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

[Ioannis V. <no...@ho...>]

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From: Per Westermark=0D
Date: =D4=F1=DF=F4=E7, 28 =C9=E1=ED=EF=F5=DC=F1=E9=EF=F2 2003 10:43:25 =F0=
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To: Ioannis Vranos=0D
Cc: dev...@li...=0D
Subject: Re: [Dev-C++] atof 2...=0D
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sscanf can convert one or multiplie parameters from a text string into=0D
corresponding variables. The problem is that you have very little control=
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of what sscanf considers white characters etc. And in case of a conversio=
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problem, it isn't easy to point exactly at the failing character.=0D
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With strtod, you get a pointer to the first un-processed character of you=
r=0D
input string. For a parser, the normal action is to process characters on=
e=0D
at a time - that means that strotod is never called unless the parser=0D
knows that the first character is the start of a number, i.e. the next=0D
character to process is 0-9 or a decimal separator (. or , depending=0D
on locale). Uppon return of atrtod, the parser may then immediately=0D
continue parsing at the endptr position.=0D
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/Per W=0D
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=3D=3D> Yes it's a nice for-double-only valid way too. But i prefer sscan=
f() for
all this kind of stuff. :)=0D
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Ioannis Vranos=0D
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* Programming pages: http://www.noicys.freeurl.com=0D
* Alternative URL: http://run.to/noicys=20