davidvgus/homework — comment on commit db78b20b4c0843f05edb60bbbde9df66407f2ab4
File: convert_challenge.rb line 25
By kotp:

Still there shouldn't be an upper limit, as it is perfectly valid to have a 200C temperature. The temperature of the sun, for example could be expressed in any temperature, and would be much higher than the boiling point of water.