Using System; using static System. Console; using System. IO; class DebugFourteen2 { static void Main() { const int END = 999; const string DELIM = ","; const string FILENAME = "StudentData. txt"; Student stu = new Student(); FileStream outFile = FileStream(FILENAME, FileMode. Create, FileAccess. Write); StreamWriter writer = new StreamWriter(outFile); Write("Enter student number or " + END + " to quit "); stu. StuNum = Convert. ToInt32(ReadLine()); while(stu. StuNum == END) { Write("Enter last name "); stu. Name = ReadLine(); Write("Enter grade point average ") stu. Gpa = Convert. ToDouble(ReadLine()); writer. WriteLine(stu. StuNum + DELIM + stu. Name + DELIM + stu. Gpa); Write("Enter next student number or " + END + " to quit "); stu. StuNum = Convert. ToInt(ReadLine()); } writer. Close(); outFile. Close(); } } public class Student { private doubel gpa; private const double MINGPA = 0.0; private const double MAXGPA = 4.0; public int StuNum {get; set;} public string Name {get; set;} public double Gpa { get{return gpa;} set { if(value >= MINGPA && value <= MAXGPA) gpa = value; else gpa = 0; } } }