HDTenEightyP/NetNews huggingface dataset:
From: paul@n3eop.pgh.pa.us (paul)
Newsgroups: comp.sys.ibm.pc.misc,comp.graphics,comp.binaries.ibm.pc.wanted
Subject: Re: Bambi Meets Godzilla?
Date: 15 Dec 92 12:29:48 GMT
Organization: CrossRoads in Elizabeth, PA

cgordon@vpnet.chi.il.us (gordon hlavenka) writes:

> 
>  norlin@midway.ecn.uoknor.edu (Norman Lin) writes:
> >The most amusing part of it, to me, was the slow flute music playing
> >in the background...
> 
> I believe this is the first movement of the William Tell Overture.
> Been a few years since I saw this gem, so I could be wrong.

The tape I saw it on was "Hardware Wars" by Ernie "Foss" Fosselious 
(sp?).  Excellent tape; wouldn't mind finding it on the bottom shelf in 
the back of some rental shop again someday...
Newsgroups: comp.sys.ibm.pc.misc
From: rab3u@Virginia.EDU ("Ricardo Belmar")
Subject: Re: Avoid ZEOS
Organization: University of Virginia
Date: Sat, 19 Dec 1992 17:59:38 GMT

Let me just say that I own a Zeos computer and it is one of the
best systems I have worked with. As far as their support goes I
have dealt with them on a few occassions to replace my keyboard
and video card and on other technical matters and have never
had any problems. I am currently shopping for a new 486
computer and I can tell you that Zeos is at the top of my list.

This isn't to say that Zeos is perfect. They aren't. If they
were I would have never needed to deal with their support.
While your roommate has every right to despise Zeos, you have
to understand "the big picture". In numerous surveys two
companies stand out in both product and support (look in past
PC Magazines for instance). They are Zeos and Gateway 2000.
After every good review in major computer magazines, expecially
near the holidays, these two companies have such explosive
sales, they're support rarely keeps up. I have seen message
threads on Compuserve in both companies about people
complaining about support. You are right, this is something you
have to live with when you buy mail order. Even the big players
like Dell have their problems. 

I'm not trying to preach to you, it's just that I always feel
that people need to understand that when these problems happen,
while they're not alone, they are in the minority. Forgive me
if this sounded like a lecture. I hope your roommate gets his
machine back. I too was considering trying a motherboard
upgrade from Zeos, but I was afraid something like that could
happen and so I'll just buy a new machine.

Ricardo Belmar
rab3u@virginia.edu
From: mike-b@hpfcso.FC.HP.COM (Michael Bishop)
Date: Sat, 19 Dec 1992 00:10:50 GMT
Subject: ATI Ultra Plus
Organization: Hewlett-Packard, Fort Collins, CO, USA
Newsgroups: comp.sys.ibm.pc.misc

Does anyone know if the ATI Graphics Ultra Plus (with 2MB of DRAM)
supports 1280x1024 resolution with 256 colors?  I'm considering trading
in my Diamond Stealth 24X for the ATI card and I'm looking for opinions
about ATI products.

Thanx.

Michael Bishop
Hewlett-Packard Company
Internet: mike-b@fc.hp.com
CompuServe: 71552,1341
Newsgroups: comp.sys.ibm.pc.misc,comp.sys.ibm.pc.hardware
From: timhu@ico.isc.com (Timothy Hu)
Subject: Re: Problem with 3.5" floppy drive (help!)
Organization: Interactive Systems Corp., Boulder CO
Distribution: na
Date: Fri, 18 Dec 1992 17:24:06 GMT

There's something wrong with the "change line" signal of the floppy.
Perhaps changing the cable or reseating the connectors might help. You
might have to get the floppy drive repaired/replaced.

