using System;

​

​

class Talmid

    {

        private string Name;

        private Date birth;

        private int[] grades;

​

        //פעולה בונה

        public Talmid(string Name, Date birth)

        {

            this.Name = Name;

            this.birth = new Date(birth);//הפעלת הפעולה הבונה מעתיקה של המחלקה Date

            this.grades = new int[5];

        }

        public Talmid(string name)

        {

            this.Name = name;

            Console.WriteLine("enter day:");

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

            Console.WriteLine("enter month:");

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

            Console.WriteLine("enter year:");

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

            this.birth = new Date(day, month, year);

            this.grades = new int[5];

        }

        //פעולה בונה מעתיקה

        public Talmid(Talmid t)

        {

            this.Name = t.Name;

            this.birth = new Date(t.birth);

            this.grades = new int[5];

            for (int i = 0; i < grades.Length; i++)

                grades[i] = t.grades[i];

        }

        //פעולות מאחזרות

        public string GetName()

        {

            return Name;

        }

        public Date GetBirth()

        {

            // return this.birth;

            //יצרנו עצם חדש מסוג תאריך על ידי הפעלת הפעולה הבונה מעתיקה

            Date temp = new Date(this.birth);

            return temp;

        }

        public int[] GetGrades()

        {

            // return this.grades;

            int[] copy = new int[this.grades.Length];

            for (int i = 0; i < copy.Length; i++)

                copy[i] = this.grades[i];

            return copy;

        }

        //פעולות קובעות

        public void SetName(string Name)

        {

            this.Name = Name;

        }

​

        public void SetBirth(Date d)

        {

            // this.birth = d;

            //נכנס לתכונות של הפרמטר ונעתיק את התכונות ולא כתובת

            this.birth.SetDay(d.GetDay());

            this.birth.SetMonth(d.GetMonth());

            this.birth.SetYear(d.GetYear());

        }

        public void SetGrades(int[] grades)

        {

            //this.grades = grades;

            for (int i = 0; i < grades.Length; i++)

                this.grades[i] = grades[i];

        }

        public double AvgGrades()

        {

            int sum = 0;

            for (int i = 0; i < this.grades.Length; i++)

            {

                sum += this.grades[i];

            }

            return sum / this.grades.Length;

        }

        public override string ToString()

        {

            string st = "name: " + this.Name + " ,birth: " + this.birth.ToString() + "grades: ";

            for (int i = 0; i < grades.Length; i++)

                st += this.grades[i] + " ";

            return st;

        }

    }

 public class Date

    {

        //תכונות

        private int Day;

        private int Month;

        private int Year;

​

        //פעולות בונות

        public Date(int Day, int Month, int Year)

        {

            this.Day = Day;

            this.Month = Month;

            this.Year = Year;

​

        }

​

        public Date(Date d)

        {

            this.Year = d.Year;

            this.Day = d.Day;

            this.Month = d.Month;

        }

​

        //פעולות Get (מחזירות)

        public int GetDay()

        {

            return Day;

        }

​

        public int GetMonth()

        {

            return Month;

        }

​

        public int GetYear()

        {

            return Year;

        }

​

        //פעולות SET (מעדכנות)

        public void SetDay(int Day)

        {

            this.Day = Day;

        }

​

        public void SetMonth(int Month)

        {

            this.Month = Month;

        }

​

        public void SetYear(int Year)

        {

            this.Year = Year;

        }

​

        //הפעולה COMPERTO

        public int ComperTo(Date other)

        {

            if (this.Year == other.Year)

            {

                if (this.Month == other.Month)

                {

                    return (this.Day - other.Day);

                }

                else

                {

                    return (this.Month - other.Month);

                }

            }

            else

            {

                return (this.Year - other.Year);

​

            }

        }

        // הפעולה TOSTRING

        public override string ToString()

        {

            return (Day + "/" + Month + "/" + Year);

        }

​

​

    }

public class Node<T>

    {

        private T value;

        private Node<T> next;

​

        public Node(T value)

        {

            this.value = value;

            next = null;

        }

​

        public Node(T value, Node<T> next)

        {

            this.value = value;

            this.next = next;

        }

        public T GetValue()

        {

            return value;

        }

​

        public Node<T> GetNext()

        {

            return next;

        }

​

        public void SetValue(T value)

        {

            this.value = value;

        }

        public void SetNext(Node<T> next)

        {

            this.next = next;

        }

        public override string ToString()

        {

            return value.ToString();

        }

    }

  class Kita

    {

        private char level;

        private int number;

        private int numOfStudents;

        private Node<Talmid> talmidim;

//פעולה בונה שמקבלת שכבה ומספר כיתה שיוצרת כיתה ללא תלמידים

      public Kita(char level, int number)

