using System;

//Professor Class

public class Professor

{

    public string strProfessorName;

    private int intage; ///MISSING PRIVATE VARIABLE

    public int intAge

    {

        get

        {

            return intage; ///UPDATED TO PRIVATE VARIABLE

        }

        set

        {

            if(value < 18 || value > 70)

            {

                intage = 30; ///UPDATED TO PRIVATE VARIABLE

            }

            else

            {

                intage = value; ///UPDATED TO PRIVATE VARIABLE

            }

        }

    }

    private string strdegree; ///MISSING PRIVATE VARIABLE

    public string strDegree

    {

        get

        {

            return strdegree; ///UPDATED TO PRIVATE VARIABLE

        }

        set

        {

            if(value.Equals("master", StringComparison.OrdinalIgnoreCase))

            {

                value = strdegree; ///UPDATED TO PRIVATE VARIABLE

            }

            else if(value.Equals("phd", StringComparison.OrdinalIgnoreCase))

            {

                value = strdegree; ///UPDATED TO PRIVATE VARIABLE

            }

            else

            {

                strdegree = "master";  ///UPDATED TO PRIVATE VARIABLE

            }

        }

    }

    public Professor()

    {

        strProfessorName = "TUNA"; ///MISSING CODE

        intAge = 30;///MISSING CODE

        strDegree = "master";///MISSING CODE

    }

}

​

//Course Class

public class Course

{

    public string strCourseName;

    private int iclasscapacity; ///MISSING PRIVATE VARIABLE

    public int iClassCapacity

    {

    get 

    {

        return iclasscapacity; ///UPDATED TO PRIVATE VARIABLE

    }

    set

    {

        if(value < 1)

        {

            iclasscapacity = 1; ///UPDATED TO PRIVATE VARIABLE

        }

        else if(value > 50)

        {

            iclasscapacity = 50; ///UPDATED TO PRIVATE VARIABLE

        }

        else 

        {

            iclasscapacity = value; ///UPDATED TO PRIVATE VARIABLE

        }

    }

    }

private string strclassid; ///MISSING PRIVATE VARIABLE

public string strClassId

{

    get

    {

        return strclassid;

    }

    set

    {

        if(value.Length != 4)

        {

            Console.WriteLine("Class ID must be 4 characters long");

            strclassid = "Null"; ///UPDATED TO PRIVATE VARIABLE

        }

        else

        {

            strclassid = value; ///UPDATED TO PRIVATE VARIABLE

        }

    }

}

    public Course()

    {

        strCourseName = "Unknown"; ///Missing code

        iClassCapacity = 1; ///Missing code

        strClassId = "XXXX"; ///Missing code

    }

}

​

public class Program

{

    public static void Main()

    {

        Professor professor1 = new Professor();

        professor1.strProfessorName = "Tuna";

        professor1.intAge = 99;

        Console.WriteLine(professor1.strProfessorName);

        Console.WriteLine(professor1.intAge);

        Course course1= new Course();

        course1.strClassId = "S308";

        course1.strCourseName = "C#";

        course1.iClassCapacity = 21;

        Console.WriteLine(course1.iClassCapacity);

        Console.WriteLine(course1.strClassId);

        Console.WriteLine(course1.strCourseName);

        //[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?

    }

}