Home/ Questions/Q 576213
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-13T14:01:24+00:00

A user of my program has reported problems reading a settings file written by

  • 0

A user of my program has reported problems reading a settings file written by my program. I looked at the settings file in question and instead of decimal points using the period “.” it uses commas “,“.

I’m assuming this is to do with locales?

The file i/o is using fprintf and mpfr_out_str for file output and getline combined with atol, atof, mpfr_set_str, etc for file input.

What do I do here? Should I force my program to always use periods even if the machine’s locale wants to use commas? If so, where do I start?

Edit: I’ve just noticed that this problem occurs when specifying the settings file to use on the command line instead of loading it via the GUI – would this indicate a problem on the OP’s machine or in my code?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Do you call setlocale at all? If not, I would suggest either embedding the locale used to generate the file in the settings file or force all settings file I/O to use the C locale, via the previous suggestion of setlocale(LC_ALL, "C").

    One other option is to use the locale specific formatting functions (suffixed with _l in MSVC) and create the C locale explicitly, via _create_locale(LC_ALL, "C").

    • 0