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).

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¶

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