Re: [Dev-C++] atof 2...

[Per W. <pw...@ia...>]

sscanf can convert one or multiplie parameters from a text string into
corresponding variables. The problem is that you have very little control
of what sscanf considers white characters etc. And in case of a conversion
problem, it isn't easy to point exactly at the failing character.

With strtod, you get a pointer to the first un-processed character of your
input string. For a parser, the normal action is to process characters one
at a time - that means that strotod is never called unless the parser
knows that the first character is the start of a number, i.e. the next
character to process is 0-9 or a decimal separator (. or , depending
on locale). Uppon return of atrtod, the parser may then immediately
continue parsing at the endptr position.

/Per W

On Sun, 19 Jan 2003, Ioannis Vranos wrote:

> ------Original Message-------
>
> From: Per Westermark
> Date: Sunday, 19 January 2003 10:48:26 PM
> To: j b
> Cc: dev...@li...
> Subject: Re: [Dev-C++] atof 2...
>
> Hello!
>
> Don't use atof() for converting from text string to a double.
>
> Use strtod() instead, since it will inform you how many characters it
> consumed.
>
>
>
> ==> What about sscanf()?
>
>
>
> Ioannis Vranos
>
> * Programming pages: http://www.noicys.freeurl.com
> * Alternative URL: http://run.to/noicys