说明：  设计一个基于命令行界面的计算个人所得税（工资、薪金所得）应用程序，根据用户输入的当月工资薪 金总额计算应缴纳的个人所得税额。 为适应未来个人所得税法的可能变化（历史上曾有不同城市执行不同标准的情况，也曾发生过立法修改 个人所得税起征基数；当前对个人所得税进行改革的呼声也日益高涨），该程序应支持对个人所得税起 征点进行调整的功能，并且个人所得税各级税率也允许修改。请使用简单的命令行菜单方式让用户选择 所需的功能。
(Design an application based on the command line interface for calculating personal income tax (salary, salary), based on the monthly salary paid by the user The amount of personal income tax payable in respect of the total amount of gold. Legislative changes have also taken place in order to accommodate the possible changes in the individual income tax laws in the past The personal income tax base number; the current reform of personal income tax is also growing louder and louder, and the procedure should support the individual income tax The adjustment function of the levy point, and the individual income tax rates at all levels also allow amendments. Please use the simple command line menu mode to allow the user to select Desired function)