Reference C Library IOstream Library Strings library STL Containers STL Algorithms Miscellaneous C Library cassert (assert.h) cctype (ctype.h) cerrno (errno.h) cfloat (float.h) ciso646 (iso646.h) climits (limits.h) clocale (locale.h) cmath (math.h) csetjmp (setjmp.h) csignal (signal.h) cstdarg (stdarg.h) cstddef (stddef.h) cstdio (stdio.h) cstdlib (stdlib.h) cstring (string.h) ctime (time.h) cstring (string.h) functions: memchr memcmp memcpy memmove memset strcat strchr strcmp strcoll strcpy strcspn strerror strlen strncat strncmp strncpy strpbrk strrchr strspn strstr strtok strxfrm macros: NULL types: size_t

NULL macro <cstring> Null pointer This macro expands to a null pointer constant. A null pointer is generally used to signify that a pointer does not point to any object. In C++, NULL expands either to 0 or 0L.

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