Basic NumberUtil

NumberUtil.cs

using UnityEngine;

public class NumberUtil{
  public static string ToRoman(int number)
    {
        if ((number < 0) || (number > 3999)) Debug.LogError("insert value betwheen 1 and 3999");
        if (number < 1) return string.Empty;            
        if (number >= 1000) return "M" + ToRoman(number - 1000);
        if (number >= 900) return "CM" + ToRoman(number - 900); //EDIT: i've typed 400 instead 900
        if (number >= 500) return "D" + ToRoman(number - 500);
        if (number >= 400) return "CD" + ToRoman(number - 400);
        if (number >= 100) return "C" + ToRoman(number - 100);            
        if (number >= 90) return "XC" + ToRoman(number - 90);
        if (number >= 50) return "L" + ToRoman(number - 50);
        if (number >= 40) return "XL" + ToRoman(number - 40);
        if (number >= 10) return "X" + ToRoman(number - 10);
        if (number >= 9) return "IX" + ToRoman(number - 9);
        if (number >= 5) return "V" + ToRoman(number - 5);
        if (number >= 4) return "IV" + ToRoman(number - 4);
        if (number >= 1) return "I" + ToRoman(number - 1);
       	Debug.LogError("something bad happened");
		return "";
    }
}