-- 
-----
 
The intelligence (or lack of) expressed above does not necessarily reflect
the opinions/policies of Interactive Systems Corp. -- just me.
Newsgroups: comp.sys.ibm.pc.misc
From: mmangieri@vitro.com (Mikey)
Subject: Re: Stacker ate my hard disk again.  :(  help....
Organization: Vitro Corporation
Date: Wed, 16 Dec 1992 15:53:26 GMT

In article <1992Dec14.163801.27783@gn.ecn.purdue.edu>
mechalas@gn.ecn.purdue.edu (John P. Mechalas) writes:
>In article <1992Dec14.150447.4552@fcom.cc.utah.edu> dks8475@u.cc.utah.edu
(David Kenneth Slack/Music) writes:
>>
>>I have been running Stacker 2.0, and I've had no problems at all with it. 
>>When I ran the earlier version I would run into those kind of problems,
>>but 2.0 is (IMHO) 100% more stable than 1.x.  I'm sure 3.0 wouldn't be
>>LESS stable.  <smile>
>>
>>Good luck...
>
>Actually, I have been running 1.x because I have other things to spend my
>money on than the upgrades, and have neevr had *any* problems with it
>whatsoeevr.  On the other hand, I keep seeing the horror stories about
>2.0 write-protecting the volumes.

Here we go again with horror stories about write-protected disks. The write
protection is a _fail-safe Feature_ of Stacker, _not_ an error.  When Stacker
determines that an error has occured, it write protects your hard disk so that
the integrity of the data remains stable while you run the utilities to fix the
problem. Then, after re-booting the machine, all is well again. Read the manual
people  ;)

>   I don't think Stacker itself is unstable...either the 1.x or 2.0 or 3.0
>versions, in so much as the comation of Stacker + some operating systems +
>some drivers + some motherboards is unstable.  In other words, it no more
>unstable than any other program.
>

Agree!

         __________________________________________________________________
        / Michael J. Mangieri                 Internet: mmangieri@vitro.com
__     /  Vitro Corporation                      Voice:      (301) 231-3016
  \   /   MX-SP 4-2311                             FAX:      (301) 231-1233
   \ /    14000 Georgia Ave.              
    *     Silver Spring, MD 20906-2972    

         "Everything should be made as simple as possible, but not simpler."
                                                       - A. Einstein


Newsgroups: comp.sys.ibm.pc.misc
From: schuster@panix.com (Michael Schuster)
Subject: Re: SIX PACK PLUS multi I/O Card.....HELP
Date: Sat, 19 Dec 1992 12:59:26 GMT
Organization: PANIX Public Access Unix & Internet, NYC

I've sent you the clock driver by email.

Your diagram seems to be that of a Type 1 (of FOUR) SixPack Plus.

SW1-06 control the size and starting address of the card memory.

To add 384K to a PC or XT, the settings should be:

START ADDRESS  256K   SW1 off   SW2 and 3 ON
CARD MEM SIZE  386K   SW4-5 on  SW6 off
SW7 - N/A
SW8 on = parity enable

Port enable block:
   1 = com1: on
   2 = com2: on
   3 = lpt1: on
   4 = lpt2: on
   5 = game port on
   6 = clock on

IRQ block:
  3S = irq3 for com1:
  4s = irq3 for com2:
  4,5,7,2 = leave open

IRQ7 block - install for LPT1:

The RS232 jumper block controls handshaking lines. For most cases
leave the 3 jumpers between the middle and left pins of each row.  

-- 
_______________________________Mike Schuster________________________________
NY Pub. Access UNIX/Internet: schuster@panix.com | 70346.1745@CompuServe.COM
The Portal (R) System: schuster@shell.portal.com | MCI Mail,GEnie: MSCHUSTER
Newsgroups: comp.sys.ibm.pc.misc
From: lauusitalo@tnclus.tele.nokia.fi
Subject: PKzip 2.01??? What it is???
Organization: Nokia Telecommunications.
Date: Thu, 17 Dec 1992 10:32:44 GMT

        Hi,

        Has anybody heard about PKZIP 2.01???? I got it and I
        wonder how it fits in PKzip's other versions. I thought
        that last version was something about 1.93 or so.

        2.01 has ?new? compression scheme de/inflating, which does
        not decompress with 1.10. Is it just another PKzip with
        patched version number or is it trojan or something like that?

