用于批量处理某个文件夹下的txt，excel文件，通过获取目录，将目录信息保存在特定结构体数组，批量处理这些文件，可以绘图或者做批量信号处理。-For batch processing txt, excel files in a folder, by acquiring directory, the directory information is stored in an array of specific structures, batch processing of these files, you can make a drawing or batch signal processing.