编写程序，实现活期存款账户的模拟操作。



很久以前，在银行业兴起的时候，银行为客户开设金钱保管业务，每个账户有帐号、户名、密码、金额4项信息。客户可以对自己的账户进行存取钱、改密码、查余额操作；



多年后，随着经济的发展，投资业比较发达了，这时，银行为它保管的金钱发利息。从此，诞生了现代的活期存款账户。此时，每个账户有帐号、户名、密码、金额、月利率、开户时间、操作历史列表7项信息，客户可以对自己的账户进行存取钱、改密码、查余额操作，银行每月要根据账户余额发给客户利息（这个操作叫月利息结算），银行拥有更改利率的权利。客户可以随时查看账户历史操作记录。-Write a program that simulated operation of the current account.



Long time ago, when the rise in the banking sector, the bank opened for the customer money, the custody business, account, user name, password for each account, the amount of 4 information. Customers can access the money on their accounts, change your password, check the balance of the operation



Years later, with the economic development and investment industry developed, this time, the banks kept it money issued interest. Since then, the birth of the modern current account. At this point, each account, account number, user name, password, the amount of monthly interest rate, time of account opening, operating history list 7 information, customers can own account to access the money, change your password, check the balance of operations, the bank monthly according to the account balance to the customer interest (this operation is called a month interest on the balance sheet), the bank has the right to change intere