using System;

public class Program

{

    public static void Main()

    {

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            string result = "";

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            while (result != "1" && result != "2")

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            {

                Console.WriteLine("Are you allowed to drink alcohol?");

                Console.WriteLine(" ");

                Console.WriteLine("What country are you currently in?");

                string country = Console.ReadLine();

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                if (country == "UK" || 

                    country == "United Kingdom" || 

                    country == "England" || 

                    country == "Scotland")

                {

                    eighteenAge();

                    Console.ReadLine();

                    Environment.Exit(0);

                }

​

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                else if (country == "Canada")

                {

                    nineteenAge();

                    Console.ReadLine();

                    Environment.Exit(0);

                }

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                else if (country == "USA")

                {

                    twentyoneAge();

                    Console.ReadLine();

                    Environment.Exit(0);

                }

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                else if (country == "Sweden" ||

                    country == "France" ||

                    country == "Belgium" ||

                    country == "Denmark")

                {

                    zeroAge();

                    Console.ReadLine();

                    Environment.Exit(0);

                }

​

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                else if (country == "Iran" ||

                    country == "Afghanistan" ||

                    country == "Pakistan")

                {

                    illegalCountry();

                    Console.ReadLine();

                    Environment.Exit(0);

                }

​

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                else if (country == "Bangladesh")

                {

                    muslimCountry();

                    Console.ReadLine();

                    Environment.Exit(0);

                }

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                else

                {

                    Console.WriteLine(" ");

                    Console.WriteLine("Sorry, try typing the country another way.");

                    Console.WriteLine("Eg. try 'UK' instead of 'United Kingdom'.");

                    Console.WriteLine("And use capital letters.");

                    Console.WriteLine(" ");

​

                }

            }

    }

​

           private static void nineteenAge()

        {

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            Console.WriteLine(" ");

            Console.WriteLine("How old are you? ");

            string age = (Console.ReadLine());

            int x;

            if (int.TryParse(age, out x))

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                if (x >= 19)

                {

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                    yesResponse();

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                }

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                else if (x <= 18)

                {

                    noResponse();

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                }

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        }

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        private static void eighteenAge()

        {

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            Console.WriteLine(" ");

            Console.WriteLine("How old are you? ");

            string age = (Console.ReadLine());

            int x;

            if (int.TryParse(age, out x))

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                if (x >= 18)

                {

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                    yesResponse();

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                }

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                else if (x <= 17)

                {

                    noResponse();

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                }

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        }

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        private static void twentyoneAge()

        {

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            Console.WriteLine(" ");

            Console.WriteLine("How old are you? ");

            string age = (Console.ReadLine());

            int x;

            if (int.TryParse(age, out x))

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                if (x >= 21)

                {

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                    yesResponse();

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                }

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                else if (x <= 20)

                {

                    noResponse();

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                }

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        }

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       private static void zeroAge()

        {

            Console.WriteLine(" ");

            Console.WriteLine("Go ahead: There is no minimum drinking age in this country.");

        }

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        private static void muslimCountry()

        {

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            Console.WriteLine(" ");

            Console.WriteLine("Are you a Muslim? 'Yes' or 'No'.");

            string muslim = (Console.ReadLine());

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                if (muslim == "Yes")

                {

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                    noResponse();

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                }

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                else if (muslim == "No")

                {

                    yesResponse();

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                }

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        }

​

​

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        private static void illegalCountry()

        {

            Console.WriteLine(" ");

            Console.WriteLine("Alcohol is illegal here.");

            Console.WriteLine("Leave this country immediately.");

        }

​

​

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        private static void yesResponse()

        {

            Console.WriteLine(" ");

            Console.WriteLine("You can legally drink alcohol.");

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        }

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        private static void noResponse()

        {

            Console.WriteLine(" ");

            Console.WriteLine("You cannot legally drink alcohol.");

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        }

​

    }