STRRCHR(3P) POSIX Programmer's Manual STRRCHR(3P)PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAMEstrrchr — string scanning operation
SYNOPSIS
#include <string.h>
char *strrchr(const char *s, int c);
DESCRIPTION
The functionality described on this reference page is aligned with the
ISO C standard. Any conflict between the requirements described here
and the ISO C standard is unintentional. This volume of POSIX.1‐2008
defers to the ISO C standard.
The strrchr() function shall locate the last occurrence of c (converted
to a char) in the string pointed to by s. The terminating NUL charac‐
ter is considered to be part of the string.
RETURN VALUE
Upon successful completion, strrchr() shall return a pointer to the
byte or a null pointer if c does not occur in the string.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
Finding the Base Name of a File
The following example uses strrchr() to get a pointer to the base name
of a file. The strrchr() function searches backwards through the name
of the file to find the last '/' character in name. This pointer (plus
one) will point to the base name of the file.
#include <string.h>
...
const char *name;
char *basename;
...
basename = strrchr(name, '/') + 1;
...
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSOstrchr()
The Base Definitions volume of POSIX.1‐2008, <string.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the source
files to man page format. To report such errors, see https://www.ker‐
nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 STRRCHR(3P)
