tada@e40-008-7.MIT.EDU (Michael J Zehr) (11/21/90)
Continuing the discussion of pointers to functions: you can cast them to any other pointer to function, and cast them back, and use them. i'm having a problem doing this, however (using the VAXC compiler for VMS, some fairly recent version). I tried the example in K&R2 (early edition, with the black stripe on the cover) for qsort where they first mention pointers to functions, and some other variations on it. My compiler always says: target or source of conversion is non-computable. I think the compiler is broken, but before i complain to DEC, could someone post an example of the right way to cast a function to one kind of pointer, then back, and call it? thanks, michael j zehr (i just know i'm going to regret asking this right before i leave my computer for a few days. please see if someone has posted an example before mailing me one so i don't get 100 messages.)