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Groups > comp.lang.c > #94308

Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault
Date 2016-09-30 09:16 -0700
Organization None to speak of
Message-ID <lnoa35qs6k.fsf@kst-u.example.com> (permalink)
References <75ada694-4a58-4f1d-81d1-9490a709e75d@googlegroups.com> <871t01a5fo.fsf@bsb.me.uk> <4f17ee9b-c20e-4395-becb-ae79dd7cb987@googlegroups.com>

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mark.bluemel@gmail.com writes:
> On Friday, 30 September 2016 14:22:11 UTC+1, Ben Bacarisse  wrote:
>> alla.rashitova@gmail.com writes:
>> 
>> > I don't understand why I get segmentation fault on my while loop
>> > while(source[i] != '\n' || source[i] != '\0')
>> > when i use it to run through the line, which is stored in an array.
>> 
>> A loop ends when it's condition is false, so *every time you write a loop*
>> negate the condition and check that what you get is indeed the state of
>> affairs that you want to bring about.
>
> If Ben has to explain this to you after all this time, you are still
> trying to go to fast and you are still not doing enough debugging with
> a piece of paper.

I've been programming for a long time.  I have yet to stop making silly
little mistakes now and then.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

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while(source[i] != '\n' || source[i] != '\0') segmentation fault alla.rashitova@gmail.com - 2016-09-30 05:23 -0700
  Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Alla _ <modelling.data@gmail.com> - 2016-09-30 05:27 -0700
  Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-30 14:22 +0100
    Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault mark.bluemel@gmail.com - 2016-09-30 06:37 -0700
      Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Alla _ <modelling.data@gmail.com> - 2016-09-30 07:49 -0700
      Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Keith Thompson <kst-u@mib.org> - 2016-09-30 09:16 -0700
        Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-30 14:41 -0400
    Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-09-30 06:59 -0700
    Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Alla _ <modelling.data@gmail.com> - 2016-09-30 07:46 -0700
      Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-30 16:04 +0100
  Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Ken Brody <kenbrody@spamcop.net> - 2016-09-30 10:55 -0400
  Re: while(source[i] != '\n' || source[i] != '\0') segmentation fault Barry Schwarz <schwarzb@dqel.com> - 2016-09-30 09:34 -0700

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