        Lauri


From: Chuck.Johnston@f886.n2000.z12.misgate.gmi.org (Chuck Johnston)
Sender: uucp@misgate.gmi.org
Newsgroups: comp.sys.ibm.pc.misc
Subject: Msdos 5.0 Vs Drdos 6.0
Date: Wed, 09 Dec 1992 19:49:01 -0700

PD>IMHO, there are 2 ways to go with DOS right now -- either DR-DOS 6.0
PD>or MS-DOS 3.30. A few hassles I've had with DR's offering have
PD>annoyed me: "slow" floppy drives [why, BTW?]; problems with TaskMax
PD>and my keyboard; others I forget now. For the rest, it's great,

Just curious: I have DOS 6.0 on my 386sx (40meg drive doubled to near-80
with SuperStor, 4meg RAM--mostly configured as EMS). I use TaskMAX constantly
to enable me to switch between WP51, Ventura, QuickVerse, PC Paintbrush,
ProComm, PCTools Desktop, et.al. I've never had trouble with "my keyboard,"
though. I find it very quick and trouble free. Maybe there's something
oneof us is missing...?

I do no what you mean abut S-L-O-W floppy access, but never connected it with
switching to DRDOS 6.0. Do YOU know the reason?

I loaded Windows 3.0 onto my machine--for about one day. I *was* really
pretty, but that about all I could see to recommend it. I guess I would
like to be able to operate my comm. software in a real multitasking envi-
ronment, but I'll find something else to make it happen.

I really think DRDOs is great, and won't lket go of it until something
*MUCH* better comes along!
   
 * OLX 2.1 TD * Hello, I am part number |||||||>||||||||

 * Origin: Taiwan Missionary BBS (12:2000/886.0)

Newsgroups: comp.sys.ibm.pc.misc
From: mlandaue@ux4.cso.uiuc.edu (Michael C Landauer)
Subject: Stacker 3.0 Questions
Summary: Stacker 3.0 Questions
Organization: University of Illinois at Urbana
Date: Sun, 13 Dec 1992 07:41:18 GMT
Keywords: Stacker 3.0


[I orginally posted this on comp.os.msdos.apps, but I haven't gotten a
response so I reposted it here]

I am considering buying Stacker 3.0 as my 40MB hard drive is almost full.
I would like to ask a couple questions to those who have used this product.

1.  What improvements were made from version 2.0?

2.  Has anyone encountered any bugs?

3.  Are there any programs that don't work with it?

4.  To anyone using it with a 40MB hard drive:  How much space did it add?

Thanx in advance!
Merry Xmas!


Mike Landauer
mlandaue@ux4.cso.uiuc.edu

------------------------------------------------------------
|                                                          |
|           "Oh, hell, I dunno." - Bono (U2)               |
|                                                          |
------------------------------------------------------------


Newsgroups: comp.sys.ibm.pc.misc
From: ftw33616@uxa.cso.uiuc.edu (.)
Subject: Re: Stacker 3.0 Questions
Organization: University of Illinois at Urbana
Date: Tue, 15 Dec 1992 15:32:11 GMT
Keywords: Stacker 3.0

duchad@aix02.ecs.rpi.edu (David Benedict Ducharme) writes:

>>4.  To anyone using it with a 40MB hard drive:  How much space did it add?
Pretty much double.  It really depends on what you are storing on your hard
disk.  Running stacker is like keeping _everything_ on your hard disk 
compressed, aka pkzip.

i.e.  If you have tons of gifs, digitized sounds, and programs compressed
with pklite, then expect _zero_ compression.

if you have normal everyday files, etc, expect roughly double.  (nice for
windows, since windows can't have pklite run on them)

If you got lotsa small files, then expect a surprising amount of 'compression'
due to merging these files and wasting less space.

>in addition I was wondering if, and how much Stacker affects the programs
>that are running.  Does it slow it down,

Well, for the most part, no.  According to my experimentation, Stacker has
some overhead when you 1st load the file, and after that, nothing.  So, if
you run a big file, no problem.

If you are opening and closing _lots_ of small files really fast, it slows
to a rock.  I discovered this when I was testing a stock analysis program I
had written - one of the algorithms computes a worksheet for each of the 200
individual companies, and saves a line of data from each one into a file.
then it loads the final file for analysis.  When doing this particular
analysis, the program sloooooowed way down.  besides that, it ran fine.

				- Frank Wang



Newsgroups: comp.sys.ibm.pc.misc
From: acm139@ccs.northeastern.edu (Scott Ehrlich)
Subject: BQS file compression format help
Organization: College of CS, Northeastern U
Distribution: usa
Date: Fri, 18 Dec 1992 19:59:17 GMT

I have some files which have the extension of .bqs.  What is this format?
The files are binary format.  I am assuming the extension denotes a compressed
file format.  What utility or program would I need to uncompress these files?

