Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!VAX1.CC.UAKRON.EDU!math-cs.kent.edu!usenet.ins.cwru.edu!abvax!abaa!korsberg
From: korsberg@abaa.uucp (Ed Korsberg)
Newsgroups: comp.lang.c
Subject: Re: The right-left rule
Keywords: declaration decipher
Message-ID: <5593@abaa.UUCP>
Date: 17 Jul 90 14:25:50 GMT
References: <1990Jul16.163612.5344@kfw.COM> <1990Jul16.195111.5976@kfw.COM> <1990Jul17.125413.7968@agate.berkeley.edu>
Reply-To: korsberg@abaa.UUCP (Ed Korsberg)
Distribution: na
Organization: Allen Bradley
Lines: 53

In article <1990Jul16.195111.5976@kfw.COM> will@kfw.com (Will Crowder) writes:
>[150 lines about the right-left rule]

I have a table driven FSM with a state variable (state_variable) which points to 
one of several state tables (see trivial example below).  Given the current 
state (state_variable) and an event, I want to call the appropriate action 
(func_x in tables).

void            (*state1_table[]) () =
{
    func_1                /* EVENT 1 */
    ,func_2               /* EVENT 2 */
    ,func_3               /* EVENT 3 */
    ,func_4               /* EVENT 4 */
};

void            (*state2_table[]) () =
{
    func_1                /* EVENT 1 */
    ,func_2               /* EVENT 2 */
    ,func_7               /* EVENT 3 */
    ,func_6               /* EVENT 4 */
};

void            (*state3_table[]) () =
{
    func_1                /* EVENT 1 */
    ,func_8               /* EVENT 2 */
    ,func_0               /* EVENT 3 */
    ,func_4               /* EVENT 4 */
};


fsm(event)
unsigned int event;			/* occurance of EVENT n */
{
	void	(*action)();
	
	action = state_variable[event]; /* From STATE and EVENT, get action */
	(*action)();			/* perform action */
}

****************************************************************************
Problem is how do you declare a pointer to an array of pointers of functions 
returning void?

I need something like 
	void (*state_variable)[]
but cannot seem to get the syntax correct.  
Any help on this would be appreciated.
---------------------------------------------------------------------------

Ed Korsberg	korsberg@aa.ab.com