#include <iostream>
#include <locale>
int main()
{
const wchar_t c = L'\u042f'; // cyrillic capital letter ya
std::locale loc2("en_US.UTF8");
std::cout << "isalpha('Я', Unicode locale) returned "
<< std::boolalpha << std::isalpha(c, loc2) << '\n';
}
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