using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Welcome to Game 21");

        Random rG = new Random();

        Console.WriteLine(" ");

        Console.WriteLine("How many cards do you want to be dealt (2-4)?");

​

        double Cards = Convert.ToDouble(Console.ReadLine());

​

        double score;

        double Comscore;

        int num1=0;

        int num2=0;

        int num3=0;

        int num4=0;

        if (Cards==4)

        {   

            num1 = rG.Next(2,12);

            num2 = rG.Next(2,12);

            num3 = rG.Next(2,12);

            num4 = rG.Next(2,12);

            Console.WriteLine("Your First Card: " + num1);

            Console.WriteLine("Your Second Card: " + num2);

            Console.WriteLine("Your Third Card: " + num3);

            Console.WriteLine("Your Forth Card: " + num4);

            score = num1+num2+num3+num4;

            Console.WriteLine("Your Score: " + score);

        }

​

        else if (Cards==3)

        {   

            num1 = rG.Next(2,12);

            num2 = rG.Next(2,12);

            num3 = rG.Next(2,12);

            Console.WriteLine("Your First Card: " + num1);

            Console.WriteLine("Your Second Card: " + num2);

            Console.WriteLine("Your Third Card: " + num3);

            score = num1+num2+num3;

            Console.WriteLine("Your Score: " + score);

        }

        else if (Cards==2)

        {   

            num1 = rG.Next(2,12);

            num2 = rG.Next(2,12);

            Console.WriteLine("Your First Card: " + num1);

            Console.WriteLine("Your Second Card: " + num2);

            score = num1+num2;

            Console.WriteLine("Your Score: " + score);

        }

        else

        {

            Console.WriteLine("Not Allowed");

            score = 0;

        }

        Console.WriteLine("");

            int com1 = rG.Next(1,11);

            Console.WriteLine("Computers First Card: " + com1);

            int com2 = rG.Next(1,11);

            Console.WriteLine("Computers Second Card: " + com2);

            int com3 = rG.Next(1,11);

            Console.WriteLine("Computers Third Card: " + com3);

            Comscore = com1+com2+com3;

            Console.WriteLine("Computers Score: " + Comscore);

        if (score>21 && (num1==11||num2==11||num3==11||num4==11))

            {

                if (num1==11)

                num1=1;

                else if (num2==11)

                num2=1;

                else if (num3==11)

                num3=1;

                else if (num4==11)

                num4=1;

            }

        if (score==0)

            Console.WriteLine("Invalid");

        else if (score>Comscore && score<=21||score<=21 && Comscore>21)

            Console.WriteLine("You Win");

        else if(score<Comscore&&Comscore<=21||score>21 && Comscore<=21)

            Console.WriteLine("You Lose");

        else

            Console.WriteLine("Its a Draw");

​

    }

}