string[] = "AaBbCcDd"; 

size_in_bytes = length ("AaBbCcDd");                                           /* "char[]" */

size_in_bytes = length (string);                                               /* "char[]" */

size_in_bytes = length (pointer), { pointer = &string[0] };                    /* "pchar" */

size_in_bytes = length (pointer), { pointer = &string[5] };                    /* "pchar" */