用delphi开发的目录树复制函数，可以用于其他算法的开发，我用它写了一个u盘自动复制的程序。-with the development of tree reproduction function, algorithm can be used for other development, I use it to write a u-automatic replication procedures.

编写一个树型目录结构的文件系统模拟文件管理工作流程 模拟文件系统，具备新建，删除，读，写，复制等基本功能。-prepared a directory tree structure of the file system simulation document management workflow simulation file system, with the new, delete, read, write, copy, and other basic functions.

掌握与文件和目录树有关的系统调用和库函数。