Allen Career Institute:Compiler Design

Question

Consider the following syntax directed definition  A → BC C.i = f1(A . i) ….. I    B.i = f2(A . s) ….. II   A.s = f3(B . s) ……. III I for inherited, s for synthesized attribute which of the following is TRUE?

(1)	(I) is violating L attributed definition
(2)	(II) is violating L attributed definition
(3)	(III) is violating L attributed definition
(4)	None of these

Comments

None of these should be the answer.

(1) -  NOT TRUE because it is L attributed . Value derived from Parent

(2) -  NOT TRUE because  again it is L attributed . Value derived from Parent.

(3) - NOT  TRUE because it is S attributed . Every S attributed is L attributed.