We recommend using Visual Studio 2017
<clocale>
Visual Studio 2015
The latest version of this topic can be found at <clocale>.
Includes the Standard C library header <locale.h> and adds the associated names to the std
namespace.
#include <clocale>
Including this header ensures that the names declared using external linkage in the Standard C library header are declared in the std
namespace.
Header Files Reference
STL Overview
Thread Safety in the C++ Standard Library
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