using System;

public class Program

{

    public static void Main()

    {

            Console.WriteLine("Pick one: heads or tails");

    string userCallEntered = Console.ReadLine();

    int userCall = 0;

    if(userCallEntered == "heads")

    {

        userCall = 1;

    }

    else

    {

        userCall = 2;

    }

    Random randomGenerator = new Random();

    int coinTossResult = randomGenerator.Next(1,3);

    if(coinTossResult == 1)

    {

        Console.WriteLine("It was heads!");

    }

    else

    {

        Console.WriteLine("It was tails!");

    }

    if(userCall == coinTossResult)

    {

        Console.WriteLine("You won!");

    }

    else

    {

        Console.WriteLine("You lost...");

    }

}

    }

​