Use the Design Recipe to write a function is-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…
___________::______->_______
_
Examples |
Write some examples, then circle and label what changes…
examples:
___________ (___) is ________________________________________
___________ (____) is __________________________________________
end
Definition |
Write the definition, giving variable names to all your input values…
fun ___________(_):
____________________________________
end
These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). 
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