基本要求：设计一个基于命令行界面的计算个人所得税应用程序，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，该程序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。利用简单的菜单方式让用户选择所需的功能。-Basic requirements: design of a command-line interface based on the calculation of personal income tax application, based on user input as measured by gross monthly wages and salaries to be paid the amount of personal income tax. In order to meet the future possible changes in personal income tax law, the program supports the personal income tax threshold adjustment function, and the personal income tax rates at all levels, also allows you to modify. Using a simple menu approach allows users to select the desired function.