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STRCPY
!!!STRCPY
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
BUGS
CONFORMING TO
SEE ALSO
----
!!NAME


strcpy, strncpy - copy a string
!!SYNOPSIS


__#include
__''dest''__, const char *__''src''__);
char *strncpy(char *__''dest''__, const char *__''src''__, size_t__ ''n''__);
__
!!DESCRIPTION


The __strcpy()__ function copies the string pointed to by
''src'' (including the terminating `0' character) to the
array pointed to by ''dest''. The strings may not
overlap, and the destination string ''dest'' must be
large enough to receive the copy.


The __strncpy()__ function is similar, except that not
more than ''n'' bytes of ''src'' are copied. Thus, if
there is no null byte among the first ''n'' bytes of
''src'', the result wil not be
null-terminated.


In the case where the length of ''src'' is less than that
of ''n'', the remainder of ''dest'' will be padded
with nulls.
!!RETURN VALUE


The __strcpy()__ and __strncpy()__ functions return a
pointer to the destination string ''dest''.
!!BUGS


If the destination string of a __strcpy()__ is not large
enough (that is, if the programmer was stupid/lazy, and
failed to check the size before copying) then anything might
happen. Overflowing fixed length strings is a favourite
cracker technique.
!!CONFORMING TO


SVID 3, POSIX, BSD 4.3, ISO 9899
!!SEE ALSO


bcopy(3), memccpy(3), memcpy(3),
memmove(3)
----

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Last edited on Tuesday, June 4, 2002 12:24:35 am by "perry"

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