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This function is obsolete.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.