一个基于命令行的计算个人所得税的应用程序，根据用户输入的当月工资薪金总额计算应缴纳个人所得税，支持修改税率和起征基数。-A calculation based on the command line application, personal income tax, based on user input in terms of gross wages and salaries that month should pay individual income tax, and would impo