str_rchr - find character in ASCIIZ string

       str_rchr returns the index of the last occurrance of needle or the first occurrance of \0 in string.

       str_rchr - find character in ASCIIZ string

strchr(3)

                                                                                                     str_rchr(3)

#include<libowfat/str.h>

       size_t str_rchr(const char* haystack,char needle);