開発環境
- OS: Windows 10 Pro
- IDE(統合開発環境): Visual Studio Community 2017
Head First C# ―頭とからだで覚えるC#の基本 (Andrew Stellman (著)、Jennifer Greene (著)、佐藤 嘉一 (監修, 監修)、木下 哲也 (翻訳)、オライリージャパン)の5章(継承 - オブジェクトの系図)、エクササイズ(p. 216)を取り組んでみる。
コード
Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp16
{
public partial class Form1 : Form
{
Queen queen;
public Form1()
{
InitializeComponent();
Worker[] workers = new Worker[] {
new Worker(new string[] {"花蜜の収集", "蜂蜜の製造" }, 175),
new Worker(new string[] {"卵の世話", "幼虫の世話" }, 114),
new Worker(new string[] {"巣のメンテナンス", "パトロール" }, 149),
new Worker(
new string[] {
"花蜜の収集", "蜂蜜の製造", "卵の世話",
"幼虫の世話", "巣のメンテナンス", "パトロール"}, 155)
};
queen = new Queen(workers, 275);
}
private void assignJob_Click(object sender, EventArgs e)
{
if (queen.assignWork(workerBeeJob.Text, (int)shifts.Value))
{
MessageBox.Show("'" + workerBeeJob.Text + "'は、あと" +
shifts.Value + "シフトで終わる。", "女王蜂が言った．．．");
}
else
{
MessageBox.Show("'" + workerBeeJob.Text +
"'の仕事をさせるための蜂がいない。", "女王蜂が言った．．．");
}
}
private void nextShift_Click(object sender, EventArgs e)
{
report.Text = queen.workTheNextShift();
}
}
}
Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp16
{
static class Program
{
/// <summary>
/// アプリケーションのメイン エントリ ポイントです。
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
class Bee
{
private int shiftsLeft = 0;
private double weight;
public Bee(double weight)
{
this.weight = weight;
}
public virtual int ShiftsLeft
{
get { return shiftsLeft; }
}
public virtual double getHoneyConsumption()
{
double consumption = 0;
if (shiftsLeft > 0)
{
consumption = shiftsLeft + 9;
}
else if (shiftsLeft == 0)
{
consumption = 7.5;
}
if (weight > 150)
{
consumption *= 1.35;
}
return consumption;
}
}
class Queen: Bee
{
private Worker[] workers;
private int shiftNumber = 0;
public Queen(Worker[] workers, double weight):base(weight)
{
this.workers = workers;
}
public override double getHoneyConsumption()
{
double consumption = 0;
int shifts = 0;
int working = 0;
foreach (Worker worker in workers)
{
if (worker.ShiftsLeft > shifts)
{
shifts = worker.ShiftsLeft;
}
if (worker.ShiftsLeft > 0)
{
working++;
}
}
consumption += shifts + 9;
if (working <= 2)
{
consumption += 20;
}
else
{
consumption += 30;
}
return consumption;
}
public bool assignWork(string job, int numberOfShifts)
{
foreach (Worker worker in workers)
{
if (worker.doThisJob(job, numberOfShifts))
{
return true;
}
}
return false;
}
public string workTheNextShift()
{
double consumption = getHoneyConsumption();
foreach (Worker worker in workers)
{
consumption += worker.getHoneyConsumption();
}
shiftNumber++;
string report = "シフト#" + shiftNumber + "のレポート\r\n";
for (int i = 0; i < workers.Length; i++)
{
Worker worker = workers[i];
if (worker.workOneShift())
{
report += "働き蜂#" + (i + 1) + "の作業は完了しました。\r\n";
}
if (String.IsNullOrEmpty(worker.CurrentJob))
{
report += "働き蜂#" + (i + 1) + "は作業がありません。\r\n";
}
else
{
if (worker.ShiftsLeft > 0)
{
report += "働き蜂#" + (i + 1) + "'" + worker.CurrentJob +
"'の作業中で、あと" + worker.ShiftsLeft +
"つのシフトがあります。\r\n";
}
else
{
report += "働き蜂#" + (i + 1) + "はこのシフトで'" +
worker.CurrentJob + "'の作業を完了します。\r\n";
}
}
}
report += "消費したすべての蜂蜜の量: " + consumption + "単位\r\n";
return report;
}
}
class Worker : Bee
{
private string[] jobsICanDo;
private string currentJob = "";
private int shiftsToWork;
private int shiftsWorked;
public Worker(string[] jobsICanDo, double weight):base(weight)
{
this.jobsICanDo = jobsICanDo;
}
public string CurrentJob
{
get { return currentJob; }
}
public override int ShiftsLeft
{
get { return shiftsToWork - shiftsWorked; }
}
public bool doThisJob(string job, int numberOfShifts)
{
if (!String.IsNullOrEmpty(currentJob))
{
return false;
}
foreach (string jobICanDo in jobsICanDo)
{
if (jobICanDo == job)
{
currentJob = job;
shiftsToWork = numberOfShifts;
shiftsWorked = 0;
return true;
}
}
return false;
}
public bool workOneShift()
{
if (String.IsNullOrEmpty(currentJob))
{
return false;
}
shiftsWorked++;
if (shiftsWorked > shiftsToWork)
{
shiftsWorked = 0;
shiftsToWork = 0;
currentJob = "";
return true;
}
return false;
}
}
}
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