'Why executing std::setlocale(LC_ALL, "C") at startup?
Cppreference.com says:
During program startup, the equivalent of std::setlocale(LC_ALL, "C"); is executed before any user code is run.
Calling std::setlocale(LC_ALL, "C"); sets the current locale to "C": basically a special, minimalistic locale where strings are seen as simple chunk of bytes, no knowledge of characters and so on.
This obviously affects how locale-dependent functions work (e.g. fprintf, tolower, ...). Why is that? Should I revert the locale to something else if I want to work with UTF-8 strings in my program?
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