Manpages - index.3

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).

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.

*memchr*(3), *strchr*(3), *string*(3), *strpbrk*(3), *strrchr*(3), *strsep*(3), *strspn*(3), *strstr*(3), *strtok*(3)

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