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index(3) Library Functions Manual index(3)
index, rindex - locate character in string
Standard C library (libc, -lc)
#include <strings.h> [[deprecated]] char *index(const char *s, int c); [[deprecated]] char *rindex(const char *s, int c);
index() is identical to strchr(3). rindex() is identical to strrchr(3). Use strchr(3) and strrchr(3) instead of these functions.
None.
4.3BSD; marked as LEGACY in POSIX.1-2001. Removed in POSIX.1-2008, recommending strchr(3) and strrchr(3) instead.
strchr(3), strrchr(3)
Linux man-pages 6.04 2023-03-30 index(3)