// Jonathan Helbert G. Crisang

//BSIT 3-2N

​

using System;

​

public class romanN {

    private int num;

    private String romanNum;

​

    public void setRoman(String n) {

            romanNum = n;

    }

​

    private int[] convertRoman(String n) {

        int[] equal = new int[romanNum.Length];

        int i = 0;

        foreach(char r in romanNum) {

            if (r == 'V') equal[i] = 5;

            else if (r == 'X') equal[i] = 10;

            else if (r == 'L') equal[i] = 50;

            else if (r == 'C') equal[i] = 100;

            else if (r == 'D') equal[i] = 500;            

            else if (r == 'M') equal[i] = 1000;

            else equal[i] = 0;

            i++;

        }

        return equal;

    }

​

    private int convertRoman(int[] dec) {

        int total = 0;

        int x = 0;

        for ( x = 0; x < romanNum.Length - 1; x++) {

            if (dec[x] >= dec[x + 1]) {

                total += dec[x];

            }

            else {

                total += (dec[x + 1] - dec[x]);

                x++;

            }

        }

        try {

            total += dec[x];

        }

        catch(Exception) {

        }

        return total;

    }

        public void convertRoman() {

            num = convertRoman(convertRoman(romanNum));

        }

        public int getResult() {

            return num;

        }

    }

public class RNtoArab {

    public static void Main(string[] args) {

            Console.Write("Roman Numerals to Arabic (Polymorphism)\n\n");

            Console.WriteLine("Enter the Roman Numeral: ");

            String Roman = Console.ReadLine();

            Roman = Roman.ToUpper();

            romanN rn = new romanN();

            rn.setRoman(Roman);

            rn.convertRoman();

            Console.WriteLine("In Arabic: {0}", rn.getResult());

    }

}