My C is rusty... I need to review pointer/address-of syntax. The idea for
the 3rd argument was to show one "passed by reference"; in any case
modifiable by the subroutine.
But where did x and y come from?
sas
On Sun, Mar 26, 2023 at 7:53 PM Frank Swarbrick <frank.swarbr...@outlook.com>
wrote:
> Also, "*k = x + y".
> ________________________________
> From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf
> of Frank Swarbrick <frank.swarbr...@outlook.com>
> Sent: Sunday, March 26, 2023 5:52 PM
> To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU>
> Subject: Re: ASM call by value
>
> I'm guessing he meant "int *k" rather than "&int k".
>
> ________________________________
> From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf
> of Paul Gilmartin <0000042bfe9c879d-dmarc-requ...@listserv.ua.edu>
> Sent: Sunday, March 26, 2023 5:49 PM
> To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU>
> Subject: Re: ASM call by value
>
> On Sun, 26 Mar 2023 19:35:59 -0400, Steve Smith wrote:
>
> >I forgot to mention, to pass by value with CALL, you need [a] register[s].
> >e.g.:
> >void foo(int i, int j , &int k)
> > {
> > k = i + j;
> > }
> >
> That shouldn't be legal. In fact, gcc gives me:
> cc tinyc.c -o tinyc
> tinyc.c:3:25: error: expected parameter declarator
> void foo(int i, int j , &int k)
>
> --
> gil
>
>
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