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INDEX(3)		 BSD Library Functions Manual		      INDEX(3)

     index, rindex — locate character in string

     Standard C Library (libc, -lc)

     #include <strings.h>

     char *
     index(const char *s, int c);

     char *
     rindex(const char *s, int c);

     The index() function locates the first occurrence of c (converted to a
     char) in the string pointed to by s.  The terminating null character is
     considered part of the string; therefore if c is ‘\0’, the functions
     locate the terminating ‘\0’.

     The rindex() function is identical to index(), except it locates the last
     occurrence of c.

     The functions index() and rindex() return a pointer to the located char‐
     acter, or NULL if the character does not appear in the string.

     memchr(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3),
     strspn(3), strstr(3), strtok(3)

     The index() and rindex() functions appeared in Version 6 AT&T UNIX.
     Their prototypes existed previously in <string.h> before they were moved
     to <strings.h> for IEEE Std 1003.1-2001 (“POSIX.1”) compliance.

BSD				 June 4, 1993				   BSD

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