using System;

​

namespace Y2VC15

{

    public class BankAccount

    {

        #region Constructors

        public BankAccount(double balance)

        {

            if (balance <= 0) throw new Exception("Looks like you're broke buddy.");

            Balance = balance;

        }

        #endregion

​

        #region Methods

        public void TransferTo(double amount, BankAccount other)

        {

            Balance -= amount;

            other.Balance += amount;

            if (Balance < amount) throw new Exception("You don't have enough money to do that.");

        }

        public void TransferFrom(double amount, BankAccount other)

        {

            Balance += amount;

            other.Balance -= amount;

            if (other.Balance < amount) throw new Exception("You don't have enough money to do that.");

        }

        #endregion

​

        #region Properties

        public double Balance { get; set; }

        #endregion

    }

    class Program

    {

        static void Main(string[] args)

        {

            var averyAccount = new BankAccount(10000);

            var haddonAccount = new BankAccount(20);

            averyAccount.TransferTo(1, haddonAccount);

            averyAccount.TransferFrom(200, haddonAccount);

        }

    }

}

​