using System;

​

// Page 79

​

class Student{

    public static int studentCount;

    public string firstName;

    public string lastName;

    public string grade;

}

​

public class Program

{

    public static void Main()

    {

        Student firstStudent = new Student();

        Student.studentCount++;

        Student secondStudent = new Student();

        Student.studentCount++;

        firstStudent.firstName = "Diarmaid";

        firstStudent.lastName = "McGleenan";

        firstStudent.grade = "six";

​

        secondStudent.firstName = "Erin";

        secondStudent.lastName = "McGleenan";

        secondStudent.grade = "ten";

        Console.WriteLine(firstStudent.firstName);

        Console.WriteLine(secondStudent.firstName);

        Console.WriteLine(Student.studentCount);

    }

}