If you want an example of one of these files, look in the wuarchive FTP site
in the /mirrors/msdos/hamradio section.

Thanks for your help.

|=============================================================================|
| Scott Ehrlich 		 Internet: wy1z@meceng.coe.northeastern.edu   |
| Amateur Radio: WY1Z            Packet Radio: WY1Z @ K1UGM.MA.USA.NA	      |
|    				      					      |
|              ======        ==    					      |
|                ||          ||           				      |
|        ===================//           				      |
|           \_/		         ******************************************** |
|                                * DAH DAH DIT DIT DIT  DIT DIT DIT DAH DAH * |
|         ========		 *					    * |
|				 *	   dit dit dit dah dit dah	    * |
| Dedicated to Mr. Morse	 ******************************************** |
|									      |
|--------------------------------------------------			      |
|Disclaimer: Stop making excuses.  That's my job! |			      |
|=============================================================================|
Newsgroups: comp.sys.ibm.pc.misc
From: cravener@uhunix.uhcc.Hawaii.Edu (Patty Cravener)
Subject: no LPT1 - sometimes...
Organization: University of Hawaii
Date: Wed, 16 Dec 1992 21:48:37 GMT

I have a lovely new computer with a problem the dealer says he hasn't
a clue about (and I believe him - he's nice guy but in over his head)
Problem is that the system crashes from time to time and when it does,
there is no more parallel port.
Then I keep resetting (what else could I do?) and eventually I get it
back, as a numerical reference.  
As nearly as I can understand it, both the loss and the recover seem
to be random - if there's a pattern to it, it's beyond me...
I love my computer, and hate feeling it's erratic and unpredictable.
Why, sometimes I even use it to work on, so we can't have that...
I'll be very grateful for any words of advice from the real wizards
out there...
                                              Aloha o`i.......pc 

 
Newsgroups: comp.sys.ibm.pc.misc
From: xiongtou@cda.mrs.umn.edu (Tou P. Xiong 1578973)
Subject: Re: I.B.M.
Organization: University of Minnesota - Morris
Date: Wed, 16 Dec 1992 23:47:18 GMT

In article <cavlier.08za@xamiga.linet.org> cavlier@xamiga.linet.org writes:
>All I want to say is the I.B.M. is coming up with a new computer to compete 
>with amiga

Do you mean that IBM has do come up with a new computer in order to
compete with Amiga?  If so, it is the opposite.  Amiga has to come up
with new system to get the buyers attention, to compete with the
millions ibm and clone systems sold.

Xy
Newsgroups: comp.sys.ibm.pc.misc,comp.sys.mac.misc,misc.invest
From: huot@cray.com (Tom Huot)
Subject: Re: History was made today...
X-Newsreader: TIN [version 1.1 PL7]
Date: 18 Dec 92 09:40:01 CST

Craig Williams (craigw@fnal.fnal.gov) wrote:
: In article <1992Dec17.191137.423@walter.cray.com>, huot@cray.com (Tom Huot)
: wrote:
: > 
: > From the 1990 Almanac (I wish I had a later one)
: > Sales in Millions:
: > IBM  - 59,681
: > Apple - 4,071
: > 
: 
: Well Troy, this year Apple sold more machines than IBM. Now I dont have
: exact numbers, and no that does not include all the clones either, but it
: does illustrate a graph pointing in a direction that Mac users like to look
: at.

Maybe I should state the obvious, since you don't have the faintest
notion of what I said up there. Those figures are SALES IN MILLIONS
OF DOLLARS not PC's! That means almost 60 BILLION dollars vs. 4 BILLION
dollars. What I said up there has nothing to do with PC's.

By the way, if anyone has later sales figures, please post.

Sorry, I promised not to post again on this subject.
--
_____________________________________________________________________________
Tom Huot        			       
huot@cray.com 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Newsgroups: comp.sys.ibm.pc.misc
From: sts@mfltd.co.uk (Steve Sherwood)
Subject: PC Upgrade
Reply-To: sts@mfltd.co.uk
Organization: Micro Focus Ltd, Newbury, England
Date: Fri, 18 Dec 1992 14:43:43 GMT

I have a 286 which I am upgrading to 386/25sx.  All I want to do is to 
change the motherboard.  The problem is.. Will all of the cards work properly ?
VGA, RLL controller and a memory expansion card.

