GATE CS 2022 : Compiler Design-1 (App update required to attempt this test)

For the below SDT, what will be the output for input string 7 # 5 & 4?

E → E # T {E.val = E.val * T.val}

| T {E.val = T.val}

T → T & F {T.val = T.val + F.val}

| F {T.val = F.val}

F → num {F.val = num.val}

Consider the following SSA code:

t1 = a – b;

t2 = t1 * c;

t3 = a – b;

t4 = t3 / t1

How many minimum variables required in equivalent three address code for the above static single assignment code?

Consider the following code:

x==y&2||z++!=3;

How many tokens are identified by lexical phase while scanning the above code?