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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?:numberboolean
;
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, given variable names to all your input values...
(define (
off-screenx-coord)(and (< x-coord -50) (> x-coord 690)))