        {

            this.level = level;

            this.number = number;

            this.numOfStudents = 0;

            this.talmidim=null;  

          }

        public Kita(char level, int number, int numOfStudents, Node<Talmid> talmidim)

        {

            this.level = level;

            this.number = number;

            this.numOfStudents = numOfStudents;

            this.talmidim=null;

            Node<Talmid> n = talmidim;

            Node<Talmid> pos = null;

            while (n != null)

            {

                if (this.talmidim == null)

                {

                    this.talmidim = new Node<Talmid>(new Talmid(talmidim.GetValue()));

                    pos = this.talmidim;

                }

                else

                {

                    pos.SetNext(new Node<Talmid>( new Talmid(n.GetValue())));

                    pos = pos.GetNext();

                }

                n = n.GetNext();

            }

        }

        public Kita()

        {

            Console.WriteLine("enter level: ");

            this.level = char.Parse(Console.ReadLine());

            Console.WriteLine("enter number: ");

            this.number = int.Parse(Console.ReadLine());

            Console.WriteLine("enter number of students: ");

            this.numOfStudents = int.Parse(Console.ReadLine());

            Node<Talmid> head = null, pos = null;

            bool flag;

            Console.WriteLine("האם להוסיף תלמיד?");

            flag = bool.Parse(Console.ReadLine());

            while (flag)

            {

                Console.WriteLine("enter name: ");

                string name = Console.ReadLine();

                Console.WriteLine("enter the day brithday: ");

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

                Console.WriteLine("enter the month brithday: ");

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

                Console.WriteLine("enter the year brithday : ");

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

                Date d = new Date(day, month, year);

                Talmid t = new Talmid(name, d);

                if (head == null)

                {

                    head = new Node<Talmid>(t);

                    pos = head;

                }

                else

                {

                    pos.SetNext(new Node<Talmid>(t));

                    pos = pos.GetNext();

                }

                Console.WriteLine("האם להוסיף תלמיד?");

                flag = bool.Parse(Console.ReadLine());

            }

        }

        public Kita(Kita k)

        {

            this.level = k.level;

            this.number = k.number;

            this.numOfStudents = k.numOfStudents;

            Node<Talmid> n = k.talmidim;

            Node<Talmid> pos = null;

            while(n != null)

            {

                if (this.talmidim == null)

                {

                    this.talmidim = new Node<Talmid>(k.talmidim.GetValue());

                    pos = this.talmidim;

                }

                else

                {

                    pos.SetNext(new Node<Talmid>(n.GetValue()));

                    pos = pos.GetNext();

                }

                n = n.GetNext();

            }

        }

​

        public char GetLevel()

        {

            return level;

        }

        public int GetNumber()

        {

            return number;

        }

        public int GetNumOfStudents()

        {

            return numOfStudents;

        }

        public Node<Talmid> GetTalmidim()

        {

            Node<Talmid> copy = null,pos = null;

            Node<Talmid> n = this.talmidim;

            while(n != null)

            {

                if (copy == null)

                {

                    copy = new Node<Talmid>(n.GetValue());

                    pos = copy;

                }

                else

                {

                    pos.SetNext(new Node<Talmid>(n.GetValue()));

                    pos = pos.GetNext();

                }

                n = n.GetNext();

            }

            return copy;

        }

​

        public void SetLevel(char level)

        {

            this.level = level;

        }

        public void SetNumber(int number)

        {

            this.number = number;

        }

        public void SetNumOfStudents(int numOfStudents)

        {

            this.numOfStudents=numOfStudent;

        }

        public void SetTalmidim(Node<Talmid> talmidim)

        {

            // this.talmidim = t;

            // אני לא בטוחה לגבי זה בגלל שזה לא מחזיר

            Node<Talmid> n = talmidim;

            this.talmidim = new Node<Talmid>(talmidim.GetValue());

            Node<Talmid> pos = this.talmidim;

            while (n != null)

            {

                pos.SetNext(new Node<Talmid>(n.GetValue()));

                pos = pos.GetNext();

                n = n.GetNext();

            }

        }

      // אותו לתחילת הרשימהפעולה המקבלת תלמיד ומוסיפה 

      public void AddStu(Talmid t)

      {

        this.talmidim= new Node<Talmid>(t,this.talmidim);

          this.numOfStudents++;

      }

              public override string ToString()

        {

            string s = "level: " + level + ",number: " + number + "numOfStudents: " + numOfStudents + ",talmidim: ";

            Node<Talmid> pos = this.talmidim;

            while (pos != null)

            {

                pos.GetValue().ToString();

                pos = pos.GetNext();

            }

            return s;

        }

    }

​

 class Program

{

    public static void Add(Kita k, Talmid t)

    {

        k.SetTalmidim(new Node<Talmid>(t,k.GetTalmidim()));

    }

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}