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GradeBook.cs
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GradeBook.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MSVSCode
{
public class GradeBook : GradeTracker
{
protected List<float> grades;
public GradeBook()
{
_name = "Empty";
grades = new List<float>();
}
public override void AddGrade(float grade)
{
if (float.IsNegative(grade))
{
throw new ArgumentException("Grade cannot be negative");
}
grades.Add(grade);
}
public override void WriteGrades(TextWriter destination)
{
for (int i = 0; i < grades.Count; i++)
{
destination.WriteLine(grades[i]);
}
}
public override IEnumerator GetEnumerator()
{
return grades.GetEnumerator();
}
public override GradeStatistics ComputeStatistics()
{
GradeStatistics stats = new GradeStatistics();
float sum = 0;
foreach (float grade in grades)
{
stats.HighestGrade = Math.Max(grade, stats.HighestGrade);
stats.LowestGrade = Math.Min(grade, stats.LowestGrade);
sum += grade;
}
stats.AverageGrade = sum / grades.Count;
return stats;
}
}
}