using System;

class Program

{

    static void Main(string[] args)

    {

        int count = 0;

        for (int i = 0; i < 5; i++)

            Console.WriteLine(i);

        //Console.WriteLine(i); //can't access i because it has loop level scope

        if (count == 0)

        {

            count++; //can access method variables

​

            int x = 10; //declared block level variable

        }

        //Console.WriteLine(x); //can't access block level variable

    }

}