;========
; Fall 2026 - CS 111
; Week 1 Lab Exercise - save as lab1.rkt
;
; date: 2026-08-28
;========

;-----
; make the definitions and functions from the 2htdp/image module
;     available in this file

(require 2htdp/image)

;========
; NOTE:
; *   To receive credit for this lab exercise, you must:
;     *   be present during your scheduled lab time,
;         either in BSS 313 or in the lab Zoom session,
;         based on your lab section
;     *   participate appropriately in a pair (see below),
;         either in BSS 313 or in a Zoom breakout room
;
;========
; Pair-programming:
; *   TWO students working at ONE computer
; *   ONE student, student A, OPENS a copy of this file in
;     DrRacket
; *   the OTHER student, student B, says what to type, and student A
;     types it into this file
; *   BOTH students should be looking at the shared computer screen,
;     and discussing concepts/issues along the way
;========

;========
; USING pair-programming:
; 0. If needed, use the DrRacket "Language" menu to choose the language
;    "Beginning Student", and click the Run button in the top-right
;    corner to set that as your language.
;
; 1. COPY and PASTE the contents of this file into the DrRacket
;    Definitions window (the top window), and save as:
;
;        lab1.rkt
;
; 2. ADD comments and expressions TO THIS as specified below
;    (one student saying what to type, the other student typing it
;    into DrRacket)
;
;        ********
;    *   DO NOT DELETE THE COMMENTS! They speed up grading!
;        ********
;
; 3. SAVE the contents of your definitions window frequently
;    as you are working, to the driver's Google Drive,
;    using a file name of lab1.rkt.
;    *   (You can use the File menu's "Save Definitions" command, or
;        use its shortcut of typing the keys control-s or command-s.)
;
; 4. RUN the resulting file frequently as you are working,
;    clicking the Run button in the top-right corner
;    each time, looking over your expressions' values in
;    the Interactions window (the bottom window), and fixing
;    any errors that arise.
;
; (Need help with an error? Or just have a question?
;  *   If needed, comment out the line(s) with an error in the meantime,
;      putting ; at the beginning of each such line
;  *   Let the Learning Assistants/lab instructor know if you have a question
;  *   Note that if they are helping others, it might be a while until
;      they can get to you. Try to work on later problems while you wait,
;      and it is also fine for pairs to help each other!
;
; 5. When you are done, use Gmail to MAIL a copy of the
;    resulting filled-in lab1.rkt file to BOTH of you
;
; 6. And, EACH of you should SUBMIT this file on Canvas
;    BEFORE you leave lab.
;    (more instructions for this are at the END of this file)
;========

;=====
; Leave a blank line, and then put COMMENT(s) containing BOTH
;     of your names (include first AND last names)




;=====
; Leave a blank line, and then put a SIMPLE expression of type number




;=====
; Leave a blank line, and then put a SIMPLE expression of type string




;=====
; Leave a blank line, and then put a SIMPLE expression of type boolean




;=====
; Leave a blank line, and then put a SIMPLE expression of type image
;     (not TOO big, please!)




;=====
; Leave a blank line, and then put a COMPOUND expression of type number
;     (hint: operators + - * / and function string-length all happen to
;     return numbers)




;=====
; Leave a blank line, and then put a COMPOUND expression of type string
;     (hint: string-append expects two string arguments, and returns
;            a string that is its arguments combined into one string)




;=====
; Leave a blank line, and then put a COMPOUND expression of type image
;     (hint: function star expects a length-between-points in pixels,
;     the string "solid" or "outline", and a color name written as a
;     string, and returns a 5-pointed star image with those features)
;
;     (optional: want to try a different image operation? See the
;     "Some DrRacket Tidbits" handout posted along with this lab exercise
;     for some additional possibilities)




;=====
; Leave a blank line, and then put at least FIVE additional, different
;     compound expressions, of any data type you would like,
;     putting a blank line between each for readability










;=====
; Remember: once you have Run these and are satisfied
;     with them:
; *   Use Gmail to EMAIL copies of this file lab1.rkt
;     to BOTH of you
;
; *   BOTH of you should submit this file on Canvas
;     BEFORE you leave lab:
;     *   go to the course Canvas site (canvas.humboldt.edu,
;         select your course CS 111)
;     *   click on "Modules" on the left-hand-side
;     *   scroll down to the "Lab Exercises" section
;     *   click the "Week 1 Lab Exercise" link
;     *   follow the Canvas instructions for uploading your
;         Racket file. 
;=====