[Go to CFHT Home Page] Man Pages
Back to Software Index  BORDER=0Manpage Top Level
    INDEX(3) manual page Table of Contents

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 (aq\0aq) 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

Multithreading (see pthreads(7) )

The index() and rindex() functions are thread-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 3.78 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/.

Table of Contents