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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
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INDEX(3) Linux Programmer's Manual INDEX(3)
index, rindex - locate character in string
#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 byte ('\0') 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.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│index(), rindex() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
4.3BSD; marked as LEGACY in POSIX.1-2001. POSIX.1-2008 removes
the specifications of index() and rindex(), recommending
strchr(3) and strrchr(3) instead.
memchr(3), strchr(3), string(3), strpbrk(3), strrchr(3),
strsep(3), strspn(3), strstr(3), strtok(3)
This page is part of release 5.13 of the Linux man-pages project.
A description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
GNU 2021-03-22 INDEX(3)
Pages that refer to this page: memchr(3), strchr(3), string(3), strpbrk(3), strsep(3), strspn(3), strstr(3), strtok(3)
Copyright and license for this manual page
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