CS 356 Programming Languages Spring 2019 

Homework Assignment 4

(10 points each, 40 points total) Sebesta, Chapter 4: 3, 4, 6, 2

(10 points) Follow the instructions in sections 1-7 of the Make a language in one hour: stacker in the Beautiful Racket book to implement the stacker language, which allows addition and multiplication in a RPN or postfix form. Determine and test an RPN expression that evalutes to 2019 using only the numbers 2, 0, 1, and 9 and the operators + and *. Send me your code as an attachments to an email.


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