C# Code:

implement the method

public String ClassListing()

in the Class class. It should return a string with the list of the students in the class.

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Code:

using System; using System.Collections.Generic; using System.Text;

namespace FirstOODApp { public class Class { private Faculty _teacher; public Faculty Teacher { set { _teacher = value; } get { return _teacher; } } private List _students; private String _courseNumber; public String CourseNumber { get { return _courseNumber; } }

public Class(String courseNumber) : this(courseNumber, null) { } // Designated Constructor public Class(String courseNumber, Faculty teacher) { _courseNumber = courseNumber; Teacher = teacher; _students = new List(); }

public void addStudent(IPeople student) { _students.Add(student); }

public String ClassListing() { return ""; } } }