COHERENT manpages
This page displays the COHERENT manpage for NULL [Manifest Constant].
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NULL -- Manifest Constant The manifest constant NULL is defined in the header file stddef.h. It is the null pointer (char *)0, which is a pointer initialized to zero. Numerous routines return this value to indicate failure; it is useful as a return value because it points nowhere, and so removes the possibility of accidentally destroying a section of memory after failure. See Also manifest constant, NUL, pointer, stdio.h ANSI Standard, §7.1.6