(* testing if-then-else *)

main(): void {

   a, b  : int;

   {  

    if (a>3)  (* line 10: missing then *)
         b = 4;

    a = 3;

    if (a>3  then b = 4; (* line 15: missing right parenthesis *) 

    if a>3)  then b = 4; (* line 17: missing left parenthesis *) 

    a = 3

   }
}