Name
offsetof macro — Computes member offset
Synopsis
size_t offsetof(type,member-name)
The offsetof macro returns
the offset, in bytes, of a member of a struct as a constant integer. The
type must be a plain, C-style struct (Plain Old Data, or POD), and the
expression &(t.member-name
) must be an address constant,
assuming t is an instance of
type. In particular, this means the
member-name must not be a bit-field, a
static member, or a function member. (See Chapter 6 for more information about
POD types.)
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