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stddef.h |
Header File |
ANSI definitions of default macros and types
Functions
- offsetof
- Returns the offset of a member in a structure.
Constants
- NULL
- A null-pointer value.
Predefined Types
- ptrdiff_t
- A type to define the result of subtracting two pointers.
[Explanation]
ptrdiff_t is a type proposed by ANSI C for defining the result of subtracting
two pointers (e.g. the first address after the end of an array minus the
beginning of the array).
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- size_t
- A type to define sizes of strings and memory blocks.