header
<cstddef> (stddef.h)
C Standard definitions
cstddef defines the following types:
- ptrdiff_t
- Result of pointer subtraction (type)
- size_t
- Unsigned integral type (type
)
The following macro with functional form:
- offsetof
- Return member offset (macro)
And the following macro with a constant value:
- NULL
- Null pointer (macro)
In the C language, this header also includes the declaration of the
wchar_t type (wide character type), which in C++ is a fundamental type and therefore does not require the inclusion of any header.