static void Main(string[] args)
{
IBook book;
System.Console.WriteLine("Enter a gradebook label, such \"[your_name]'s book\" or an example class like \"science\" or \"math\" ( this won't catch exceptions :) )");
string bookLabel = Console.ReadLine();
Console.WriteLine("Enter one of the following\n1: Save grades to file in src directory\n2: Save grades to memory only");
string inputBookType = Console.ReadLine();
switch (int.Parse(inputBookType))
{
case int d when d == 1:
book = new DiscBook($"{bookLabel} grade book");
break;
default:
book = new InMemoryBook($"{bookLabel} grade book");
break;
}
book.GradeAdded += OnGradeAdded;
System.Console.WriteLine(book.Name);
EnterGrades(book);
Statistics stats = book.GetStatistics();
System.Console.WriteLine($"** {book.Name} Gradebook Statistics **");
System.Console.WriteLine($"Average: {stats.Average}");
System.Console.WriteLine($"Low: {stats.Low}");
System.Console.WriteLine($"High: {stats.High}");
System.Console.WriteLine($"Letter: {stats.Letter}");
}
static void Main(string[] args)
{
var book = new DiscBook("My grade book");
EnterGrade(book);
var stats = book.GetStats();
Console.WriteLine($"The Lowest grade is {stats.Low}");
Console.WriteLine($"The Highest grade is {stats.High}");
Console.WriteLine($"The Average grade is {stats.Average}");
Console.WriteLine($"The Letter grade is {stats.Letter}");
}
static void Main(string[] args)
{
IBook book = new DiscBook("Cj's Grade Book");
//Handle event
book.GradeAdded += OnGradeAdded;
// book.GradeAdded = null; NOT ALLOWED
EnterGrades(book);
//Loop, enter new grade.
var stats = book.GetStatistics();
Console.WriteLine($"For the book named {book.Name}");
Console.WriteLine($"The average grade is {stats.Average:N1}. The highest is {stats.High} and the lowest is {stats.Low}.");
Console.WriteLine($"The letter grade is {stats.Letter}");
}