using System;

//Professor Class

public class Professor

{

    // [Code] Define Fields

    public string ProfessorName;

    // [Code] Define Property Age

    private int _Age;

    public int Age

    {

        get{return _Age;}

        set

        {

            if (value < 18 || value > 70) _Age = 30;

            else _Age = value;

        }

    }

    // Make sure Age is between 18 and 70

    // If Age violates the rule, set the default value as 30

​

    // [Code] Define Property Degree

    // The degree's value should only equal to "master" or "phd".

    private string _Degree;

    public string Degree

    {

        get{return _Degree;}

        set

        {

            if (value == "master" || value == "phd") _Degree = value;

            else _Degree = "master";

        }

    }

    // [Code] Constructor

    public Professor()

    {

    }

}

​

//Course Class

public class Course

{

    // [Code] Define Fields

    public string CouseName;

    // [Code] Properties CourseID

    // Make sure CourseID has exactly 4 characters

    private string _CourseID;

    public string CourseID

    {

        get{return _CourseID;}

        set

        {

            if(value.Length == 4) _CourseID = value;

            else

            {

                Console.WriteLine("Given {0} is not set as CourseID. It must be 4 characters long.", value);

            }

        }

    }

​

    // [Code] Properties ClassLimit

    // Make sure ClassLimit is under 50

    private int _ClassLimit;

    public int ClassLimit

    {

        get{return _ClassLimit;}

        set

        {

            if(value < 1) _ClassLimit = 1;

            else if (value > 50) _ClassLimit = 50;

            else _ClassLimit = value;

        }

    }

    // [Code] Constructor

    public Course()

    {

    }

}

​

public class Program

{

    public static void Main()

    {

        Professor p1 = new Professor();

        Professor p2 = new Professor();

        p1.ProfessorName = "Esen";

        p1.Age = 99;

        p1.Degree = "bs";

        Console.WriteLine("Name is "+ p1.ProfessorName);

        Console.WriteLine("Age is "+ p1.Age);

        Console.WriteLine("Degree is "+ p1.Degree);

        Course C1 = new Course();

        Course C2 = new Course();

        C1.CouseName = "C#";

        C1.CourseID = "S308";

        C1.ClassLimit = 21;

        C2.CouseName = "Tech & Business Analysis";

        C2.CourseID = "K303";

        C2.ClassLimit = 0;

        Console.WriteLine("{0}: {1} ({2})", C1.CourseID,C1.CouseName, C1.ClassLimit);

        //Console.WriteLine("{0}: {1} ({2})", C2.CourseID,C2.CouseName, C2.ClassLimit);

        //[Code] Create an object ProfessorTuna

        // ProfessorName: Tuna

        // Age: 99

​

        //[Code] Create an object CourseS308

        // CourseID: S308

        // CourseName: C#

        // ClassCapacity: 21

​

        // [Code] Show professor's age and course capacity

        // What happens if the age is greater than 70?

    }

}