If translated using DAG-based three address code, how many temporary variables are created (assuming common subexpression elimination)?

Which label sequence correctly implements short-circuit evaluation?

if ((a < b && c != d) || e == f)

Consider the grammar for variable declarations: 

D → T L

Which of the following statements about this SDD is true?

Which of the following scenarios cannot be correctly implemented using only S-attributed definitions?

Write the three address code for the following code

if (x < y) then z = 1 else z = 2

Which statement is correct related to the production given below 

S → A a | B b  

Consider the following grammar

S → A d | B e  

In CLR(1), what are the lookaheads for the reduction f → A and f → B?

In three address code , how is a procedure call p(a,b) usually represented?

A Syntax Directed Translation scheme for postfix code generation is given below:

E → E1 + T   { print("+") }

For the input:

3 - 2 + 4

If the grammar is left-associative, which of the following postfix sequences will be produced?

Given the following SDD:

S → A B

For input:

x 5

where length("x") = 1 and num.val = 5.

Which is the correct evaluation order to avoid circular dependencies?