using System;

class AccountExpection:ApplicationException

{   

    public AccountExpection():base()

    {}

    public AccountExpection(String msg):base(msg)

    {}

}

​

class Account

{

    public static void Balance(int bal)

    {

        if(bal<5000)

        {

            throw new AccountExpection();

        }

    }

}

​

public class Program

{   

    public static void Main()

    {

        try

        {

            Account.Balance(6000);

        }

        catch(AccountExpection)

        {

            Console.WriteLine("No Sufficent Cash");

        }

    }

}