using System;

​

public class Program

{

    public static void Main()

    {

        Person person1 = new Person();

        Person person2 = new Person(123, "esm", "famili");

        Person person3 = new Person(0123456789, "fateme", "bayat", false, new DateTime(2002, 06, 11), 987654321, "lorestan-azna");

        person3.Display();

        Console.WriteLine(person3.Age());

        person3.Update("iran");

        Console.WriteLine(person3.address);

        Course course1 = new Course();

        Course course2 = new Course(1, "shimi");

        Course course3 = new Course(2, "riyazi", 2);

        course3.Display();

    }

​

    public class Person

    {

        public int shomareMelli;

        public string name;

        public string lastName;

        public bool gender;

        public DateTime birthDate;

        public int phoneNumber;

        public string address;

        public Person()

        {

            this.shomareMelli = 1111111111;

        }

​

        public Person(int shomareMelli, string name, string lastName)

        {

            this.shomareMelli = shomareMelli;

            this.name = name;

            this.lastName = lastName;

        }

​

        public Person(int shomareMelli, string name, string lastName, bool gender, DateTime birthDate, int phoneNumber, string address)

        {

            this.shomareMelli = shomareMelli;

            this.name = name;

            this.lastName = lastName;

            this.gender = gender;

            this.birthDate = birthDate;

            this.phoneNumber = phoneNumber;

            this.address = address;

        }

​

        public void Display()

        {

            string genderString;

            if (gender)

                genderString = "male";

            else

                genderString = "female";

            Console.WriteLine("esm:" + name + " " + lastName);

            Console.WriteLine("gensiyat:" + genderString);

            Console.WriteLine("tarikh tavalod:" + birthDate.Date.ToString());

            Console.WriteLine("shomare melli:" + shomareMelli.ToString());

            Console.WriteLine("shomare mobile:" + phoneNumber.ToString());

            Console.WriteLine("adres:" + address);          

        }

​

        public int Age()

        {

            return DateTime.Today.Year - birthDate.Year;

        }

​

        public void Update(int phoneNumber)

        {

            this.phoneNumber = phoneNumber;

        }

​

        public void Update(string address)

        {

            this.address = address;

        }

​

        public void Update(int phoneNumber, string address)

        {

            this.phoneNumber = phoneNumber;

            this.address = address;

        }

    }

​

    public class Course

    {

        public int id;

        public string name;

        public float credits;

        public string description;

        public Course()

        {

            this.id = 111111;

        }

​

        public Course(int id, string name)

        {

            this.id = id;

            this.name = name;

        }

​

        public Course(int id, string name, float credits)

        {

            this.id = id;

            this.name = name;

            this.credits = credits;

        }

​

        public void Display()

        {

            Console.WriteLine("esm dars:" + name);

            Console.WriteLine("shomare dars:" + id.ToString());

            Console.WriteLine("tedad vahed:" + credits);

        }

    }

}