static void Main(string[] args)
{
SpeechSynthesizer synth = new SpeechSynthesizer();
//synth.Speak("Hello");
GradeBook book = new GradeBook();
book.AddGrade(91);
book.AddGrade(89.5f);
GradeBook book2 = book;
book2.AddGrade(75);
book.NameChanged += new NameChangedDelegate(OnNameChanged);
book.NameChanged += new NameChangedDelegate(OnNameChanged2);
book.name = "Chris' grades";
foreach (var aGrade in book.GetGrades())
{
Console.WriteLine(aGrade);
}
Console.WriteLine("");
GradeStatistics stats = new GradeStatistics(book);
stats.ComputeStatistics();
Console.WriteLine(book.name);
Console.WriteLine($"Average: {stats.GetAverageGrade()}");
Console.WriteLine($"Highest: {stats.GetHighestGrade()}");
Console.WriteLine($"Lowest: {stats.GetLowestGrade()}");
}
static void Main(string[] args)
{
GradeBook GradeBook = new GradeBook();
bool Done = false;
int MaxNumberOfAttempts = 5;
int NumberOfAttempts = 0;
while (!Done)
{
Console.WriteLine("Please enter name of file containing student grades.");
try {
using (FileStream stream = File.Open(Console.ReadLine(), FileMode.Open))
using (StreamReader reader = new StreamReader(stream)) {
string line = reader.ReadLine();
while (line != null)
{
float grade = float.Parse(line);
GradeBook.AddGrade(grade);
line = reader.ReadLine();
}
Console.WriteLine("Student's grades:");
foreach (float grade in GradeBook.GetGrades())
{
Console.WriteLine(grade);
}
Console.WriteLine(GradeBook.Name);
Console.WriteLine("Average grade:" + GradeBook.LetterGrade + " (" + GradeBook.AverageGrade() + ")");
Console.WriteLine("Highest grade:" + GradeBook.HighestGrade());
Console.WriteLine("Lowest grade:" + GradeBook.LowestGrade());
Done = true;
}
} catch (DirectoryNotFoundException ex) {
Console.WriteLine("Invalid entry, please try again.");
} catch (ArgumentException ex) {
Console.WriteLine("Invalid entry, please try again.");
} catch (FileNotFoundException ex) {
Console.WriteLine("Could not find the file grades.txt");
} catch (UnauthorizedAccessException ex) {
Console.WriteLine("You do not have access to grades.txt");
}
NumberOfAttempts++;
if (NumberOfAttempts > MaxNumberOfAttempts)
{
Console.WriteLine("Max number of attempts exceeded, exiting.");
Done = true;
}
}
Console.Read();
}
static void Main(string[] args)
{
GradeBook GradeBook = new GradeBook();
bool Done = false;
int MaxNumberOfAttempts = 5;
int NumberOfAttempts = 0;
while (!Done) {
Console.WriteLine("Please enter name of file containing student grades.");
try {
using (FileStream stream = File.Open(Console.ReadLine(), FileMode.Open))
using (StreamReader reader = new StreamReader(stream)) {
string line = reader.ReadLine();
while (line != null) {
float grade = float.Parse(line);
GradeBook.AddGrade(grade);
line = reader.ReadLine();
}
Console.WriteLine("Student's grades:");
foreach (float grade in GradeBook.GetGrades()) {
Console.WriteLine(grade);
}
Console.WriteLine(GradeBook.Name);
Console.WriteLine("Average grade:" + GradeBook.LetterGrade + " (" + GradeBook.AverageGrade() +")");
Console.WriteLine("Highest grade:" + GradeBook.HighestGrade());
Console.WriteLine("Lowest grade:" + GradeBook.LowestGrade());
Done = true;
}
} catch (DirectoryNotFoundException ex) {
Console.WriteLine("Invalid entry, please try again.");
} catch (ArgumentException ex) {
Console.WriteLine("Invalid entry, please try again.");
} catch (FileNotFoundException ex) {
Console.WriteLine("Could not find the file grades.txt");
} catch (UnauthorizedAccessException ex) {
Console.WriteLine("You do not have access to grades.txt");
}
NumberOfAttempts++;
if (NumberOfAttempts > MaxNumberOfAttempts) {
Console.WriteLine("Max number of attempts exceeded, exiting.");
Done = true;
}
}
Console.Read();
}
public void ComputeStatistics()
{
_highestGrade = 0;
if (_book.GetGrades().Count == 0)
{
_lowestGrade = 0;
_averageGrade = 0;
}
else
{
_lowestGrade = float.MaxValue;
_averageGrade = _book.GetGrades().Sum() / _book.GetGrades().Count;
}
foreach (float grade in _book.GetGrades())
{
_highestGrade = Math.Max(grade, (float)_highestGrade);
_lowestGrade = Math.Min(grade, (float)_lowestGrade);
}
}
public GradeStatistics(GradeBook book)
{
this.HighestGrade = Double.MinValue;
this.LowestGrade = Double.MaxValue;
this.AverageGrade = 0;
IEnumerable grades = book.GetGrades();
//this.HighestGrade =
Int32 count = 0;
foreach (Double grade in grades)
{
this.HighestGrade = Math.Max(this.HighestGrade, grade);
this.LowestGrade = Math.Min(this.LowestGrade, grade);
this.AverageGrade += grade;
count++;
}
this.AverageGrade /= count;
}