disk file operations are classified in a certain disk space filesys.dat paper to simulate real magnetic disk, it is now in the simulated disk established creatfile document (), delete the file del (), md build directory (), delete directory rd (), document and preserve the revision edit (), Thus directory cd (), ..(), cd cd \ (), copy the copy () how to write these functions ah? Please help out! Not long after the mail jsj5219@163.com part of the code :

Packet : 23825763dfop.rar filelist
dfop.c

• We are an exchange download platform that only provides communication channels. The downloaded content comes from the internet. Except for download issues, please Google on your own.
• The downloaded content is provided for members to upload. If it unintentionally infringes on your copyright, please contact us.
• Please use Winrar for decompression tools
• If download fail, Try it againg or Feedback to us.
• If downloaded content did not match the introduction, Feedback to us，Confirm and will be refund.
• Before downloading, you can inquire through the uploaded person information

Nothing．