You can use these functions to support the creation of &quot; relative &quot; files, so that you can save and reload certain records by specifying their record number. File I/O functions can also help you manage your files by providing you with information such as file size, current path settings, or the creation date of a file or a directory.
您可以使用这些函数来创建“相对”文件，这样就可以通过指定文件的记录编号来保存并重新加载某些记录。文件 I/O 函数还可以为您提供文件或目录的文件大小、当前路径设置和创建时间等信息，帮助您更好地管理文件。