index, rindex — locate character in string
#include <strings.h>
char
*index( |
const char *s, |
int c); |
char
*rindex( |
const char *s, |
int c); |
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.
The index() and rindex() functions return a pointer to the
matched character or NULL if the character is not found.
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.
memchr(3), strchr(3), string(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)
This page is part of release 3.34 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at http://man7.org/linux/man-pages/.
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Copyright 1993 David Metcalfe (davidprism.demon.co.uk) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. References consulted: Linux libc source code Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) 386BSD man pages Modified Mon Apr 12 12:54:34 1993, David Metcalfe Modified Sat Jul 24 19:13:52 1993, Rik Faith (faithcs.unc.edu) |