       :: (the unary form associates R/L)  <-- only in C++
      ( )  [ ]  ->  . 

 R/L  ++  --  +  -  !  ~  (cast)  * &  sizeof

      .*  ->*  <-- only in C++

      *  /  %

      +  -

      << >>

      <  <=  >  >=

      ==  !=

      &

      ^

      |

      &&

      ||

 R/L  ? :

 R/L  =  +=  -=  *=  /=  %=  &=  ^=  !=  <<=  >>=

       ,