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.
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