index(3) -- Linux man page
NAME
index, rindex - locate character in string
SYNOPSIS
#include <strings.h>
char *index(const char *s, int c);
char *rindex(const char *s, int c);
DESCRIPTION
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 character is considered to be a part of the
strings.
RETURN VALUE
The index() and rindex() functions return a pointer to
the matched character or NULL if the character is not found.
CONFORMING TO
BSD 4.3
SEE ALSO
memchr(3),
strchr(3),
strpbrk(3),
strrchr(3),
strsep(3),
strspn(3),
strstr(3),
strtok(3)
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