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#!/usr/bin/env ruby
BEGIN { puts "Date and time: " + Time.now.to_s }
def bmi( weight, height )
  703.0*( weight.to_f/(height.to_f**2))
end
my_bmi = bmi( 196, 73 )
puts "Your BMI is: " + x = sprintf( "%0.2f", my_bmi )