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From: Saurav on 9 Jun 2010 11:51
Hi All,

I came across the following line:
Line = fscanf(fid,'%[^\n]',1);
Can anybody please explain what does "%[^\n]" stand for?
In the documentation. I find that we can create our custom formats. But it does not give details.

Thanks a lot in advance,

With warm regards,
Saurav
From: Walter Roberson on 9 Jun 2010 12:07
Saurav wrote:

> I came across the following line:
> Line = fscanf(fid,'%[^\n]',1);
> Can anybody please explain what does "%[^\n]" stand for?
> In the documentation. I find that we can create our custom formats. But
> it does not give details.

%[^\n]

means a format specifier ('%') which is the class of characters ('[' and
']' pair) each of which is _not_ ('^') any of the listed characters,
with the list of characters being newline ('\n'). It is, in other words,
a format for getting a character string extending to (but excluding) the
end of line. Likely the following fscanf() then implicitly ignores the
end of line that would still be in the buffer.

Another way of coding the same thing would be

Line = fgetl(fid);
From: Wayne King on 9 Jun 2010 12:13
"Saurav " <mukherjee.saurav(a)gmail.com> wrote in message <huod9q$cad$1(a)fred.mathworks.com>...
> Hi All,
>
> I came across the following line:
> Line = fscanf(fid,'%[^\n]',1);
> Can anybody please explain what does "%[^\n]" stand for?
> In the documentation. I find that we can create our custom formats. But it does not give details.
>
> Thanks a lot in advance,
>
> With warm regards,
> Saurav

Hi Saurav, It's reading anything that is up to the first newline character. So if you had a file

Hi Saurav, this is just a test.
I hope this makes sense now.


Line would contain the string 'Hi Saurav, this is just a test.'

Wayne
From: Saurav on 9 Jun 2010 12:30
Thanks for the quick & clear response, Walter!

With warm regards,
Saurav

Walter Roberson <roberson(a)hushmail.com> wrote in message <d%OPn.124956$gv4.92851(a)newsfe09.iad>...
> Saurav wrote:
>
> > I came across the following line:
> > Line = fscanf(fid,'%[^\n]',1);
> > Can anybody please explain what does "%[^\n]" stand for?
> > In the documentation. I find that we can create our custom formats. But
> > it does not give details.
>
> %[^\n]
>
> means a format specifier ('%') which is the class of characters ('[' and
> ']' pair) each of which is _not_ ('^') any of the listed characters,
> with the list of characters being newline ('\n'). It is, in other words,
> a format for getting a character string extending to (but excluding) the
> end of line. Likely the following fscanf() then implicitly ignores the
> end of line that would still be in the buffer.
>
> Another way of coding the same thing would be
>
> Line = fgetl(fid);
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