版本更新了一下，到5.84了，需要用VS.net平臺進行編譯運行，介紹與原來的一樣！
磁盤文件的安全刪除，我們通常所執行的刪除操作并不是真正的刪除只是清除了文件的fat表內容，文件數據還在磁盤上，可以恢復，所以不安全。-disk deletion of the security document, we usually enforced by the delete operation does not really delete the file will simply remove the fat table of contents, document data on the disk is, can be restored, therefore unsafe.
MTOOLS
version 2.0
Mtools is a public domain collection of programs to allow Unix systems
to read, write, and manipulate files on an MSDOS filesystem (typically a
diskette).
The following MSDOS commands are emulated:
Mtool MSDOS
name equivalent Description
----- ---- -----------
mattrib ATTRIB change MSDOS file attribute flags
mcd CD change MSDOS directory
mcopy COPY copy MSDOS files to/from Unix
mdel DEL/ERASE delete an MSDOS file
mdir DIR display an MSDOS directory
mformat FORMAT add MSDOS filesystem to a low-level format
mlabel LABEL make an MSDOS volume label.
mmd MD/MKDIR make an MSDOS subdirectory
mrd RD/RMDIR remove an MSDOS subdirectory
mread COPY low level read (copy) an MSDOS file to Unix
mren REN/RENAME rename an existing MSDOS file
mtype TYPE display contents of an MSDOS file
mwrite COPY low level write (copy) a Unix file to MSDOS
Name: NoTask.Pas
Version: 1.0
Platform: Delphi2.0 & Win95 or WinNT
Description: Simple component will hide your
program s forms from the Windows 95 or NT
自己編寫的String類，可以用于代替<string>中的string類。支持==、!=、<、>等比較運算符，=復制運算符，有多種構造函數，動態分配內存，長度可變。容易轉換成char*類型，而且使用深拷貝，指針使用得當。有常用的Index，Insert，Delete，Replace,SubString方法。而且源碼中給出了String類的一個小應用。開發環境Visual C++ 6.0，測試程序為Console模式。
Implement a phone book system for employees of a company.
Your program will output the following menu
(1) Enter an employee and a phone pair to the system
(2) Lookup an employee s phone number
(3) Find out who is/are the person(s) of a given number
(4) How many people are currently in the system
(5) Delete an employee from the system
(6) Output all employees name‐phone pair
(7) How many phone numbers total in the current system
(8) Quit
When
