Why std::wcout << L"ي" << std::endl; doesn't print actual character?
#include <iostream>
#include <locale>
int main()
{
std::locale::global (std::locale ("en_US.UTF-8"));
std::cout << "ي" << std::endl;
std::wcout << L"ي" << std::endl;
}
DEMO I define a suitable locale, but it still doesn't work
The error is mixing std::cout and std::wcout:
27.4 Standard iostream objects
[iostream.objects]27.4.1 Overview
[iostream.objects.overview]3 Mixing operations on corresponding wide- and narrow-character streams follows the same semantics as mixing such operations on FILEs, as specified in Amendment 1 of the ISO C standard.
7.21.2 Streams
4 Each stream has an orientation. After a stream is associated with an external file, but before any operations are performed on it, the stream is without orientation. Once a wide character input/output function has been applied to a stream without orientation, the stream becomes a wide-oriented stream. Similarly, once a byte input/output function has been applied to a stream without orientation, the stream becomes a byte-oriented stream. Only a call to the freopen function or the fwide function can otherwise alter the orientation of a stream. (A successful call to freopen removes any orientation.)267)
5 Byte input/output functions shall not be applied to a wide-oriented stream and wide character input/output functions shall not be applied to a byte-oriented stream. [...]
See here for a better demonstration highlighting what goes wrong and what does not:
http://coliru.stacked-crooked.com/a/5c3a34c0c4523016
