private static void SaveGrades(GradeBook book)
{
using (StreamWriter outputFile = File.CreateText("grades.txt"))
{
book.WriteGrades(outputFile);
}
}
private static void exampleDelegate()
{
Console.WriteLine("Starting Delegate example");
GradeBook book = new GradeBook();
book.AddGrade(92);
book.AddGrade(34);
book.AddGrade(75);
GradeStatistics stats = book.ComputeStatistics();
//using delegate - this will later be triggered any time the name changes later.
// book.NameChanged = new NameChangedDelegate(OnNameChanged);
//alternate method : multi cast delegate
//multiple subscribers to execute when the event occurs
book.NameChanged += OnNameChanged;
book.NameChanged += OnNameChanged2;
//can unsubscribe from this event
// book.NameChanged -= OnNameChanged2;
book.Name = "changed name";
WriteNames(book.Name);
Console.WriteLine("Avg:" + stats.AverageGrade);
Console.WriteLine("Lowest" + stats.LowestGrade);
Console.WriteLine("Highest" + stats.HighestGrade);
}
public void LetterGradeTest()
{
var gradeBook1 = new GradeBook();
gradeBook1.AddGrade(90);
gradeBook1.AddGrade(100);
var stats1 = gradeBook1.ComputeStatistics();
Assert.AreEqual("A", stats1.LetterGrade);
var gradeBook2 = new GradeBook();
gradeBook2.AddGrade(80);
gradeBook2.AddGrade(87);
var stats2 = gradeBook2.ComputeStatistics();
Assert.AreEqual("B", stats2.LetterGrade);
var gradeBook3 = new GradeBook();
gradeBook3.AddGrade(77);
gradeBook3.AddGrade(79);
var stats3 = gradeBook3.ComputeStatistics();
Assert.AreEqual("C", stats3.LetterGrade);
var gradeBook4 = new GradeBook();
gradeBook4.AddGrade(67);
gradeBook4.AddGrade(61);
var stats4 = gradeBook4.ComputeStatistics();
Assert.AreEqual("D", stats4.LetterGrade);
var gradeBook5 = new GradeBook();
gradeBook5.AddGrade(58);
gradeBook5.AddGrade(12);
var stats5 = gradeBook5.ComputeStatistics();
Assert.AreEqual("F", stats5.LetterGrade);
}
static void Main(string[] args)
{
Arrays();
//Immutable();
GradeBook book = new GradeBook("Scott's book");
book.AddGrade(91f);
book.AddGrade(89.1f);
book.AddGrade(75f);
GradeStatistics stats = book.ComputeStatistics();
book.NameChanged = new NamedChangedDelegate(OnNameChanged);
book.NameChanged += OnNameChanged;
book.NameChanged += OnNameChanged2;
book.Name = "Allen's book";
WriteNames(book.Name);
Console.WriteLine(stats.AverageGrade);
Console.WriteLine(stats.LowestGrade);
Console.WriteLine(stats.HighestGrade);
Console.ReadLine();
}
public void PassByValue()
{
GradeBook book = new GradeBook();
book.Name = "Not set";
SetName(book);
Assert.AreEqual("Not set", book.Name);
}
public void PassByValue()
{
GradeBook book = new GradeBook();
book.Name = "Hello World";
SetName(book);
Assert.AreEqual(book.Name, "Hello World");
}
public void ComputeLowestGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(90.5f);
book.AddGrade(82);
GradeStatistics result = book.ComputeStatistics();
Assert.AreEqual(82, result.LowestGrade);
}
public void ComputeAverageGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(90.5f);
book.AddGrade(82);
GradeStatistics result = book.ComputeStatistics();
Assert.AreEqual(86.25, result.AverageGrade);
}
public void ReferenceTypesPassByValue()
{
var book1 = new GradeBook();
var book2 = book1;
GiveBookAName(book2);
Assert.AreNotEqual("A Grade Book", book1.Name);
}
public void ComputesLetterGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(88);
GradeStatistics result = book.ComputeStatistics();
Assert.AreEqual("B", result.LetterGrade);
}
private static void WriteResults(GradeBook book)
{
GradeStatistics stats = book.ComputeStatistics();
WriteResult("Average", stats.AverageGrade);
WriteResult("Highest", stats.HighestGrade);
WriteResult("Lowest", stats.LowestGrade);
WriteResult(stats.Description, stats.LetterGrade);
}
static void Main(string[] args)
{
GradeBook book = new GradeBook();
GetBookName(book);
AddGrades(book);
SaveGrades(book);
