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Roman to Decimal numbers Converter

The numeric system represented by Roman numerals originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Roman numerals, as used today, employ seven symbols, each with a fixed integer value.

See the below table the Symbol - Value pairs:

  • I - 1
  • V - 5
  • X - 10
  • L - 50
  • C - 100
  • D - 500
  • M - 1000

User Stories​

  • User should be able to enter one Roman number in an input field
  • User could see the results in a single output field containing the decimal (base 10) equivalent of the roman number that was entered by pressing a button
  • If a wrong symbol is entered, the User should see an error

Bonus features​

  • User could see the conversion to be made automatically as I type
  • User should be able to convert from decimal to Roman (vice-versa)

Example projects​

Try not to view this until you've developed your own solution:

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