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Command: index | Section: 3 | Source: MINIX | File: index.3
INDEX(3) FreeBSD Library Functions Manual INDEX(3)
NAME
index - locate character in string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <strings.h>
char *
index(const char *s, int c);
DESCRIPTION
The index() function locates the first character matching c (converted to
a char) in the nul-terminated string s.
This function is obsolete. The equivalent function strchr(3) should be
used instead.
RETURN VALUES
A pointer to the character is returned if it is found; otherwise NULL is
returned. If c is '\0', index() locates the terminating '\0'.
SEE ALSO
memchr(3), rindex(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3),
strsep(3), strspn(3), strstr(3), strtok(3)
STANDARDS
The index() function conforms to IEEE Std 1003.1-2001 ("POSIX.1"). The
IEEE Std 1003.1-2004 ("POSIX.1") revision marked it as legacy and
recommended the use of strchr(3) instead. The IEEE Std 1003.1-2008
("POSIX.1") revision removed index() from the specification.
HISTORY
An index() function appeared in Version 6 AT&T UNIX.
FreeBSD 14.1-RELEASE-p8 May 5, 2012 FreeBSD 14.1-RELEASE-p8