NAME
rindex —
locate character in
string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <strings.h>
char *
rindex(
const char
*s,
int c);
DESCRIPTION
The
rindex() function locates the last character matching
c (converted to a
char) in the
nul-terminated string
s.
This function is obsolete. The equivalent function
strrchr(3) should be used
instead.
RETURN VALUES
A pointer to the character is returned if it is found; otherwise
NULL
is returned. If
c is
‘
\0
’,
rindex() locates
the terminating ‘
\0
’.
SEE ALSO
index(3),
memchr(3),
strchr(3),
strcspn(3),
strpbrk(3),
strrchr(3),
strsep(3),
strspn(3),
strstr(3),
strtok(3)
STANDARDS
The
rindex() function conforms to
IEEE Std
1003.1-2001 (“POSIX.1”). The
IEEE Std
1003.1-2004 (“POSIX.1”) revision marked it as legacy and
recommended the use of
strrchr(3) instead. The
IEEE Std 1003.1-2008 (“POSIX.1”) revision
removed
rindex() from the specification.
HISTORY
A
rindex() function appeared in
Version 6 AT&T UNIX.