Exam #3

1. (30 points) [EOPL] Exercise 3.25 on p. 90. Name your lexical address calculator lexical-address and invoke it from the run procedure as follows:

   (define run
     (lambda (string)
       (eval-program (lexical-address (scan&parse string)))))
   

   
   
2. (45 points) [EOPL] Exercise 3.42 on p. 105.
   
   
3. (25 points) [EOPL] Exercise 3.55 on p. 114.