CountOccurrences

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

namespace ConsoleApplication7
{
    class Program
    {

        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            string pattern = Console.ReadLine();
            Console.WriteLine(Occurrences(input, pattern));
        }
       static int Occurrences(string longWord, string shortWord)
        {
            int counter = 0;
            int lengthPattern = shortWord.Length;
            for (int i = 0; i <= longWord.Length - lengthPattern; i++)
            {
                if (longWord.ToLower().IndexOf(shortWord.ToLower(), i, lengthPattern) != -1)
                {
                    counter++;
                }
            }
            return counter;
        }


    }
}