using System;

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {
            //1
            Console.WriteLine(1);
            var person = new Person("Дима", "Ефремов", 22);
            var p1 = person;
            var p2 = person;
            Console.WriteLine(p1);
            Console.WriteLine(p2);
            Mhetod(p1);
            Console.WriteLine(p1);
            Console.WriteLine(p2);
            Mhetod2(ref p1);
            Console.WriteLine(p1);
            Console.WriteLine(p2);
            //2
            Console.WriteLine(2);
            Mhetod3(out Person person3);
            Console.WriteLine(person3);
            //3-

            //4
            Console.WriteLine(4);
            Mhetod5(1, 2);
            Mhetod5(1, 2, 3, 4);
            Mhetod5(1, 2, d: 10);
            Mhetod5(1, 2, d: 10, c: 15);

            //6
            Console.WriteLine(6);
            string userType = UserType.Friend.ToString();
            Console.WriteLine(userType);
            Console.WriteLine((byte)Mhetod6(userType));

            //8
            Console.WriteLine(8);
            UserType userTypes = UserType.Friend | UserType.Admin | UserType.Owner;

            //9
            Console.WriteLine(9);
            Mhetod9(userTypes, UserType.Annonim);
            //10
            Console.WriteLine(10);
            var personn = new Personn("a", "b", 15, null);
            Personn a = personn;
            Personn b = personn;
            Console.WriteLine(a);
            Console.WriteLine(b);
            a.Age = 10;
            Console.WriteLine(a);
            Console.WriteLine(b);
            //11
            Console.WriteLine(11);
            Mhetod11(a);
            Console.WriteLine(a);
            //12
            var person12 = new Personn("a", "b", 15, new Person("Dima", "Drim3", 10));
            Console.WriteLine(12);
            var pDeepCopy = person12.DeepCopy();
            Console.WriteLine(pDeepCopy);
            var pCopy = person12.Copy();
            Console.WriteLine(pCopy);

            person12.Person.Age = 15;
            Console.WriteLine("deep:" + pDeepCopy);
            Console.WriteLine("copy" + pCopy);
        }
        //1
        static void Mhetod(Person person)
        {
            person.FirstName = "1";
        }
        //1
        static void Mhetod2(ref Person person)
        {
            person = new Person("2", person.LastName, person.Age);
        }
        //2
        static void Mhetod3(out Person person)
        {
            person = new Person("Данил", "Данилов", 15);
        }
        //4
        static void Mhetod5(int a, int b, int c = 5, int d = 6)
        {
            Console.WriteLine($"{a} {b} {c} {d}");
        }
        //6
        static UserType Mhetod6(string userType)
        {
            return (UserType)Enum.Parse(typeof(UserType), userType);
        }

        //9
        static void Mhetod9(UserType userType, UserType check)
        {
            Console.WriteLine($"{check}? {(userType | check) == check}");
        }
        //11
        static void Mhetod11(Personn personn)
        {
            personn.Age = 10111;
        }

    }
    //7
    [Flags]
    //5
    public enum UserType : byte
    {
        Owner = 1,
        Admin = 2,
        Friend = 3,
        Annonim = 4,
    }

    public class Person
    {
        public string FirstName;
        public string LastName;
        public int Age;

        public Person(string firstName, string lastName, int age)
        {
            FirstName = firstName;
            LastName = lastName;
            Age = age;
        }

        public override string ToString()
        {
            return "FirstName:" + FirstName + "\n" +
                "LastName:" + LastName + "\n" +
                "Age:" + Age + "\n";
        }
    }


    public struct Personn
    {
        public string FirstName;
        public string LastName;
        public int Age;
        public Person Person;

        public Personn(string firstName, string lastName, int age, Person person)
        {
            FirstName = firstName;
            LastName = lastName;
            Age = age;
            Person = person;
        }

        public Personn Copy()
        {
            return (Personn)this.MemberwiseClone();
        }
        public Personn DeepCopy()
        {
            Person newPerson = new Person(Person.FirstName, Person.LastName, Person.Age);
            return new Personn(FirstName, LastName, Age, newPerson);
        }

        public override string ToString()
        {
            return "FirstName:" + FirstName + "\n" +
                "LastName:" + LastName + "\n" +
                "Age:" + Age + "\n" +
                "Person" + Person + "\n";
        }
    }
}