From: crossd@gmail.com (Dan Cross)
Subject: [TUHS] Literal character escapes in v7
Date: Tue, 07 Nov 2017 11:21:55 +0000 [thread overview]
Message-ID: <CAEoi9W6sBM3nt9ETvCALY0_NU2yEPO6KcD8_z8YCFHmOr+B8bQ@mail.gmail.com> (raw)
In-Reply-To: <b72ba3f2-5f38-6194-4925-b3b9e0caf4b9@gmail.com>
On Mon, Nov 6, 2017, 11:21 PM Will Senn <will.senn at gmail.com> wrote:
> I wrote a snippet from my K&R C studies to convert tabs and backspaces
> to \t \b to display them, the code looks like this:
>
> /* ex 1-8 */
>
> main()
> {
> int c, sf;
>
> while((c = getchar()) != EOF) {
> if(c == '\t')
> printf("\\t");
> if(c == '\b')
>
Shouldn't this be 'else if'? Otherwise, if you encounter a tab, you will
print '\t' and then call into the 'else' below after the test for '\b' and
print c, which is a tab literal.
- Dan C.
printf("\\b");
> else
> putchar(c);
> }
> }
>
> I'm not looking for code review, but the code is intended to replace the
> tabs and backspaces with \t and \b respectively, but I haven't been able
> to test it because I can't seem to make a backspace character appear in
> input. In later unices, ^V followed by the backspace would work, but
> that's not part of v7. Backspace itself is my erase character, so
> anytime I just type it, it backspaces :).
>
> Thanks,
>
> Will
>
> --
> GPG Fingerprint: 68F4 B3BD 1730 555A 4462 7D45 3EAA 5B6D A982 BAAF
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://minnie.tuhs.org/pipermail/tuhs/attachments/20171107/530b2ff6/attachment-0001.html>
next prev parent reply other threads:[~2017-11-07 11:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-07 4:21 Will Senn
2017-11-07 4:34 ` arnold
2017-11-07 4:49 ` Will Senn
2017-11-07 5:00 ` Will Senn
2017-11-07 8:08 ` arnold
2017-11-07 9:07 ` Dennis Boone
2017-11-07 13:55 ` Will Senn
2017-11-07 11:21 ` Dan Cross [this message]
2017-11-07 14:59 ` Will Senn
2017-11-07 15:33 ` Don Hopkins
2017-11-08 16:48 ` Ralph Corderoy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAEoi9W6sBM3nt9ETvCALY0_NU2yEPO6KcD8_z8YCFHmOr+B8bQ@mail.gmail.com \
--to=crossd@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).