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From: Malcolm McLean <malcolm.arthur.mclean@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: saving fileXXX.bmp
Date: Sun, 24 Mar 2024 23:26:53 +0000
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On 24/03/2024 21:26, fir wrote:
> fir wrote:
>> i want to save bitmap (when using editor) but i dont wannt
>> to pen a dialog for saving ui just wana do quicksave but not replace
>> the file already exist so i want to maybe use such scheme i will sawe
>>
>> "painting001.bmp" and if there is such number i will just increase
>> the number to 002 if such exist i will use 003 and so on
>>
>> do yu thing it is standable to use c std lib (and probably just
>> fopen fclose to detect if that file already exist of there is a need
>> to use some specific windows functions?
>>
>> i never used it though - though maybe i could becouse code
>> that is able to walk on directories and read all files may be handy
>> for various practical usage (liek finding something , removing
>> duplicates etc)
> 
> the question is if if somoene would work longer and had 1000 bitmaps in 
> folder if this will not slow down, or still be fast etc...could check
> experimentally but even then i wouldnt be sure if this is kinda optimal 
> or wastefull way

Opening a file is rather a slow operation. But not so slow on most 
platforms. Of course there will come a point where the approach is 
simply too slow. But for saving human-generated bitmaps I don't think 
you'll test the limits.

-- 
Check out Basic Algorithms and my other books:
https://www.lulu.com/spotlight/bgy1mm