4. Consider the following nested structure program (from the second textbook): (30 pts) let (1) var a: Integer (2) var b: Boolean in begin let (3)var b: Integer (4)var c: Boolean 0) in begin It var d: Integer(G0) let in begin let (6)var d: Boolean; (7)var e Integer begin end in end; end a) Describe how to dynamically build the identification table (symbol table) for contextual analysis.(10 pts) b). Right at (i), (ii), and (ii), show
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