rindex
[reverse search for character in string]
SYNOPSIS #include <string.h> char *rindex(const char *string, int c);
DESCRIPTION
The function, rindex,
finds the last occurrence of c
(converted to a char) in the string pointed to by string
(including the terminating null character).
This function is identical to strrchr.
RETURNS
Returns a pointer to the located character, or a null pointer if c
does not occur in string.
COMPLIANCE
rindex
requires no supporting OS subroutines.