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From: Janis Papanagnou <janis_papanagnou+ng@hotmail.com>
Newsgroups: comp.lang.c
Subject: Re: Whaddaya think?
Date: Sun, 16 Jun 2024 06:51:33 +0200
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On 16.06.2024 05:41, Janis Papanagnou wrote:
> On 16.06.2024 05:26, Lawrence D'Oliveiro wrote:
>> On Sun, 16 Jun 2024 01:56:49 +0300, Michael S wrote:
>>
>>> If you want to preserve you sanity, never use fscanf().
>>
>> Quoth the man page <https://manpages.debian.org/3/scanf.3.en.html>:
>>
>>     It is very difficult to use these functions correctly, and it is
>>     preferable to read entire lines with fgets(3) or getline(3) and
>>     parse them later with sscanf(3) or more specialized functions such
>>     as strtol(3).
> 
> This would be also my first impulse, but you'd have to know
> _in advance_ how long the data stream would be; the function
> requires an existing buffer. So you'd anyway need a stepwise
> input. [...]

Would it be sensible to have a malloc()'ed buffer used for the first
fgets() and then subsequent fgets() work on the realloc()'ed part? I
suppose the previously set data in the malloc area would be retained
so that there's no re-composition of cut numbers necessary?

Janis