NetNews Usenet Archive 1993 #3/NN_1993_3.iso/spool/comp/lang/c/19999

Internet Message Format | 1993-01-21 | 2.8 KB

Path: sparky!uunet!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!neoucom.edu!aldhfn!Dean_Wagner
From: [e-mail] (Dean_Wagner)
Subject: More help (mostly os2/dos specific)
Newsgroups: comp.lang.c
Summary:
Keywords:
X-Newsreader: TIN [version 1.1 PL8]
Message-ID: <[e-mail]>
Date: 20 Jan 93 21:56:55 EST
Organization: Auldhaefen Associates
Lines: 55

Thanks to all who responded to my question about text entry.  I was looking
for a way to have the cursor not enable a person to enter more than
MAX_LENGTH characters.  My actual problem was lack of a null ending my
string.

Here's some more things I could use some help with:

1)   do Microsoft C DOS graph functions work with os2?  I was trying to
use clearscreen, but got an unresolved external from inside the library
function.  I don't have the exact error here, but it said something like
(..\gr\something.asm: ___somevar).  Does this mean the graphics library
uses something defined in the asm file (which obviously isn't there)?  I
reinstalled the compiler, but got no option to load that file, or anything
in a gr directory.

2)   This was a problem I had at work, and it was solved, but the
solution required changing the question - I was curious about the solution
to the question as it originally was:
     Given a 2-dimensional array, how is it possible to dynamically
allocate memory for the first dimension?  In other words, I wanted to
changed the declaration from
record[56][5] to
*record[5] or record[][5]

I tried several ways to allocate memory for this definition, but couldn't
figure out what I was doing wrong.  Here were the suggestions from co-
workers...
     Change the second dimension to a structure (works, but I didn't
     want to rewrite the program, just make it more versatile)

     record = malloc(sizeof(int)*5*number) - it wouldn't let me, saying
     that record must be an lvalue.

     allocate 4k, since that's the smallest size possible with os2
     anyways.

The final solution, which was "why bother?  the largest number possible is
64", made me beat myself over the head many, many times.  Anyways, I'm
still wondering how I would have allocated the memory, given the
declarations mentioned above.

3)   Can anyone suggest a good manual for programming software to be
used ona BBS?  That's what I'm doing now, and it's something I never did in
school or elsewhere.

4)   Is there any representation for the delete key in printf?  Right
now, I use "\b \b", which backspaces, spaces, and backspaces again.  It's
functional, but certainly not efficient.

Thanks in advance,

--
Dean Wagner                        Nothing matters but the weekend
[e-mail]    From a Tuesday point of view
[e-mail]             -Switch into Glide, The Kings