using System;

namespace ProxyPattern
{
  class Program
  {
    static void Main(string[] args)
    {
      Console.WriteLine("Enter your number: ");
      int number = int.Parse(Console.ReadLine());
      IConverter proxy = new ConverterProxy();

      Console.WriteLine($"Decimal: {number}");
      Console.WriteLine($"Binary: {proxy.ConvertToBinary(number)}");
      Console.WriteLine($"Octal: {proxy.ConvertToOctal(number)}");
      Console.WriteLine($"Hex: {proxy.ConvertToHex(number)}");

    }
  }

interface IConverter
    {
    string ConvertToBinary(int number);

    string ConvertToHex(int number);

    string ConvertToOctal(int number);
    }

class ConverterProxy : IConverter
  {
    private readonly IConverter converter;

    public ConverterProxy()
    {
      converter = new Converter();
    }

    public string ConvertToBinary(int number)
    {
      return converter.ConvertToBinary(number);
    }

    public string ConvertToHex(int number)
    {
      return converter.ConvertToHex(number);
    }

    public string ConvertToOctal(int number)
    {
      return converter.ConvertToOctal(number);
    }
  }

class Converter : IConverter
  {
    public string ConvertToBinary(int number)
    {
      return Convert.ToString(number, 2);
    }

    public string ConvertToHex(int number)
    {
      return Convert.ToString(number, 16);
    }

    public string ConvertToOctal(int number)
    {
      return Convert.ToString(number, 8);
    }
  }
}