.\" Copyright, the authors of the Linux man-pages project
.\"
.\" SPDX-License-Identifier: Linux-man-pages-copyleft
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.TH index 3 2026-08-10 "Linux man-pages 6.19"
.SH NAME
index, rindex \- string search character
.SH LIBRARY
Standard C library
.RI ( libc ,\~ \-lc )
.SH SYNOPSIS
.nf
.B #include <strings.h>
.P
.BI "[[deprecated]] char *index(const char *" s ", int " c );
.BI "[[deprecated]] char *rindex(const char *" s ", int " c );
.fi
.SH DESCRIPTION
.BR index ()
is identical to
.BR strchr (3);
user the latter instead.
.P
.BR rindex ()
is identical to
.BR strrchr (3);
use the latter instead.
.SH STANDARDS
None.
.SH HISTORY
4.3BSD;
marked as LEGACY in POSIX.1-2001;
removed in POSIX.1-2008.
.SH SEE ALSO
.BR strchr (3),
.BR strrchr (3)