константы языковой информации (language information constants)
Использование в приложениях (Application usage)
Wherever possible, users are advised to use functions compatible
with those in the ISO C standard to access items of langinfo
data. In particular, the strftime() function should be used to
access date and time information defined in category LC_TIME.
The localeconv() function should be used to access information
corresponding to RADIXCHAR, THOUSEP, and CRNCYSTR.
