Originální popis anglicky:
index, rindex - locate character in string
Návod, kniha: Linux Programmer's Manual
#include <strings.h>
char *index(const char *s, int c);
char *rindex(const char *s, int c);
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.
The
index() and
rindex() functions return a pointer to the matched
character or NULL if the character is not found.
BSD 4.3
memchr(3),
strchr(3),
strpbrk(3),
strrchr(3),
strsep(3),
strspn(3),
strstr(3),
strtok(3)