Sinistrius.NumeriRomani 1.0.0

Numeri Romani

Numeri Romani is a .NET library for dealing with Roman numerals.

Features:

• Writes integers as Roman numbers
• Parses a Roman number into an integer

Installation

Use the NuGet Package Manager to install Numeri Romani.

Usage

Restrictions

Numeri Romani currently only works for integers between 0 and 499,999.

Format Integers as Roman Numbers

Option 1: Use an extension method

You can use the Int32.ToRoman() extension method to easily format integers as Roman numbers.

using Sinistrius.NumeriRomani;

int number = 123;

string roman = number.ToRoman();
// assigns "CXXIII"

Option 2: Use a Formatter

A more sophisticated way is to use the String.Format() method with a special RomanNumeralsFormatter(). In the format string parameter you may omit the format specifier or use the general specifiers g or G or the special specifier R.

using Sinistrius.NumeriRomani;

int number = 123;

RomanNumeralsFormatter formatter = new();
string roman = String.Format(formatter, "{0:R}", number);
// assigns "CXXIII"

Parse Roman Numbers as Integers

To parse a Roman number as an integer, use the Int32.ParseRoman() or Int32.TryParseRoman() extension methods.

using Sinistrius.NumeriRomani;

string roman = "CXXXIII";

int number1 = Int32.ParseRoman(roman)
// assigns 123

bool isSuccess = Int32.TryParseRoman(roman, out int number2);
// returns true and assigns 123 to number2

License

This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.