建立一个简单的银行账户系统。关于账户的信息有：户名、账号、余额。对账户的管理有：开户、存款、取款、查询余额等功能。用结构化程序设计方法设计一个程序，使该程序能对银行账户的信息进行上述操作管理。-Create a simple bank account system. Information about the account are: user name, account number, balance. Management of the account are: accounts, deposits, withdrawals, balance inquiries and other functions. With structured programming method to design a program so that the program can perform the above bank account information operations management.