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.
--
Bill Davidsen <davidsen@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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