NAME
index
- locate character in string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
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
.
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)
HISTORY
An
index(
)
function appeared in
Version 6 AT&T UNIX
.