using System;

public class Program

{

    int i=0;

    string s1="";

    int count=0;

    public void OccuranceChar(string s, char c)

    {

    for(i=0 ; i <= s.Length-1 ; i++)

    {

        if(c == s[i])

        {

          count ++;

        }

    }

        Console.WriteLine(count);

    }

    public static void Main()

    {

        Program p= new Program();

        Console.WriteLine("Enter string");

        string userstring= Console.ReadLine();

        Console.WriteLine("Enter character to find its occurance");

        char userchar = Convert.ToChar(Console.ReadLine());

        p.OccuranceChar(userstring,userchar);

        //Console.WriteLine(res);

    }

}