源代码行数计数器：输入文件夹物理路径和目标文件后缀名，即可查询对应文件类型中的代码行数、注释行数及空白行数。用于统计工作量-Counter of the number of lines of source code: Enter the folder physical path and target file extension, you can check the number of lines of code in the corresponding file type, the numbe