using System;

using System.CodeDom;

using System.CodeDom.Compiler;

using System.ComponentModel;

using System.ComponentModel.Design.Serialization;

using System.Collections.Generic;

using System.Reflection;

            class statement

    {

        public  string expression { get;  set; }

        public statement()

        {

​

        }

        public virtual String GetString()

        {

            return expression ;

        }

    }

    class MethodStatement : statement

    {

​

        private string methodString = "Method();";

        private statement childstatemet { get; set; }

        public MethodStatement()

        {

            expression = methodString;

        }

​

        public MethodStatement(statement stmt)

        {

            expression = methodString;

            childstatemet = stmt;

        }

​

        public override String GetString()

        {

            if (childstatemet == null)

            {

                return expression;

            }

            else

            {

                return expression + "{" + childstatemet.GetString() + "}";

            }

        }

​

​

    }

    class foreachstmt : statement

    {

​

        private string foreachString = "foreach()";

        private statement childstatemet { get;  set; }

        public foreachstmt()

        {

            expression = foreachString;

        }

​

        public foreachstmt(statement stmt)

        {

            expression = foreachString;

            childstatemet = stmt;

        }

​

        public override String GetString()

        {

            if (childstatemet == null)

            {

                return expression;

            }

            else

            {

                return expression + "{" + childstatemet.GetString() + "}";

            }

        }

​

​

    }

​

    class Ifstmt : statement

    {

        private string ifString= "if()";

​

        private statement childstatemet { get; set; }

​

        public Ifstmt()

        {

            expression = ifString;

        }

​

        public Ifstmt(statement stmt)

        {

            expression=ifString;

            childstatemet = stmt;

        }

        public override String  GetString()

        {

            if (childstatemet == null)

            {

                return expression;

            }

            else

            {

                return expression + "{" + childstatemet.GetString() + "}";

            }

        }

​

    }

public class Program

{

    public static void Main()

    {

         MethodStatement methodStatement = new MethodStatement();

​

            foreachstmt foreachCountry = new foreachstmt(methodStatement);

​

            // Console.WriteLine("Country  Servicee!!!");

​

            Console.WriteLine(foreachCountry.GetString());

​

​

            Ifstmt ifstmt = new Ifstmt();       

​

​

           foreachstmt foreachstmt = new foreachstmt();

​

            Ifstmt ifstmt1 = new Ifstmt(foreachstmt);

​

           foreachstmt foreachstmt1 = new foreachstmt(foreachstmt);

​

            foreachstmt foreachstmt2 = new foreachstmt(ifstmt);

​

           String sts=ifstmt.GetString();

​

            Console.WriteLine(sts);

            Console.WriteLine(foreachstmt.GetString());

​

            Console.WriteLine(ifstmt1.GetString());

​

            Console.WriteLine(foreachstmt1.GetString());

​

            Console.WriteLine(foreachstmt2.GetString());

​

    }

}