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INDEX(3) - man page online | library functions

Locate character in string.

Chapter
2015-03-02
INDEX(3)                            Linux Programmer's Manual                            INDEX(3)

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 byte ('\0') 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.
ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ┌──────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├──────────────────┼───────────────┼─────────┤ │index(), rindex() │ Thread safety │ MT-Safe │ └──────────────────┴───────────────┴─────────┘
CONFORMING TO 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.
SEE ALSO memchr(3), strchr(3), string(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)
COLOPHON This page is part of release 4.04 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 http://www.kernel.org/doc/man-pages/.
GNU 2015-03-02 INDEX(3)
This manual Reference Other manuals
index(3) referred by memchr(3) | PDL::Slices(3pm) | strchr(3) | string(3) | strpbrk(3) | strsep(3) | strspn(3) | strstr(3) | strtok(3)
refer to attributes(7) | memchr(3) | strchr(3) | string(3) | strpbrk(3) | strsep(3) | strspn(3) | strstr(3) | strtok(3)