How to format a DOUBLE to print only two decimals in Eiffel?

Question

In eiffel how do you make it so that the number.

118.1999999999999

prints to:

118.20 

In other language is simply a matter of printf but there seems no to be a way to do that easily in Eiffel.

Answer 1

For example:

class DOBLE

creation
    make

feature
    make is
      local
          n: DOUBLE
          output: STRING
      do
          n := 118.1999999999999
          output := n.to_string_format(2) -- 2 digits in fractionnal part
          std_output.put_string(output + "%N")
      end
end