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

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

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.

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. :-)