INDEX(3P)                                           POSIX Programmer's Manual                                          INDEX(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult the corresponding Linux manual page for details of Linux behavior), or the  interface  may  not  be  implemented  on
       Linux.

NAME
       index - character string operations (LEGACY)

SYNOPSIS
       #include <strings.h>

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


DESCRIPTION
       The index() function shall be equivalent to strchr().

RETURN VALUE
       See strchr().

ERRORS
       See strchr().

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The strchr() function is preferred over this function.

       For maximum portability, it is recommended to replace the function call to index() as follows:


              #define index(a,b) strchr((a),(b))

RATIONALE
       None.

FUTURE DIRECTIONS
       This function may be withdrawn in a future version.

SEE ALSO
       strchr(), the Base Definitions volume of IEEE Std 1003.1-2001, <strings.h>

COPYRIGHT
       Portions  of  this  text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for
       Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6,  Copy-
       right (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any
       discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open  Group
       Standard   is   the   referee   document.   The   original   Standard   can   be   obtained  online  at  http://www.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                     INDEX(3P)