Jungshik Shin écrivit: >> Except in some UNIX operating systems and specialized applications >> with specific needs, > > Note that ISO C 9x specifies that wchar_t be UTF-32/UCS-4 when > __STDC_ISO_10646__ is defined.
This is of course very pedantic (I do not believe there are existing implementations that do it), but to be exact, UCS-2 and 16-bit encoding may be used for wchar_t, while __STDC_ISO_10646__ is #defined. It is just required to be a value below 200112L (date of first version, here -2 part, of ISO/IEC 10646 that defines a character beyond BMP, the equivalent of TUS 3.0.1) Antoine
