Illustrate "Operator Grammar" with a real$-$life examples anc orcolem$-$s

SECTION C

$)=(1$

a$.$ Optimize the above code fragment.

b$.$ Draw DAG for the optimized code

c$.$ Using $C++$ code, exolain the various code optimization teci icqu$-$s when

$2.$ Give a regular expression for the regular sets described; A i strings of that contain no three consecutive $b\text{'}$s$.$ Some example strings in the lar guage $.$ abbaaa, eps $($the empiy string$),$ baabb.

b$.$ What is the role of Symbol Table in compiler constructioni H$.$ symbu implemented.