roman-numeral

roman-numeral

Convert roman numeral to decimal number or viceversa.

Installation

To use the roman numerals gem, you need to add this line to your Gemfile

gem 'roman-numeral'

And then execute:

$ bundle

Or install it yourself as:

$ gem install roman-numeral

##Usage In irb console:

Convert roman numeral to decimal number

>> require 'roman-numeral'

>> r = RomanNumeral.new("IV")
>> r.to_decimal
=> 4

>> r = RomanNumeral.new("IVI")
>> r.to_decimal
=> "Invalid numeral IVI"

Convert decimal number to roman numeral

>> d = RomanNumeral.new(17)
>> d.to_roman
=> "XVII"

>> r = RomanNumeral.new(10.23)
>> r.to_roman
=> "Invalid numeral 10.23"

###Basic working principles of roman-rumeral In order to convert roman numeral to decimal nuber, it works like a State Machine.