Directions: A friend loves red shapes so we’ve decided to write a program that makes it easy to generate them. Write a function called red-shape
which takes in the name of a shape and makes a 20-pixel, solid, red image of the shape.
Contract and Purpose Statement |
Every contract has three parts…
red-shape: String->Image
Given a shape name, produce a solid, red, 20-pixel image of the shape.
Examples |
Write some examples, then circle and label what changes…
(EXAMPLE (red-shape "circle")(circle 20 "solid" "red"))
(EXAMPLE (red-shape "triangle")(triangle 20 "solid" "red"))
(EXAMPLE (red-shape "rectangle")(rectangle 20 20 "solid" "red"))
(EXAMPLE (red-shape "star")(star 20 "solid" "red"))
Definition |
Write the definition, giving variable names to all your input values…
(define (_________ ______)
__(cond__
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