using System;

public class Program

{

    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;

​

        }

        //פעולה בונה מעתיקה

        public Date(Date d)

        {

            this.Year = d.Year;

            this.Day = d.Day;

            this.Month = d.Month;

        }

        //פעולה בונה הקולטת ערכים מהמשתמש

        public Date()

        {

            Console.WriteLine("enter day:");

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

            Console.WriteLine("enter month:");

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

            Console.WriteLine("enter year:");

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

        }

        //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()

        {

            string r = "-----------" + "\n day: " + this.Day + "\n month: " + this.Month + "\n month: "+this.Year;

            return r;

        }

​

    }

     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];

        }

        //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 GetAvg(int [] grades)

        {

            int sum = 0;

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

            {

                sum += this.grades[i];

            }

            return (double)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;

        }

    }

    class Kita

    {

        private char level;

        private int class_number;

        private int num_of_students;

        private Talmid[] talmidim;

​

public Kita(char level, int class_number, int num_of_students, Talmid[] talmidim)

        {

            this.level = level;

            this.class_number = class_number;

            this.num_of_students = num_of_students;

            this.talmidim = new Talmid[20];

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

            {

                this.talmidim[i] = talmidim[i];

            }

        }

        public Kita(char level, int class_number)

        {

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

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

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

            {

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

                string name = Console.ReadLine();

                Console.WriteLine("enter your birth date:");

                Date birth_date = new Date();

                this.talmidim[i] = new Talmid(name, birth_date);

            }

        }

        public Kita()

        {

            Console.WriteLine("enter level:");

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

            Console.WriteLine("enter class number:");

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

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

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

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

            {

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

                string name = Console.ReadLine();

                Console.WriteLine("enter your birth date:");

                Date birth_date = new Date();

                this.talmidim[i] = new Talmid(name, birth_date);

            }

        }

        public Kita(Kita k)

        {

            this.level = k.level;

            this.class_number = k.class_number;

            this.num_of_students = k.num_of_students;

            for (int i = 0; i < k.num_of_students; i++)

            {

                this.talmidim[i] = k.talmidim[i];

            }

        }

        public char GetLevel()

        {

            return this.level;

        }

        public int GetClassNumber()

        {

            return this.class_number;

        }

        public int GetNumOfStudents()

        {

            return this.num_of_students;

        }

        public Talmid[] GetTalmidim()

        {

            Talmid[] copy = new Talmid[this.num_of_students];

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

            {

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

            }

            return copy;

        }

        public void SetLevel(char level)

        {

            this.level = level;

        }

        public void SetClassNumber(int class_number)

        {

            this.class_number = class_number;

        }

        public void SetNumOfStudents(int num_of_students)

        {

            this.num_of_students = num_of_students;

        }

        public void SetTalmidim(Talmid[] talmidim)

        {

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

            {

                this.talmidim[i] = talmidim[i];

            }

        }

        public Talmid BestStudent()

        {

            int max_place=0;

            double max_avg = 0;

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

            {

             if (this.talmidim[i].GetAvg(this.talmidim[i].GetGrades())>max_avg)

                {

               max_avg = this.talmidim[i].GetAvg(this.talmidim[i].GetGrades());

                    max_place = i;

                }

            }

            return this.talmidim[max_place];

        }

        public bool IsStudentInClas(Talmid st)

        {

​

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

            {

                if (st.GetName() == this.talmidim[i].GetName())

                {

                    return true;

                }

            }

            return false;

        }

        public bool AddStudent(Talmid stu)

        {

            if (this.num_of_students ==20)

            {

                return false;

            }

            else

            {

                this.talmidim[num_of_students] = stu;

                this.num_of_students++;

            }

            return true;

        }

        public override string ToString()

        {

   string s = "level: " + level + "number: " + class_number + "numOfStudents: " + num_of_students + "talmidim: ";

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

            {

                s += this.talmidim[i].ToString() + "  ";

            }

            return s;

        }

    }

​

    public static void Main()

    {

        //סעיף 1:

            Kita class1 = new Kita();

            Kita class2 = new Kita('7', 2);

            //סעיף 2:

            Console.WriteLine(class1.ToString());

            Console.WriteLine(class2.ToString());

            //סעיף 3:

Console.WriteLine("there is" +class1.GetNumOfStudents()+" students in class 1");

Console.WriteLine("there is" + class2.GetNumOfStudents() + " students in class 2");

            //סעיף 4:

​

            //בניית שלושת התלמידים שנרצה להוסיף לכיתה-עשיתי 3 אותו הדבר:

            int day = 10;

            int month = 9;

            int year = 2003;

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

            string name = "tal";

            Talmid t1 = new Talmid(name, birth_date);

            Talmid t2 = new Talmid(name, birth_date);

            Talmid t3 = new Talmid(name, birth_date);

​

            if (class1.GetNumOfStudents() <= 16)

            {

                class1.AddStudent(t1);

                class1.AddStudent(t2);

                class1.AddStudent(t3);

                Console.WriteLine(class1.ToString());

            }

            else

            {

                class2.AddStudent(t1);

                class2.AddStudent(t2);

                class2.AddStudent(t3);

                Console.WriteLine(class2.ToString());            

             }

            //סעיף 5:

            Console.WriteLine(class1.BestStudent().ToString());

            Console.WriteLine(class2.BestStudent().ToString());

​

            //סעיף 6:

            Console.WriteLine("enter your name");

            t1.SetName(Console.ReadLine());

            if (class1.IsStudentInClas(t1)==true)

            {

                Console.WriteLine("student in class");

            }

            else

            {

                Console.WriteLine("student is not in class");

            }

            //סעיף 7:

            int count = 0;

            for (int i = 0; i < class1.GetNumOfStudents(); i++)

            {

                if (class1.GetTalmidim()[i].GetName().IndexOf("לוי " )>0)

                {

                    count++;

                }

            }

            Console.WriteLine("there are"+count+" students with the name לוי");

            count = 0;

            for (int i = 0; i < class1.GetNumOfStudents(); i++)

            {

                if (class1.GetTalmidim()[i].GetName().IndexOf("כהן ") > 0)

                {

                    count++;

                }

            }

         Console.WriteLine("there are" + count + " students with the name כהן");

​

            //סעיף 8:

            count = 0;

            for (int i = 0; i < class1.GetNumOfStudents(); i++)

            {

    if (class1.GetTalmidim()[i].GetAvg(class1.GetTalmidim()[i].GetGrades())<55)

                {

                    count++;

                }

            }

            Console.WriteLine("יש"+count+"תלמידים עם ממוצע נכשל בכיתב");

​

            //סעיף 9:                                                             

        if(class1.BestStudent().GetAvg(class1.BestStudent().GetGrades())>class2.BestStudent ().GetAvg(class2.BestStudent().GetGrades()))

            {

​

                Console.WriteLine(class1.BestStudent().ToString());

            }

            else

            {

                Console.WriteLine(class2.BestStudent().ToString());

            }

​

            //סעיף 10:

            count = 0;

            for (int i = 0; i < class1.GetNumOfStudents(); i++)

            {

  if (class1.GetTalmidim()[i].GetAvg(class1.GetTalmidim()[i].GetGrades()) >85 )

                {

                    count++;

                }

            }

            for (int i = 0; i < class2.GetNumOfStudents(); i++)

            {

  if (class2.GetTalmidim()[i].GetAvg(class2.GetTalmidim()[i].GetGrades()) > 85)

                {

                    count++;

                }

            }

            Console.WriteLine("יש "+count+" תלמידים עם ממוצע מעל 85");

​

            Console.ReadKey();

        }

    }       

​

​