Homework #7
-  Goal: Learning the concept of destructors and how they are
used.
 - Please UPLOAD your homework (ZIP or RAR file) to TA at
  http://ms11.voip.edu.tw/cs102/ 
 
- Deadline: 2008/4/7 11:00 AM
- 
   Modify the destructor of CBox in Ex8_06.cpp, so that the program will
   show how many destructor calls are invoked.  When was each object
   created and destroyed, respectively?