private static void WriteResults(GradeBook book)
{
SaveGrades(book);
GradeSatistics stats = book.ComputeStatistics();
WriteResult("Average", stats.AverageGrade);
WriteResult("Highest", stats.HighestGrade);
WriteResult("Lowest", stats.LowestGrade);
WriteResult(stats.Description, stats.LetterGrade);
}
public GradeSatistics ComputeStatistics()
{
GradeSatistics stats = new GradeSatistics();
float sum = 0;
foreach (float grade in grades)
{
//if (grade > stats.HighestGrade) stats.HighestGrade = grade;
//if (grade < stats.LowestGrade) stats.LowestGrade = grade;
stats.HighestGrade = Math.Max(grade, stats.HighestGrade);
stats.LowestGrade = Math.Min(grade, stats.LowestGrade);
sum += grade;
}
stats.AverageGrade = sum / grades.Count;
return(stats);
}