Ruby provides a number of ways to get input from the user. we will use gets in this example. The gets method is basically the opposite of puts — instead of printing stuff, it gathers what the user types for you. puts "Welcome to Shapes"
After print statement, collect the user’s input into a variable (shape_size):
print "How big do you want your shape? "
print "How big do you want your shape? "
shape_size = gets
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