using System;

public class Program

{

    public static void Main()

    {

        int input = 0;

        string FirstName;

        string LastName;

        int age;

        while (input != 4)

        {

            Console.WriteLine("*********************************************");

            Console.WriteLine("** Enter number to run desired program.");

            Console.WriteLine("** 1. Run Age Program.");

            Console.WriteLine("** 2. Run 99 Bottles Program.");

            Console.WriteLine("** 3. Divide 100 by 3.");

            Console.WriteLine("** 4. Exit the menu.");

            Console.WriteLine("*********************************************");

            string result = Console.ReadLine();

            input = int.Parse(result);

            if (input == 1)

            {

                Console.WriteLine("What is your first name: ");

                FirstName = Console.ReadLine();

                Console.WriteLine("What is your last name: ");

                LastName = Console.ReadLine();

                Console.WriteLine("Welcome " + FirstName + " " + LastName + ", What is your age: ");

                age = int.Parse(Console.ReadLine());

                if (age <16)

                {

                    Console.WriteLine("You are not old enough to legally drive or drink.");

                }

                else if (age <21)

                {

                    Console.WriteLine("You can legally drive with a license. You are not old enough to drink.");

                }

                else

                {

                    Console.WriteLine("You can legally drive with a license. You are old enough to drink as well.");

                }

                Console.WriteLine("Do you live in Colorado: ");

                string answer = Console.ReadLine();

                if (answer[0].ToString().ToLower() == "y" && age >18)

                {

                    Console.WriteLine("You are over the legal age. You can smoke marijuana legally.");

                }

                else if (answer[0].ToString().ToLower() == "y" && age <18)

                {

                    Console.WriteLine("You are under the legal age. Once 18 you can smoke marijuana legally.");

                }

                else if (answer[0].ToString().ToLower() == "n" && age >18)

                {

                    Console.WriteLine("You are over the legal age. You cannot smoke marijuana legally in your state.");

                }

                else

                {

                    Console.WriteLine("You are under the legal age. You cannot smoke marijuana legally in your state.");

                }

                Console.WriteLine();

            }

            else if (input == 2)

            {

                for (int i = 99; i >= 1; i--)

                {

                    if (i != 1)

                    {

                        Console.WriteLine(i + " Bottles of beer on the wall.");

                        Console.WriteLine(i + " Bottles of beer.");

                        Console.WriteLine("Take one down pass it around " + (i-1) + " bottles of beer on the wall.");

                        Console.WriteLine();

                    }

                    else 

                    {

                        Console.WriteLine("1" + " Bottle of beer on the wall.");

                        Console.WriteLine("1" + " Bottle of beer.");

                        Console.WriteLine("Take one down pass it around " + "0" + " bottles of beer on the wall.");

                        Console.WriteLine();

                    }

                }

            }

            else if (input == 3)

            {

                Console.WriteLine();

                Console.WriteLine("100 / 3 = 33.33333333333333333333333333333333333333333333333333333333333333333333333333");

                Console.WriteLine();

            }

            else if (input == 4)

            {

                Console.WriteLine();

                Console.WriteLine("GOODBYE!");

            }

        }

    }

}