using System;

​

public interface ITradingBot

{

    void Connect();

    void PlaceOrder(string symbol, double volume);

    void Disconnect();

}

​

public class ForexBot : ITradingBot

{

    public void Connect() => Console.WriteLine("Connected to Forex Broker.");

    public void PlaceOrder(string symbol, double volume) => Console.WriteLine($"Forex Order: {symbol} - {volume} lots.");

    public void Disconnect() => Console.WriteLine("Disconnected from Forex Broker.");

}

​

public class CryptoBot : ITradingBot

{

    public void Connect() => Console.WriteLine("Connected to Crypto Exchange.");

    public void PlaceOrder(string symbol, double volume) => Console.WriteLine($"Crypto Order: {symbol} - {volume} coins.");

    public void Disconnect() => Console.WriteLine("Disconnected from Crypto Exchange.");

}

​

class Program

{

    static void Main()

    {

        ITradingBot bot = new ForexBot();

        bot.Connect();

        bot.PlaceOrder("EURUSD", 1.5);

        bot.Disconnect();

​

        bot = new CryptoBot();

        bot.Connect();

        bot.PlaceOrder("BTCUSD", 0.2);

        bot.Disconnect();

    }

}

​

​