INDEX

Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
Index Return to Main Contents

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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

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 4.13 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/.

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ATTRIBUTES

CONFORMING TO

SEE ALSO

COLOPHON