/* ECP: FILEname=fig7_18.c */
/* 1*/   enum Piece { Human, Computer, Empty  };
/* 2*/   enum Side { You, Me };
/* 3*/   enum Color { X, O };
/* 4*/   enum Score { HumanWin, Draw, ComputerWin, Unclear };

/* 5*/   typedef enum Piece Piece;
/* 6*/   typedef enum Side Side;
/* 7*/   typedef enum Score Score;
/* 8*/   typedef enum Color Color;

/* 9*/   #define Bsize 3	       /* 3 By 3 Tic Tac Toe */
/*10*/   typedef Piece BoardType[ Bsize ][ Bsize ];


/*11*/   /* Prototypes For Two Unwritten Routines */
/*12*/   void GetMove( BoardType B, Side S );
/*13*/   int IsWon( BoardType B, Side S );


/*14*/   /* Place Piece P ( Possibly Empty ) */
/*15*/   void
/*16*/   Place( BoardType Board, int Row, int Column, Piece P )
/*17*/   {
/*18*/       Board[ Row ][ Column ] = P;
/*19*/   }

/*20*/   int
/*21*/   IsFull( BoardType Board )
/*22*/   {
/*23*/       int Row, Column;

/*24*/       for( Row = 0; Row < Bsize; Row++ )
/*25*/           for( Column = 0; Column < Bsize; Column++ )
/*26*/               if( Board[ Row ][ Column ] == Empty )
/*27*/                   return 0;

/*28*/       return 1;
/*29*/   }