(* testing r-expr *)

main(): void {

  k: int;

  {  
          i = 3 + 6 9; (* line 9: missing operator *)   
 
          a = 90;   

          b = 9 ++ 9;  (* line 13: missing operand *)

          a = 8;

          b = (a > );   (* line 17: missing operand *)

          b = (2 + c) * 8 - (-3 +9);

          b = (2 + c) * 8 - (-3 +9)); (* line 21: unbalanced paranthesis *)

          a = 8;

          b = ((6 + d) - (-3 +9); (* line 25: unbalanced paranthesis *)

          c = 9 + foo(2, b+c 3);  (* line 27: error in function call *)

          a = 8;

          b = k[4][ + 2; (* line 31: missing right bracket  *)

          b = m[4]8] + 2; (* line 33: missing left bracket *)
   }

}