• Joseph Rushton Wakeling (16/16) Apr 09 2013 Hello all,
• =?UTF-8?B?QWxpIMOHZWhyZWxp?= (6/9) Apr 09 2013 Yes it is tolerant. A single space in the format strings reads and
• Joseph Rushton Wakeling (3/4) Apr 09 2013 I actually strip the leading/trailing whitespace from the line before th...
• Joseph Rushton Wakeling (2/4) Apr 09 2013 Forgot to say thank you! This is useful to know. :-)

Joseph Rushton Wakeling <joseph.wakeling webdrake.net> writes:

Hello all,

A bit of a naive question here as text processing isn't my forte ...

Suppose I have a data file containing whitespace-separated variables, i.e.

    1 2 3
    4 5 6
    7 8 9
    10 11 12

...etc.

Naively it's easy to do something like (having got a stripped string of the
line),

    formattedRead(s, "%s %s %s", &var1, &var2, &var3);

... but is this tolerant of arbitrary differences in the whitespace between
variables?  (e.g. it might be 2 spaces not 1; or a tab; or ...)

I don't think it is, so how would I tweak the formatting string so as to ensure
that any arbitrary whitespace is taken as separating the variables to read?

Thanks & best wishes,

    -- Joe

=?UTF-8?B?QWxpIMOHZWhyZWxp?= <acehreli yahoo.com> writes:

On 04/09/2013 04:42 AM, Joseph Rushton Wakeling wrote:> Hello all,

      formattedRead(s, "%s %s %s", &var1, &var2, &var3);

 ... but is this tolerant of arbitrary differences in the whitespace 

between
 variables?  (e.g. it might be 2 spaces not 1; or a tab; or ...)

Yes it is tolerant. A single space in the format strings reads and 
ignores all white space at that spot.

I suggest you put a space before the first %s as well.

Ali

Joseph Rushton Wakeling <joseph.wakeling webdrake.net> writes:

On 04/09/2013 07:09 PM, Ali Çehreli wrote:
 I suggest you put a space before the first %s as well.

I actually strip the leading/trailing whitespace from the line before this
point, so it should be unnecessary.

Joseph Rushton Wakeling <joseph.wakeling webdrake.net> writes:

On 04/09/2013 07:09 PM, Ali Çehreli wrote:
 Yes it is tolerant. A single space in the format strings reads and ignores all
 white space at that spot.

Forgot to say thank you!  This is useful to know. :-)