银行定期储蓄系统是模拟银行工作人员进行银行定期储蓄基本业务操作的系统，它可以实现如下几个功能：1、工作人员根据口令进入系统，2、可以录入新的存单信息（存单编号，储户姓名，身份证编号，住址，存款金额，存期，利率，密码），利率在存期决定后自动得到，3、据存单编号可以查询存单信息，4、根据存单编号和密码可以完成储户取款操作，自动算清应支付的利息并显示在屏幕上。本系统要求界面友好，可操作性强，存单信息可以保存在文件中，在实现基本功能的基础上增加对员工信息维护的功能，比如修改口令。通过本课题，可以熟练掌握面向对象的设计方法，函数的调用、文件的读写的知识，以及查找的算法等等。-Regular savings banks system is a simulation of the bank staff in regular savings banks basic business operations system, it can achieve the following functions: one, the staff according to the password into the system, two, you can input new information on certificates of deposit (CDs number, depositor name , identity card number, address, deposit amount, maturity, interest rate, password), the interest rate on the deposit period determines automatically get, 3, according to certificates of deposit certificates of deposit number can query information, 4, according to the certificate of deposit number and password can complete the depositor withdrawals operations, be settled automatically and show the interest payable on the screen. The system requirements for user-friendly, easy to operate, deposit information can be saved in a file, in the realization of the basic functions on the basis of increased employee information maintenance functions, such as changing passwords. Through this