06/15日のC#勉強会で出した課題の解答例

Example1.cs

using System;
using CampusSquare;

class Example1
{
    static void Main(string[] args)
    {
        var grades = new CampusSquare.DummyCampusSquare("record.html").GetGrades();

        double creditSum = 0, gradeSum = 0;

        foreach (IGrade grade in grades)
        {
            creditSum += grade.CreditNum;
            gradeSum += grade.CreditNum * grade.GradeNum;
        }

        double gpa = gradeSum / creditSum;

        Console.WriteLine("GPA:\t{0}", gpa);

        int max = 0, min = 4;

        foreach (IGrade grade in grades)
        {
            max = Math.Max(max, grade.GradeNum);
            min = Math.Min(min, grade.GradeNum);
        }

        Console.WriteLine("\ngood:");

        foreach (IGrade grade in grades)
        {
            if (grade.GradeNum == max)
            {
                Console.WriteLine("\t{0}:{1}", grade.Grade, grade.Name);
            }
        }

        Console.WriteLine("\nbad:");

        foreach (IGrade grade in grades)
        {
            if (grade.GradeNum == min)
            {
                Console.WriteLine("\t{0}:{1}", grade.Grade, grade.Name);
            }
        }
    }
}