I doubt that the expansion card will work, but can I simply take out the
RAM and put it in the new board ?

Steve

-- 
+-----------------------------------+------------------------+ Micro Focus
| Just like Pariah, I have no name, |    rm -rf *            | 26 West Street
| Living in a blaze of obscurity,   |      "rum ruff splat"  | Newbury
| Need courage to survive the day.  |                        | Berkshire
+-----------------------------------+------------------------+ England
      Extn 5543, sts@mfltd.co.uk, !uunet!mfocus!sts
From: chrisk@pcx.ncd.com (Chris Kessel)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Need help with ".Z" files...
Date: 14 Dec 92 19:54:19 GMT
Article-I.D.: pcx.1992Dec14.195419.5747
Organization: Graphic Software Systems, Beaverton, OR

In article <torresce.724340604@craft.camp.clarkson.edu> torresce@craft.camp.clarkson.edu (Alex "Mystic" Soto) writes:
>comptec91006@camins.camosun.bc.ca (Michael Botten) writes:
>
>>This question doesn't really have much to do with this newsgroup, but I
>>suspect someone here will know the answer.  So here goes nothing...
>
>>What needs to be done to files ending in '.Z'  (eg. filename.ext.Z) to make
>>them usable?  I assume they are archived.  I guess I just need to know the
>>name of the archiver so I can get it from an FTP server somewhere.
>
>Actually, doesn't .Z mean they are tar'ed?  I think compressed or packed is
>small .z
>If it is tared together, you will have to go into UNIX and untar it by
>typing: tar xvf filename.ext.Z
>In case I'm wrong, you can also do a 'man tar'
>	Hope this helps.
>		Mystic
>(alex.soto@analog.com)

There is also a .Z extension for a certain DOS compression program (just
called compress I think).  It's used by some people because of it's 
Windows compatibility (I guess pkzip isn't (or wasn't) windows compatible).
You don't have to be in Windows to uncompress, but you do have to have the 
compress program.

Chris
Newsgroups: comp.sys.ibm.pc.misc
From: brumba@rtsg.mot.com (Alan J. Brumbaugh)
Subject: Re: OS/2 slower that dos 5.0?
Organization: Motorola Inc., Cellular Infrastructure Group
Date: Sat, 19 Dec 1992 23:32:38 GMT

jbayer@ispi.COM (Jonathan Bayer) writes:

>ws523669@longs.LANCE.ColoState.Edu (William Speiser) writes:

>>Can any of you pc gurus give me a hand?
>>I have an i386dx25 with 8megs.
>>I recently tried to install OS/2 and noticed a few minutes into the installation
>>that my hard disk started to sound weird. (Buzing intead of clicking? What else
>>can I say?) After it was completely installed (taking 4 hours). I noticed that
>> my machine was running much, much slower than with
>>dos. It took 15+ minutes to boot.

>>It was painfully slow the DIR command took longer to acess my hard disk than it
>>takes for floppies.


>There is a known problem with OS/2 and MFM drives.  Get the OS/2 FAQ and
>read it (look in comp.sys.os2).  I had the problem and the FAQ fixed
>it for me, but I don't have it handy.

Actually, it is in comp.os.os2.misc.
-- 
Alan J. Brumbaugh                  email: brumba@rtsg.mot.com
Motorola General Systems Sector    voice: +1 708 632 5040
1501 West Shure Drive                fax: +1 708 732 4552
Arlington Heights, IL  60004
Newsgroups: comp.sys.ibm.pc.misc
From: comptec91006@camins.camosun.bc.ca (Michael Botten)
Subject: Need help with ".Z" files...
Organization: Camosun College
Date: Fri, 11 Dec 1992 11:14:26 GMT

This question doesn't really have much to do with this newsgroup, but I
suspect someone here will know the answer.  So here goes nothing...

What needs to be done to files ending in '.Z'  (eg. filename.ext.Z) to make
them usable?  I assume they are archived.  I guess I just need to know the
name of the archiver so I can get it from an FTP server somewhere.

