On 06 Oct 96, Paul Edwards wrote to Paul Wankadia --



FA> So sizeof() will return the length of the pointer.

PW> I seem to get 2...

 PE> In small memory model you will get that.  Try compiling in large, and

 PE> you'll get 4.



What sort of pointers does large model use?  Far?  Does huge model use huge

pointers?



PW> BTW how can I make a pointer to point to a set place in memory (i.e.

PW> segment and offset) ???

 PE> Borland provide a MK_FP macro.



Righto 



FA> Perhaps if the string is global it may also work, but i didn't try or

PW> What's wrong with global variables? :)

 PE> Nothing more than global functions.



I was told (prior to this) that global variables should be cut down as much

as possible.



BTW the way you said "global functions" -- is it possible to
declare (this is

a silly question) a "local" function, accessible from inside
another function

ONLY???



FA> alloced block size somewhere, it only seems to work with the Borland RTL.

PW> What's RTL?

 PE> Run Time Library.



As I've been told :)  Thanks.



PW> BTW I'd rather keep the code as portable as possible (between

 PE> Good to see.  You should have a bloody good reason not to make it

 PE> portable, rather than the other way around.  And isolate out the



When you say portable, do you mean portable between DOS compilers, or between

DOS and Unix, or usable on any platform, or what?  I have always been a tad

confused about that term.  BTW what non-portable functions and stuff exist in

Turbo C++ v3.0 that I should be aware of?



 PE> non-portable bits, either into separate source files, or at least put



I try to keep the code together...  Yes, I do use PRJs, but it is a little

bit of a hassle playing around with the main source and the header already.

And yes -- I will not make a good programmer if that's the way I am now :)



 PE> a #ifdef around it (and make the #ifdef the non-default, and make it

 PE> still do *something* on an ISO-only environment).  BFN.  Paul.



I have used #ifdef before...  BTW you seem rather knowledgeable -- if you

haven't already replied about this, what EXACTLY does "extern
\"C\"" do and

mean???



Chow.



Junyer Hakker.



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