对于银行客户业务分为很多种，最常见到的银行必须具备的业务。分为：首先注册用户，使用户获得账号。用户可对自己的帐户进行存款，取款，查询余额，转帐等管理．在实际业务运行中也存在一些基本的要求，如取款的总数不能超过存款的总数，转帐的金额不能超过帐户里的余额等。当然为了用户个人财产安全，银行必须为用户提供密码服务功能。最后，在实际操作中，我们发现用户有时在管理自己的帐户的时候也需要打印或记录当时的操作完成时间。同时银行或行政业务人员在必要时候，也需要打印或记录当时的操作完成时间。本程序针对以上需求在不断调试和更新的基础上，基本上完成了对以上功能的模拟。-The bank is divided into a variety of business clients, most often to see the bank must have the business. Divided into: First of all registered users, allows users to access accounts. Users can carry out on their own account deposits, withdrawals, balance inquiries, transfer of management. In the actual business operation, there are some basic requirements, such as the total number of withdrawals can not exceed the total number of deposits, the transfer should not exceed the amount of the balance of such account. Of course, for users of personal property security, banks are required to provide the password for the user services. Finally, in practice, we found that sometimes users to manage their own accounts at the time required to print or record the time when the operation is complete. At the same time, a bank or business administration at the necessary time, but also need to print or record the time when the operation is complete. This procedure continued for more than demand in th