/* ECP: FILEname=fig9_23.c */
/* 1*/   #include <stdio.h>

/* 2*/   void Help( void );
/* 3*/   void Quit( void );
/* 4*/   void Reset( void );
/* 5*/   void Undo( void );

/* 6*/   typedef struct
/* 7*/   {
/* 8*/       char *Command;
/* 9*/       void ( *Func )( void );
/*10*/   } CommStruct;

/*11*/   static const CommStruct TheCommands[ ] =
/*12*/   {
/*13*/       "exit", Quit,
/*14*/       "help", Help,
/*15*/       "quit", Quit,
/*16*/       "reset", Reset,
/*17*/       "undo", Undo,
/*18*/       NULL, NULL             /* Place Last; No Match */
/*19*/   };

/*20*/   void
/*21*/   DoCommand( const char *Comm )
/*22*/   {
/*23*/       const CommStruct *Ptr;

/*24*/       for( Ptr = TheCommands; Ptr->Command != NULL; Ptr++ )
/*25*/           if( strcmp( Comm, Ptr->Command ) == 0 )
/*26*/           {
/*27*/               ( *Ptr->Func )( );
/*28*/               return;
/*29*/           }

/*30*/       printf( "Error: unrecognized command\n" );
/*31*/   }