<cstddef>

 

For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.

Includes the Standard C library header <stddef.h> and adds the associated names to the std namespace.

#include <cstddef>  
  

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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