说明：  就是开发一个简易的银行卡管理系统,对持卡人信息和基本操作信息进行管理。 简易银行卡管理系统的主要功能： ●新开设一个帐户 ●能够进行存款操作 ●能够进行取款操作 ●挂失帐户，挂失后帐户就被冻结　 ●注销帐户，注销后帐户就消失 ●计算存款所得的利息
(Is to develop a simple credit card management system, on the cardholder information and basic operation of information management. Easy bank card management system for the main functions: ● open a new account to carry out deposit operations ● ● ● be able to report the loss to teller operations account, report the loss after the accounts were frozen on ● write-off accounts, write-offs account disappeared ● calculation of interest earned on deposits)