using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        bool correctName = false;

        string firstName = String.Empty;

        string lastName = String.Empty;

        int year1 = 0;

        string month1 = String.Empty;

        int day1 = 0;

        while (correctName == false)

        {

            Console.WriteLine("Please enter your first name:");

            firstName = Console.ReadLine();

            Console.WriteLine("Please enter your last name:");

            lastName = Console.ReadLine();

            if (firstName != null && lastName != null)

            {

                correctName = true;

                //Jahr festlegen

                bool correctYear1 = false;

                while (correctYear1 == false)

                {

                    Console.WriteLine("Please enter year of birth 1");

                    year1 = Int32.Parse(Console.ReadLine());

                    if (year1 != 0)

                    {

                        correctYear1 = true;

                        int febdays = 0;

                        if (year1 % 4 == 0)

                            febdays = 29;

                        else

                            febdays = 28;

                        //Monate erzeugen

                        Month jan = new Month("jan", 31);

                        Month feb = new Month("feb", febdays);

                        Month mar = new Month("mar", 31);

                        Month apr = new Month("apr", 30);

                        Month may = new Month("may", 31);

                        Month jun = new Month("jun", 30);

                        Month jul = new Month("jul", 31);

                        Month aug = new Month("aug", 31);

                        Month sep = new Month("sep", 30);

                        Month oct = new Month("oct", 31);

                        Month nov = new Month("nov", 30);

                        Month dec = new Month("dec", 31);

                        //Liste erzeugen und befüllen

                        List<Month> monthList = new List<Month>();

                        monthList.Add(jan);

                        monthList.Add(feb);

                        monthList.Add(mar);

                        monthList.Add(apr);

                        monthList.Add(may);

                        monthList.Add(jun);

                        monthList.Add(jul);

                        monthList.Add(aug);

                        monthList.Add(sep);

                        monthList.Add(oct);

                        monthList.Add(nov);

                        monthList.Add(dec);

                        //Geburtstag der ersten Person

                        bool correctMonth1 = false;

                        while (correctMonth1 == false)

                        {

                            Console.WriteLine("Enter birthdaymonth 1");

                            month1 = Console.ReadLine();

                            var match1 = monthList.FirstOrDefault(x => x.GetName() == month1);

                            if (match1 != null)

                            {

                                Console.WriteLine(match1.GetLength());

                                correctMonth1 = true;

                                bool correctDay1 = false;

                                while (correctDay1 == false)

                                {

                                    Console.WriteLine("Enter day of birth 1 in " + month1);

                                    day1 = Int32.Parse(Console.ReadLine());

                                    if (day1 >= 1 && day1 <= match1.GetLength())

                                    {

                                        Console.WriteLine("passt");

                                        correctDay1 = true;

                                    }

                                    else

                                    {

                                        Console.WriteLine("wrong day");

                                        correctDay1 = false;

                                    }

                                }

                            }

                            else

                            {

                                Console.WriteLine("please enter a correct month");

                                correctMonth1 = false;

                            }

                        }

                    }

                    else

                    {

                        Console.WriteLine("wrong year");

                        correctYear1 = false;

                    }

                }

            }

​

            Person person1 = new Person(firstName, lastName, year1, month1, day1);

            else

            {

                Console.WriteLine("Please enter a name");

                correctName = false;

            }

        }

    }

    //Geburtstag der zweiten Person

    /*Console.WriteLine("Enter birthdaymonth 2");

        string month2 = Console.ReadLine();

        var match2 = monthList.FirstOrDefault(x => x.GetName() == month2);

        if(match2 != null)

            Console.WriteLine(match2.GetLength());

        else

            Console.WriteLine("please enter a correct month");

        Console.WriteLine("Enter birthday 1");

        int day1 = Int32.Parse(Console.ReadLine());

        Console.WriteLine("Enter birthday 2");

        int day2 = Int32.Parse(Console.ReadLine());*/

    }

}

​

public class Month

{

    private string name;

    private int days;

    public Month(string n, int d)

    {

        name = n;

        days = d;

    }

​

    public int GetLength()

    {

        return days;

    }

​

    public string GetName()

    {

        return name;

    }

}

​

public class Person

{

    private string firstName;

    private string lastName;

    private int yearOfBirth;

    private string monthOfBirth;

    private int dayOfBirth;

    public Person(string fn, string ln, int y, string m, int d)

    {

        firstName = fn;

        lastName = ln;

        yearOfBirth = y;

        monthOfBirth = m;

        dayOfBirth = d;

    }

​

    public string GetName()

    {

        return firstName + " " + lastName;

    }

​

    public string GetBirthDate()

    {

        return dayOfBirth + "." + monthOfBirth + "." + yearOfBirth;

    }

}