				Thanks for any help you can give!
_______________________________________________________________________________
               __    __   __ ___ ___  __
 /\  /\  o |/ |_    |__/ |  | |   |  |_  |\ | CompTec91006@Camins.Camosun.BC.CA
/  \/  \ I |\ |__   |__\ |__| |   |  |__ | \| VE7GRI@VE7DIE.#ISLAND.BC.CAN.NOAM
_______________________________________________________________________________
From: jbayer@ispi.COM (Jonathan Bayer)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: OS/2 slower that dos 5.0?
Date: 17 Dec 92 13:27:18 GMT
Organization: Intelligent Software Products, Inc.

ws523669@longs.LANCE.ColoState.Edu (William Speiser) writes:

>Can any of you pc gurus give me a hand?
>I have an i386dx25 with 8megs.
>I recently tried to install OS/2 and noticed a few minutes into the installation
>that my hard disk started to sound weird. (Buzing intead of clicking? What else
>can I say?) After it was completely installed (taking 4 hours). I noticed that
> my machine was running much, much slower than with
>dos. It took 15+ minutes to boot.

>It was painfully slow the DIR command took longer to acess my hard disk than it
>takes for floppies.


There is a known problem with OS/2 and MFM drives.  Get the OS/2 FAQ and
read it (look in comp.sys.os2).  I had the problem and the FAQ fixed
it for me, but I don't have it handy.


JB
-- 
Jonathan Bayer		Intelligent Software Products, Inc.
(908) 248-1853		37 Winthrop Rd. 
jbayer@ispi.COM		Edison, NJ   08817
Newsgroups: comp.sys.ibm.pc.misc
From: sknkwrks@sonny-boy.cs.unlv.edu (Scott Alfter)
Subject: Re: double to high density diskette convert??
Organization: Skunk Works Software Co.
Date: 11 Dec 92 21:25:55 GMT

In article <1992Dec11.204253.26900@cs.mcgill.ca> spader@statler.cs.mcgill.ca (Yoo-Shin LEE) writes:
>I'd also like to know about programs such as FDformat which allow you 
>to format for 2 mbs on a hd disk.  Are they safe and reliable?
>I have a friend who used to always fdformat(2meg) his disks and use the
>double hole punch routine.  His 1.44 meg drive is screwed now and doesn't
>copy reliably.  I think it is because of his abuse of the above methods.

Given that the Amiga's standard high-density format is somewhere near
the 1.72 megs that FDFORMAT can put on a disk, I'd think that
FDFORMAT is safe--as long as you use it with REAL high-density disks.

I tried punching a DD disk to HD once...didn't work.  Save yourself
the aggravation of lost data--don't punch disks.  The only time it's
safe to punch disks is when you're working with single-sided 5.25"
drives (as with an Apple II)...you can punch another notch to use the
other side of those disks without problem (I've been doing that for
over seven years and have never lost a disk).

  _/_   Scott Alfter                             Internet: sknkwrks@cs.unlv.edu
 / v \  Call the Skunk Works BBS today!           Ask me about SoftDAC--digital
(IIGS(  (702) 894-9619 300-14400 V.32bis          audio for your Apple IIe/IIc!
 \_^_/  --==## "Apple II Forever" is a trademark of Apple Computer, Inc. ##==--
Newsgroups: comp.sys.ibm.pc.misc
From: zonnevel@dutiws.twi.tudelft.nl (B.J.Zonneveld.tel-015-622622)
Subject: Logitech mouse question
Organization: Delft University of Technology
Date: Wed, 16 Dec 1992 02:25:29 GMT

I have a Logitech mouse and use dos-driver 6.00 and Windows driver 2.0. I some-
times have trouble getting the mouse at the correct spot in MS Windows. Is this
the fault of the driver or of the hardware. I load the DOS-driver before I start
windows (because I can't find a way to load it only when I start a DOS-prompt
in windows). COuld this cause trouble?

COuld anybody who knows how to solve this please mail me.

BTW I heard there is a DOS-driver version 6.12 or later. Is this ftp-able from
some place. Is there a new Windows driver too? (Maybe this could solve the
trouble in one go :-)

Greetings, Bart

Newsgroups: comp.sys.ibm.pc.misc