INDEX(3)                            Linux Programmer's Manual                            INDEX(3)



NAME
       index, rindex - locate character in string

SYNOPSIS
       #include <strings.h>

       char *index(const char *s, int c);

       char *rindex(const char *s, int c);

DESCRIPTION
       The  index()  function returns a pointer to the first occurrence of the character c in the
       string s.

       The rindex() function returns a pointer to the last occurrence of the character c  in  the
       string s.

       The terminating null byte ('\0') is considered to be a part of the strings.

RETURN VALUE
       The  index()  and  rindex() functions return a pointer to the matched character or NULL if
       the character is not found.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The index() and rindex() functions are thread-safe.

CONFORMING TO
       4.3BSD; marked as LEGACY in POSIX.1-2001.   POSIX.1-2008  removes  the  specifications  of
       index() and rindex(), recommending strchr(3) and strrchr(3) instead.

SEE ALSO
       memchr(3),  strchr(3), string(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3),
       strtok(3)

COLOPHON
       This page is part of release 3.74 of the Linux man-pages project.  A  description  of  the
       project,  information  about  reporting  bugs, and the latest version of this page, can be
       found at http://www.kernel.org/doc/man-pages/.



GNU                                         2014-04-01                                   INDEX(3)