WriteResults(book);
}
public void PassByValue()
{
GradeBook book = new GradeBook();
book.Name = "Gradebook";
setName(book);
Assert.AreEqual("Not what you expected", book.Name);
}
public void ComputesHighestGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(10);
book.AddGrade(90);
GradeStatistics result = book.ComputeStatistics();
Assert.AreEqual(90, result.HighestGrade);
}
public void CalculateHighestGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(90f);
book.AddGrade(50f);
GradeStats stats = book.ComputeStats();
Assert.AreEqual(90f, stats.HighestGrade);
}
public void ComputesLowestGrade()
{
Grades.GradeBook book = new Grades.GradeBook();
book.AddGrade(10);
book.AddGrade(90);
Grades.GradeStatistics result = book.ComputeStatistics();
Assert.Equal(10, result.LowestGrade);
}
public void IsGradeValid()
{
GradeBook book = new GradeBook();
book.AddGrade(90f);
book.AddGrade(70f);
Assert.AreEqual(2, book._grades.Count);
}
private static void FillGradeBookWithRandomGrades(GradeBook GradeBook)
{
Random Random = new Random();
GradeBook.Name = "John Doe";
for (int i = 0; i < 6; i++) {
GradeBook.AddGrade(Random.Next(75, 100));
}
}
public void LowestGradeTest()
{
var gradeBook = new GradeBook();
gradeBook.AddGrade(90);
gradeBook.AddGrade(10);
var stats = gradeBook.ComputeStatistics();
Assert.AreEqual(10, stats.LowestGrade);
}
public void ComputesAverageGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(91);
book.AddGrade(89.5f);
book.AddGrade(75);
GradeStatistics result = book.ComputeStatistics();
Assert.AreEqual(85.16, result.AverageGrade, 0.01);
}
public void ComputesAverageGrade()
{
Grades.GradeBook book = new Grades.GradeBook();
book.AddGrade(91);
book.AddGrade(89.5f);
book.AddGrade(75);
Grades.GradeStatistics result = book.ComputeStatistics();
Assert.Equal(85.17, result.AverageGrade, 2);
}
private static void PassByValueAndRef()
{
GradeBook g1 = new GradeBook();
GradeBook g2 = g1;
GiveBookAName(ref g2);
Console.WriteLine(g2.Name);
int x1 = 10;
IncrementNumber(ref x1);
Console.WriteLine(x1);
}
public void AverageGradeTest()
{
var gradeBook = new GradeBook();
gradeBook.AddGrade(90);
gradeBook.AddGrade(10);
gradeBook.AddGrade(0);
var stats = gradeBook.ComputeStatistics();
Assert.AreEqual(33.33f, stats.Average, 0.01);
}
public void CalculateHighestGradeCorrectly()
{
GradeBook book = new GradeBook();
book.AddGrade(90f);
book.AddGrade(80f);
GradeStatistics stats = book.ComputeStatistics();
Assert.AreEqual(90f, stats.HighesetGrade);
}
public void AverageGradeTest()
{
GradeBook book = new GradeBook();
book.AddGrade(90f);
book.AddGrade(50f);
GradeStatistics stats = book.ComputeStatistics();
Assert.AreEqual(70, stats.AverageGrade);
}
public void LowestGradeTest()
{
GradeBook book = new GradeBook();
book.AddGrade(90);
book.AddGrade(50);
GradeStatistics stats = book.ComputeStatistics();
Assert.AreEqual(50, stats.LowestGrade);
}
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 book = new GradeBook();
book.AddGrade(91);
book.AddGrade(89.5f);
book.AddGrade(75);
GradeStatistics stats = book.ComputeStatistics();
Console.WriteLine(stats.AverageGrade);
Console.WriteLine(stats.HighestGrade);
Console.WriteLine(stats.LowestGrade);
}
static void Main(string[] args)
{
GradeBook book = new GradeBook();
book.AddGrade(91);
book.AddGrade(98.6f);
GradeStatistocs stats = book.ComputeStatistocs();
GradeBook book2 = book;
book2.AddGrade(75);
}
public void HighestGradeTest()
{
GradeBook book = new GradeBook();
book.AddGrade(90f);
book.AddGrade(50f);
GradeStatistics stats = book.ComputeStatistics();
Assert.AreEqual(90f, stats.HighestGrade);
}
private static void GetBookName(GradeBook book)
{
try
{
Console.WriteLine("Enter a name");
book.Name = Console.ReadLine();
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message);
}
}
public void CalculatesHighestGrade()
{
bool value = true;
