The following is the grading policy for assignment 7:

1.20% The program is error-free for the compilation in VC environment or 
      other environment like linux or solaris.

2.50% The correctness of the program (to check the # game's rules is correct?)

1) 10% Illegal input test: If the player chooses a position that have been occupied (5%), 
   or if the position is illegal (5%).
2) 30% Three Win tests: If the player has occupied the three position composited 
   a row (10%), a column (10%), or a diagonal (10%), he wins
3) 10% Termination test: If all the positions have occupied, the game is over and 
   it's a draw game
 
Other attention:
   Because the teacher had claim that the students can not use the apporch which 
   the class had never taught, they can only use basic type variables. Hence,
   no arrays and structures are allowed, and no global variables are allowed.
   If they violate the rule, I suggest their grade of this assignment be substracted
   by 10%

3.20% comments:
      5% Basic information
      5% problem description and I/O description.
      5% function description
      5% test description

4.10% style:
      2% file_name (If xxxxxxxxx_7.c, xxxxxxxxx is student's id number)
      2% is I/O interface friendly?
      3% variable-name
      3% indentation