using System;

public class Program

{

    public static void Main()

    {

        my_vars.a=5;

        int aa =my_vars.a;

        my_vars.b=6;

        int bb = my_vars.b;

        string st = "111" + "222";

        st = st+ "333";

        Console.WriteLine(st);

        //Console.WriteLine("Hello World" , bb);

    }

    public static class my_vars

    {

        public static int a ;

        public static int b ;

    }

}

​