GradeBook book = new GradeBook();
book.AddGrade(90f);
book.AddGrade(33f);
GradeStatistics stats = book.ComputeStatistics();
Assert.AreEqual(90f, stats.HighestGrade);
}
static void Main(string[] args)
{
GradeBook book = new GradeBook("Daniel's book");
GradebookThatThrowsAwayLowestGrade book2 = new GradebookThatThrowsAwayLowestGrade("Toms's book");
try
{
using (FileStream stream = File.Open("Grades.txt", FileMode.Open))
using (StreamReader reader = new StreamReader(stream))
{ // when you exit "using" it calls "Dispose" method that close anything that was opened/created in "using"
string line = reader.ReadLine();
while (line != null) // if == null --> this means end of file has been achieved
{
float grade = float.Parse(line);
book.AddGrade(grade);
book2.AddGrade(grade);
line = reader.ReadLine(); // reads NEXT line of file into memory
}
}
}
catch (FileNotFoundException)
{
Console.WriteLine("Coldn't locate file Grades.txt");
return;
}
catch (UnauthorizedAccessException)
{
Console.WriteLine("No access");
return;
}
//book.AddGrade(91f);
//book.AddGrade(89.1f);
//book.AddGrade(75f);
book.WriteGrades(Console.Out);
book2.WriteGrades(Console.Out);
//do
// try
// {
// {
// Console.WriteLine("Please enter a name for the book");
// book.Name = Console.ReadLine();
// Console.WriteLine("Please enter a name for the book that throws away lowest grade");
// book2.Name = Console.ReadLine();
// }
// }
// catch (ArgumentException ex)
// {
// Console.WriteLine("Invalid name");
// Console.WriteLine(ex.Message);
// Console.WriteLine();
// }
//while (book.Name == "Daniel's book");
GradeStatistics stats = book.ComputeStatistic();
GradeStatistics stats2 = book2.ComputeStatistic();
Console.WriteLine(book.Name);
WriteStatistics(stats);
Console.WriteLine(book2.Name);
WriteStatistics(stats2);
//book.NameChanged += OnNameChanged;
//book.Name = "Scott's book";
//WriteNames(book.Name);
//int number = 20;
//WriteBytes(number);
//WriteBytes(stats.AverageGrade);
//Immutable();
//ParamsAsValueOrAsReference();
}
static void Main(string[] args)
{
#region A1
//GradeBook g1 = new GradeBook();
//GradeBook g2 = g1;
//g1.Name = "Harirak";
//Console.WriteLine($" g2 = {g2.Name}");
//g2.Name = "toon";
//g1 = new GradeBook();//g1 have a new allocate. it's not point to previous box.
//Console.WriteLine($" g1 = {g1.Name}");
#endregion
#region previous code
GradeBook book = new GradeBook();
book.NameChanged += OnNameChanged;
book.NameChanged += OnToon;
book.Name = "Harirak";
book.AddGrade(91);
book.AddGrade(89.5f);
book.AddGrade(35);
book.AddGrade(41);
Console.WriteLine("hi");
book.Name = "Somtavil";
GradeStatistics stats = book.ComputeStatistics();
Console.WriteLine($"Show Highest Grade {stats.HighestGrade}");
Console.WriteLine($"Show Lowest Grade {stats.LowestGrade}");
Console.WriteLine($"Show Average Grade {stats.AverageGrade}");
Console.ReadLine();
book.Name = "hi Gradebook";
GradeBook book2 = new GradeBook();
Logger aa = new Logger();
Writer oo = new Writer(aa.M);
Writer write = new Writer(new Logger().WriteMessage); // new Logger().WriteMessage = Logger logger = new Logger();
// Writer write = new Writer(logger.WriteMessage);
write("hi");
Writer write1 = new Writer(new Logger().M);
write1("hi");
write = new Writer(new Logger2().WriteMessageOfLogger2);
write("call from logger2");
book.Name = "Toon";
#endregion
}
static void GiveBookAName(ref GradeBook book)
{
book.Name = "The Gradebook";
}
static void Main(string[] args)
{
GradeBook book = new GradeBook();
book.AddGrade(78);
book.AddGrade(99.444f);
book.AddGrade(80);
book.NameChange += OnNameChanged;
/*book.Name = "Hello, this is the Gradebook program!";
* book.Name = "The GradeBook Welcomes thee!";*/
bool validName = false;
string bookName;
while (validName == false)
{
try{
Console.WriteLine("Please Enter a Name for your gradebook: ");
bookName = Console.ReadLine();
