static void Main(string[] args) { RomanNumeralToTextConverter Converter = new RomanNumeralToTextConverter(); Console.WriteLine("Please enter your value in RomanNumerals"); var input = Console.In.ReadLine(); var romanString = input.ToUpper(); if (Converter.IsStringValidRomanNumeralInput(romanString)) { Console.WriteLine("This is your converted value: " + Converter.CalculateTotalRomanNumeralNumber(romanString)); } else { Console.WriteLine("Sorry your input was invalid, we are exiting now"); } }