On Mon, Apr 21, 2008 at 01:41:27PM -0400, Bill Davidsen wrote: > Les Mikesell wrote: > >Bill Davidsen wrote: > >> > >>>Quiz for next Friday. What are these and what's the difference > >>>between them: > >>> > >>>int (*(**p)[])(int) > >>declare p as pointer to pointer to array of pointer to function (int) > >>returning int > >> > >>>and > >>>int *(*(**p)[])(int) > >>declare p as pointer to pointer to array of pointer to function (int) > >>returning pointer to int > >> > >>I would really want to see both a justification of method and > >>certificate of sanity to someone who actually used either. I can just > >>barely justify pointer to array of function returning int (state > >>machines), these look like something a compiler compiler would do. > > > >I sort of recall using a pointer to an array of structs as the basic > >data type for anything significant in C but I've mostly forgotten why. I > >think sometimes it had to do with getting usable semantics to access > >things in shared memory segments. > > > Pointer to struct is the heart of good linked lists, and a pointer to > array of struct is certainly a reasonably use. I certainly use arrays of > pointers to functions, both for state machines and and emulators, after > that it gets very hard to maintain. And you can trust that Bill has been programming in C for a loooooooooong time! I remember seeing his picture in a (forgive me for the bad words) Microsoft ad in 1988 or maybe 1989 for MS-C! :) > > -- > Bill Davidsen <davidsen@xxxxxxx> > "We have more to fear from the bungling of the incompetent than from > the machinations of the wicked." - from Slashdot -- ------------------------------------------------------------------------------- .---- Fred Smith / ( /__ ,__. __ __ / __ : / / / / /__) / / /__) .+' Home: fredex@xxxxxxxxxxxxxxxxxxxxxx / / (__ (___ (__(_ (___ / :__ 781-438-5471 -------------------------------- Jude 1:24,25 ---------------------------------
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