How can I get the system language in C/C++?

Question

How can I get the system language in C/C++? Like en_US or en_GB.

Answer 1

On a POSIX system, it looks like setlocale(LC_CTYPE, NULL); would return the current locale.

Answer 2

通常你不会 - 而是你（通常）只想符合它要求使用无名语言环境（即std::locale("");将为你提供用户选择的语言环境）。

Answer 3

Dup of Find out the language windows was installed as

In summary - "the Win32 function you want is GetSystemDefaultUILanguage()" (assuming Windows of course)

Answer 4

There isn't necessarily one system language; individual "facets" of the locale can be configured separately. It's all done with environment variables; http://www.manpagez.com/man/1/locale/ has a partial list of variables and their meanings.