using System;

​

//Professor Class

public class Professor

{

    //[Code] Define Fields

    public string ProfessorName;

​

    //[Code] Define Property Age

    //Make sure Age is between 18 and 70

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

    private int _iAge;

    public int iAge

    {

        get

        {return _iAge;

        }

        set

        {

            if(value >= 18 && value <=70)

                _iAge = value;

            else

            {

                _iAge = 30;

            }

        }

    }

    //[Code] Define Property Degree

    //Make sure Degree has at least three letters

    //If Degree violates the rule, set the defaul value as "Master"

        private string _strDegree;

        public string strDegree

        {

            get

            {return _strDegree;

            }

            set

            {

                if(value.Length >= 3)

                _strDegree = value;

                else

                {

                    _strDegree = "Master";

                }

            }

        }

​

    //[Code] Constructor

}

​

public class Program

{

    public static void Main()

    {

        //[Code] Create object ProfessorLiu

        // ProfessorName: Liu

        // Age: 99

        // Degree: PhD

        Professor Professor1 = new Professor();

        Professor1.ProfessorName = "Liu";

        Professor1.iAge = 99;

        Professor1.strDegree = "phd";

​

    }

}