Name
NULL macro — Null pointer
Synopsis
#define NULL . . .
The NULL macro expands to a
null pointer constant, such as 0
or 0L.
Some C libraries declare NULL as ((void*)0) in stddef.h. This definition is fine for C,
but is wrong for C++. Most C++ compilers correctly declare NULL, but you should be aware of the
difference.
Get C++ In a Nutshell now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
