Referenced from lesson Sam the Butterfly - Applying Inequalities
Directions: Use the Design Recipe to
write a function
onscreen?, which takes in an x-coordinate
and checks to see if Sam is safe on the left while also being safe on the right.
Contract and Purpose Statement
Every contract has three parts…
Write some examples, then circle and label what changes…
(EXAMPLE (_________ ____) __________________________________________)
(EXAMPLE (_________ _____) ____________________________________________)
Write the definition, giving variable names to all your input values…
(define (_________ __)
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