Check for Mistakes in this Word Problem: offscreen?
Directions: Write a function, offscreen?, which returns true if Sam the butterfly’s x-coordinate is less than -50 or greater than 690.
Contract and Purpose Statement
Every contract has three parts ...
;offscreen?:number→boolean
; Given an x-coordinate, returns true if the coordinate is less than -50 or greater than 690
Examples
Write some examples, then circle and label what changes ...
(EXAMPLE (offscreen?60)(true)
(EXAMPLE (offscreen?800)(false)
Definition
Write the definition, giving variable names to all your input values ...
(define (off-screenx-coord)(and (< x-coord -50) (> x-coord 690)))