class Program

{

     static void Main( string[]args)

    {

        Student  s1= new Student("Ruba,Madinah",2020);

        Student s2= new Student("Sara,Dubai",2020);

        s2.changeddress("Med");

    Console.WriteLine(s1.getData());

    Console.writeLine(s2.getData());     

    Console.Read();  

    }

}

        class Student

 {  

​

//خصائص

private string name;

private string address;

private int year;         

//دالة البناء

public Student(string n, string a, int y)

{

    name = n;

    address = a;

    year = y ;

}                 

//دوال

public void changeaddress(string newAddress)

{

    address = newAddress;

}

public string getData()

{

    return name + " " + address + " "+ year;

}

                  }

​