static void Main(string[] args)
{
var book = new Book("Pedro's grade book");
Console.Clear();
Console.WriteLine("Welcome to GradeBook");
while (true)
{
Console.WriteLine("Enter a grade and press enter or enter 'q' to compute statistics and quit");
string input = Console.ReadLine();
if (input.ToLower() == "q" && book.HasGrades())
{
Console.Clear();
break;
}
else if (input.ToLower() == "q")
{
Console.Clear();
Console.WriteLine("Please enter at least one grade");
continue;
}
try
{
var grade = double.Parse(input);
book.AddGrade(grade);
Console.Clear();
Console.WriteLine($"Grade Added: {input}");
}
catch (ArgumentException ex)
{
Console.Clear();
Console.WriteLine(ex.Message);
}
catch (FormatException ex)
{
Console.Clear();
Console.WriteLine(ex.Message);
}
}
var stats = book.GetStatistics();
Console.WriteLine("Here are your statistics:");
Console.WriteLine($"The lowest grade is {stats.Low}");
Console.WriteLine($"The highest grade is {stats.High}");
Console.WriteLine($"The average grade is {stats.Average:N2}");
Console.WriteLine($"The letter grade is {stats.Letter}");
}
