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2
realloc
(
thing
)
by
everyone
Sun Jul 30 2000 at 20:07:06
The
C
function
for
reallocating
memory
previously
allocated
by
malloc
and friends
. In other words, it
changes
the
size
of
allocated
memory
.
#include <stdlib.h>
void *realloc( void *ptr, size_t size );
It
returns
a
pointer
to the new
piece
of
memory
, or
NULL
if it
failed
. If it returns
NULL
,
ptr
is
unchanged
, and of course,
errno
is set. If
ptr
is
NULL
, it returns
malloc
(size)
. If
size
is
zero
, the
call
is
equivalent
to
free
(ptr)
.
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