command = "Stop"
case command
when "Go"
puts "Going"
when "Wait"
puts "Waiting"
when "Turn"
puts "Turning"
when "Stop"
puts "Stopping"
else
puts "I can't understand that."
end
# This example also could be written as an if statement with a collection of elsif and else clauses:
command = "Stop"
if command == "Go"
puts "Going"
elsif command == "Wait"
puts "Waiting"
elsif command == "Turn"
puts "Turning"
elsif command == "Stop"
puts "Stopping"
else
puts "I can't understand that."
end