if (bookName != null && bookName != "" && bookName != " ")
{
book.Name = bookName;
validName = true;
}
else
{
throw new ArgumentException("Name cannot be null or empty");
}
}
catch (ArgumentException ex) {
Console.WriteLine(ex.Message);
}
finally
{
Console.WriteLine("Thank you choosing a valid name!");
}
}
/*book.WriteGradesForLoop(Console.Out);
* book.WriteGradesForEachLoop(Console.Out);
* book.WriteGradesWhileLoop(Console.Out);*/
using (StreamWriter outputFile = File.CreateText("Grades.txt"))
{
book.WriteGradesToFile(outputFile);
outputFile.Close();
}
Statistics stats = book.ComputeStatistics();
if (stats.GetActiveStats() == true)
{
writeResult("Highest Grade", stats.GetHighestGrade());
writeResult("Lowest Grade", stats.GetLowestGrade());
writeResult("Average Grade", stats.GetAverGrade());
writeResult(stats.Description, stats.LetterGrade);
}
else
{
Console.WriteLine("There are no grades to compute!");
}
}
public GradeStatistics(GradeBook book)
{
_book = book;
}
static void GiveBookAName(GradeBook book)
{
book = new GradeBook();
book.Name = "Nowy dziennik";
}
static void Main(string[] args)
{
GradeBook book = new GradeBook();
book.AddGrade(91);
}
static void GiveBookAName(ref GradeBook book)
{
//book = new GradeBook();
//book.Name = "The Gradebook";
}
static void Main(string[] args)
{
// need to add system.speech reference to project for this to work.
// SpeechSynthesizer synth = new SpeechSynthesizer();
// synth.Speak("Hello! This is the gradebook program");
GradeBook book = new GradeBook();
///////////////////////////////////////////////////////////////
// need to initialize the delegate
// why not just do this in constructor?
// because you need the name of the method to be called.
book.NameChanged += new NameChangedDelegate(OnNameChanged);
/*
* // this will overwrite the original, wont trigger both methods
* book.NameChanged = new NameChangedDelegate(OnNameChanged2);
*
* // must do the += for it to do both
* book.NameChanged += new NameChangedDelegate(OnNameChanged2);
*
* // as an event, you can add the same method twice
* book.NameChanged += new NameChangedDelegate(OnNameChanged2);
*
* // as an event, you can also reduce some of the code
* // The C# compiler is smart enough to know what this means
* book.NameChanged += OnNameChanged2;
*
* // you can also do this to remove a reference:
* // this only removes one of them,
* // you would have to remove all 3 in this example to stop it
* book.NameChanged -= new NameChangedDelegate(OnNameChanged2);
*/
///////////////////////////////////////////////////////////////
book.Name = "Katy's Grade Book";
book.Name = "Grade Book";
book.AddGrade(91);
book.AddGrade(89.5f);
book.AddGrade(75);
GradeStatistics stats = book.ComputeStatistics();
//cw <tab><tab> creates a writeline
// Console.WriteLine(stats.AverageGrade);
// Console.WriteLine(stats.HighestGrade);
// Console.WriteLine(stats.LowestGrade);
// this shows how method overloading is used
Console.WriteLine(book.Name);
WriteResult("Average", stats.AverageGrade);
WriteResult("Highest", (int)stats.HighestGrade);
WriteResult("Lowest", stats.LowestGrade);
// WriteResult("example of multi-parms", 1, 2, 3, 4);
///////////////////////////////////////////////////////////////
/*
* // this logic shows how pointers/references work for classes
* GradeBook g1 = new GradeBook();
* GradeBook g2 = g1;
*
* g1 = new GradeBook(); // if this was not here, g2 would show g1's name
* g1.Name = "Katy's grade book";
* Console.WriteLine(g2.Name);
*/
Console.ReadLine();
}
private static void AddGrades(GradeBook grades)
{
grades.Add(50);
grades.Add(60);
grades.Add(70);
}
private static void AddGrades(GradeBook book)
{
book.AddGrade(91);
book.AddGrade(89.5f);
book.AddGrade(75);
}
private static void GetGradeBookName(GradeBook grades)
{
Console.Write("Enter Gradebook name : ");
grades.Name = Console.ReadLine();
}
