;; The first three lines of this file were inserted by DrScheme. They record metadata
;; about the language level of this file in a form that our tools can easily process.
#reader(lib "htdp-beginner-reader.ss" "lang")((modname review) (read-case-sensitive #t) (teachpacks ((lib "draw.ss" "teachpack" "htdp") (lib "hangman.ss" "teachpack" "htdp"))) (htdp-settings #(#t constructor repeating-decimal #f #t none #f ((lib "draw.ss" "teachpack" "htdp") (lib "hangman.ss" "teachpack" "htdp")))))
;; is this a correct definition?
(define (x y z) (* y (+ z 5)))

;; if yes, what will be printed?
(x 2 3)

;; Write a function that, given a number of hours h, minutes m, and
;; seconds s, computes the total number of seconds in the time
;; interval.
;; Example: given h = 10, m = 15, s = 20, the expected value is
;; 36920

;; Write a function that converts letter grades into their
;; corresponding GPA contribution: A=4, B=3, C=2, D=1.
;; All other grades contribute 0.
;; Grades are represented by symbols: 'A, 'B, etc
;; For simplicity we assume no + or - grades.

;; Write a function that takes four letter-grades
;; and computes GPA for the semester
;; Use the function that you wrote for the previous question.

;; Write a function on-deans-list? that takes four letter-grades
;; and returns true if the student's GPA is 3.5 or above and
;; false otherwise

;; define a structure card that has a suit (a symbol 'Spades, 'Hearts, 
;; 'Diamnods, 'Clubs) and a value 2, 3, .., 10, 11 (J), 12 (Q), 13 (K),
;; 14 (A)

;; write a function "match?" that takes two cards and returns true if they have 
;; the same suit or value, false otherwise

;; write an "isValidCard?" function that takes a card structure and 
;; returns true if the card has a valid suit and a valid value and
;; false otherwise. Your function must not fail on any data.

;; 'InAcademicTrouble if
;; the GPA is < 2.0, 'MapEligible if GPA >= 3.0 and
;; 'DeansList if GPA is >= 3.5.
;; The highest result is returned. 
;; Will the condition
;; work as intended? 
;; you may assume that you are given a number

(define (How-good-is-GPA? gpa) 
  (cond
      [(< gpa 2.0) 'InAcademicTrouble] 
      [(>= gpa 3.0) 'MapEligible]
      [(>= gpa 3.5) 'DeansList]
  )
)

;; change the function if needed; 
;; add a check for errors for invalid data

;;(How-good-is-GPA? -10)