    }

​

}