stddef.h

From: http://www.cplusplus.com/reference/cstddef/

<cstddef> (stddef.h)

C Standard definitions

This header defines several types implicitly generated or used by certain language expressions.

Types

ptrdiff_t

Result of pointer subtraction (type)

size_t

Unsigned integral type (type)

max_align_t

Type with widest scalar alignment (type)

nullptr_t

Null pointer type (C++) (type)

In C, this header also includes the declaration of the wchar_t type (wide character type), which in C++ is a language keyword that identifies a distinct fundamental type (no header inclusion required in C++).

Macro functions

offsetof

Return member offset (macro)

Macro constants

NULL

Null pointer (macro)