{"id":1076,"date":"2025-07-12T10:45:55","date_gmt":"2025-07-12T01:45:55","guid":{"rendered":"https:\/\/ha242.rundog.org\/?p=1076"},"modified":"2025-07-12T12:02:01","modified_gmt":"2025-07-12T03:02:01","slug":"%e8%ac%9b%e7%be%a9%e3%83%a1%e3%83%a2-28","status":"publish","type":"post","link":"https:\/\/ha242.rundog.org\/?p=1076","title":{"rendered":"\u8b1b\u7fa9\u30e1\u30e2"},"content":{"rendered":"

\u30c6\u30ad\u30b9\u30c8\u7de8\uff1ap.310\u300c12.5 \u30a4\u30d9\u30f3\u30c8\u300d\u304b\u3089
\n\u30b2\u30fc\u30e0\u958b\u767a\u6f14\u7fd2\uff1a\u753b\u9762\u9077\u79fb\u3001\u30bf\u30a4\u30de\u30fc\u51e6\u7406 \u306a\u3069<\/p>\n

p.310 12.5 \u30a4\u30d9\u30f3\u30c8<\/p>\n

\r\n\u30fb\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b Console.ReadLine()\u30e1\u30bd\u30c3\u30c9\u306e\u3088\u3046\u306b\u3001\u8d77\u52d5\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u52d5\u7684\u306b\u60c5\u5831\u3092\u5f97\u308b\r\n\u3000\u624b\u6bb5\u304c\u3042\u308b\r\n\u30fb\u3057\u304b\u3057\u3001Console.ReadLine()\u30e1\u30bd\u30c3\u30c9\u306f\u5358\u306a\u308b\u5165\u529b\u5f85\u3061\u3067\u3042\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5074\u304b\u3089\u306e\u5236\u5fa1\u306f\u3067\u304d\u306a\u3044\r\n\u30fb\u305d\u3053\u3067\u3001\u3042\u3089\u304b\u3058\u3081\u300c\u3053\u308c\u304c\u8d77\u304d\u305f\u3089\u3042\u308c\u3092\u3059\u308b\u300d\u3068\u3044\u3046\u5b9a\u7fa9\u3092\u3057\u3066\u304a\u304d\u3001\u5fc5\u8981\u6642\u306b\u52d5\u7684\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u4ed5\u639b\u3068\u3057\u3066\u3001\r\n\u3000\u30a4\u30d9\u30f3\u30c8\u6a5f\u80fd\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u3002\r\n\u30fb\u30ad\u30fc\u5165\u529b\u3001\u30de\u30a6\u30b9\u306e\u64cd\u4f5c\u3001\u901a\u4fe1\u306e\u53d7\u4fe1\u3001\u6642\u9593\u306e\u7d4c\u904e\u306a\u3069\u306e\u300c\u4f55\u304b\u304c\u8d77\u304d\u305f\u300d\u3053\u3068\u3092\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3068\u3044\u3046\u3002\r\n\u30fb\u30a4\u30d9\u30f3\u30c8\u306b\u5bfe\u3057\u3066\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u3082\u306e\u3092\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u3068\u3044\u3046\u3002\r\n\u3000\u203bJava\u8a00\u8a9e\u306a\u3069\u3067\u306f\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u3068\u3044\u3044\u3001C#\u306e\u66f8\u7c4d\u306b\u304a\u3044\u3066\u3082\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u3068\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308b\u3002\r\n\u30fbC#\u3067\u306f\u4e3b\u306b\u30d5\u30a9\u30fc\u30e0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u6271\u3046\u304c\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\r\n\u3000\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u306e\u5b9f\u88c5\u304c\u53ef\u80fd\u3002\r\n\u30fb\u4f8b\u3048\u3070\u3001Enter\u30ad\u30fc\u4ee5\u5916\u306e\u30ad\u30fc\u306e\u5165\u529b\u3092\u5373\u6642\u306b\u53d7\u3051\u53d6\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8a18\u8ff0\u3067\u304d\u308b\u3002<\/pre>\n
p.312 \u30a4\u30d9\u30f3\u30c8\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/p>\n
\r\n\u30fb\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u7528\u3044\u3066\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306e\u4f8b\uff08\u30af\u30e9\u30b9\u5074\uff09\uff1a\r\n\u3000\u2460 \u623b\u308a\u5024\u306a\u3057\u3001\u5f15\u6570\u306a\u3057\u306e\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5ba3\u8a00\u3059\u308b\r\n\u3000\u2461 \u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\r\n\u3000\u2462 \u2461\u306e\u4e2d\u306b\u2460\u3092\u7528\u3044\u308b\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\r\n\u3000\u3000\u66f8\u5f0f\uff1a public event \u30c7\u30ea\u30b2\u30fc\u30c8\u540d \u30a4\u30d9\u30f3\u30c8\u540d;\r\n\u3000\u2463 \u2461\u306e\u4e2d\u306b\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\uff08\u300cOn\u30a4\u30d9\u30f3\u30c8\u540d\u300d\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u540d\u3092\u63a8\u5968\uff09\r\n\u3000\u2464 \u2463\u306e\u4e2d\u3067\u300c\u30a4\u30d9\u30f3\u30c8\u540d();\u300d\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u3002\r\n\u3000\u3000\u305f\u3060\u3057\u3001\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u6e96\u5099\u304c\u3067\u304d\u3066\u3044\u306a\u3044\u3068\u304d\u306b\u52d5\u4f5c\u3059\u308b\u306e\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u30a4\u30d9\u30f3\u30c8\u540d\u304cnull\u3067\u306f\u306a\u3044\u304b\r\n\u3000\u3000\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\r\n\u30fb\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u7528\u3044\u3066\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306e\u4f8b\uff08Main()\u5074\uff09\uff1a\r\n\u3000\u2460 \u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u52d5\u4f5c\u3055\u305b\u305f\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304f\u3002\r\n\u3000\u2461 main()\u306e\u4e2d\u3067\u3001\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3002\r\n\u3000\u2462 main()\u306e\u4e2d\u3067\u300c\u2461.\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u300d\u306b\u5bfe\u3057\u3066\u3001\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u30c7\u30ea\u30b2\u30fc\u30c8\u306e\u66f8\u5f0f\u3067\u2460\u3092\u767b\u9332\r\n\u3000\u2463 main()\u306e\u4e2d\u3067\u300c\u2461.On\u30a4\u30d9\u30f3\u30c8\u540d()\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n\u30fb\u306a\u304a\u3001\u4e0a\u8a18\u306f\u8aac\u660e\u7528\u306b\u3001\u7121\u7406\u77e2\u7406\u30a4\u30d9\u30f3\u30c8\u3092\u8d77\u3053\u3055\u305b\u308b\u69cb\u6210\u306b\u306a\u3063\u3066\u3044\u308b<\/pre>\n
p.313 event01.cs<\/p>\n
\r\n\/\/p.313 event01.cs\r\nusing System;\r\ndelegate void MyDelegate(); \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u7528\u3044\u308b\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5ba3\u8a00\r\nclass MyEventClass { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n    public event MyDelegate eventname; \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9(\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5229\u7528)\r\n    public void OnEventname() { \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9\r\n        if (eventname != null) { \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u6e96\u5099\u6e08\u306a\u3089\u3070\r\n            eventname(); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n        }\r\n    }\r\n}\r\nclass MyClass { \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n    public void show() { \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\r\n        Console.WriteLine(\"show\");\r\n    }\r\n}\r\nclass MyClass2 { \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n    public void show2(){ \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\r\n        Console.WriteLine(\"show2!!\");\r\n    }\r\n}\r\nclass event01 {\r\n    public static void Main() {\r\n        MyClass mc = new MyClass(); \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n        MyClass2 mc2 = new MyClass2(); \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n        MyEventClass myevent = new MyEventClass(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n        myevent.eventname += new MyDelegate(mc.show); \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\u3092\u767b\u9332\r\n        myevent.eventname += new MyDelegate(mc2.show2); \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\u3082\u767b\u9332\r\n        myevent.OnEventname(); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n    }\r\n}<\/pre>\n
\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.313 event01.cs<\/p>\n
\r\n\u30fbmc.show\u30e1\u30bd\u30c3\u30c9\u3068\u3001mc2.show2\u30e1\u30bd\u30c3\u30c9\u3092\u533f\u540d\u30e1\u30bd\u30c3\u30c9\u306b\u3057\u3066\u3001\u30e9\u30e0\u30c0\u5f0f\u3067\u8a18\u8ff0\u3057\u3088\u3046\u3002\r\n\u30fb\u3053\u308c\u306b\u3088\u308a\u3001MyClass\u3001MyClass2\u306f\u4e0d\u8981\u306b\u306a\u308b\u3002<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.313 event01.cs\r\nusing System;\r\ndelegate void MyDelegate(); \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u7528\u3044\u308b\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5ba3\u8a00\r\nclass MyEventClass { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n    public event MyDelegate eventname; \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9(\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5229\u7528)\r\n    public void OnEventname() { \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9\r\n        if (eventname != null) { \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u6e96\u5099\u6e08\u306a\u3089\u3070\r\n            eventname(); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n        }\r\n    }\r\n}\r\n\/\/class MyClass { \/\/\u3010\u4ee5\u4e0b\u524a\u9664\u3011\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n\/\/    public void show() { \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\r\n\/\/        Console.WriteLine("show");\r\n\/\/    }\r\n\/\/}\r\n\/\/class MyClass2 { \/\/\u3010\u4ee5\u4e0b\u524a\u9664\u3011\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n\/\/    public void show2(){ \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\r\n\/\/        Console.WriteLine("show2!!");\r\n\/\/    }\r\n\/\/}<\/font>\r\nclass event01 {\r\n    public static void Main() {\r\n        \/\/MyClass mc = new MyClass(); \/\/\u3010\u524a\u9664\u3011\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n        \/\/MyClass2 mc2 = new MyClass2(); \/\/\u3010\u524a\u9664\u3011\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\u3092\u6301\u3064\u30af\u30e9\u30b9<\/font>\r\n        MyEventClass myevent = new MyEventClass(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n        myevent.eventname += () => Console.WriteLine("show"); \/\/\u3010\u5909\u66f4\u3011\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\u3092\u767b\u9332\r\n        myevent.eventname += () => Console.WriteLine("show2!!"); \/\/\u3010\u5909\u66f4\u3011\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\u3092\u767b\u9332<\/font>\r\n        myevent.OnEventname(); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n    }\r\n}<\/pre>\n
p.315 \u8d85\u7c21\u5358\uff11\u6841\u52a0\u7b97\u5668 event02.cs\uff08\u30c7\u30fc\u30bf\u578b\u306e\u69cb\u9020\u4f53\u3068\u305d\u306e\u30e1\u30f3\u30d0\uff09<\/p>\n
\r\n\u30fbC#\u306e\u5024\u578b\u306f\u69cb\u9020\u4f53\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\uff08p.45\uff09\r\n\u30fb\u89e3\u91c8\u3068\u3057\u3066\u306f\u3001\u901a\u5e38\u306e\u578b\u540d\u3092.NET\u578b\u306e\u578b\u540d(p.42)\u306b\u5185\u90e8\u7684\u306b\u5909\u63db\u3057\u3001\u3053\u306e\u540d\u306e\u69cb\u9020\u4f53\u3068\u3057\u3066\u7528\u3044\u3066\u3044\u308b\r\n\u30fb\u4f8b\u3048\u3070\u3001int\u578b\u306fSystem.Int32\u578b\u306b\u5909\u63db\u3055\u308c\u3001System.Int32\u69cb\u9020\u4f53\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3002\r\n\u30fb\u3088\u3063\u3066\u3001int.Parse()\u30e1\u30bd\u30c3\u30c9(p.45)\u3001System.Int32\u69cb\u9020\u4f53\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308a\u3001\u5024\u578b\u306e\u5404\u69cb\u9020\u4f53\u306bParse()\u30e1\u30bd\u30c3\u30c9\u304c\u5b58\u5728\u3057\u3066\u3044\u308b\u3002\r\n\u30fb\u306a\u304a\u3001\u30c7\u30fc\u30bf\u578b.MaxValue\u3001\u30c7\u30fc\u30bf\u578b.MinValue(p.45)\u306f\u69cb\u9020\u4f53\u306b\u542b\u307e\u308c\u308b\u5b9a\u6570\u3002\r\n\u30fb\u305d\u3057\u3066\u3001event02.cs\u3067\u7528\u3044\u308b Char.IsDigit(char)\u30e1\u30bd\u30c3\u30c9\u306f\u3001char\u578b\u304c\u5909\u63db\u3055\u308c\u308bSystem.Char\u69cb\u9020\u4f53\u306b\u542b\u307e\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308a\u3001\r\n\u3000.NET\u578b\u3067\u8868\u73fe\u3059\u308b\u3068 Char.IsDigit(Char)\u30e1\u30bd\u30c3\u30c9 \u3068\u306a\u308b\u3002\r\n\u30fbChar.GetNumericValue(char)\u30e1\u30bd\u30c3\u30c9\u3082\u540c\u69d8\u3067\u3001Char.GetNumericValue(Char)\u3002\r\n\u30fb\u306a\u304a\u3001GetNumericValue(char)\u30e1\u30bd\u30c3\u30c9\u306f\u3001double.Parse(\"\" + Char)\u3067\u4ee3\u7528\u3067\u304d\u308b\u304c\u3001double.Parse\u306f\u5909\u63db\u4e0d\u80fd\u6642\u306b\u7570\u5e38\u7d42\u4e86\u3059\u308b\u3002\r\n\u3000GetNumericValue(char)\u306f-1.0\u3092\u8fd4\u3059\u3002<\/pre>\n
p.315 \u8d85\u7c21\u5358\uff11\u6841\u52a0\u7b97\u5668 event02.cs\uff08ConsoleKeyInfo\u69cb\u9020\u4f53\u3068\u305d\u306e\u30e1\u30f3\u30d0\uff09<\/p>\n
\r\n\u30fbSystem.ConsoleKeyInfo\u306f\u3001\u62bc\u3055\u308c\u305f\u30ad\u30fc\u306e\u60c5\u5831\u3092\u8fd4\u3059\u305f\u3081\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3068\u3001\u4fbf\u5229\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6301\u3064\u69cb\u9020\u4f53\u3002\r\n\u30fbConsole.Readkey()\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u578b\u304cConsoleKeyInfo\u69cb\u9020\u4f53\u3067\u3001Readkey()\u30e1\u30bd\u30c3\u30c9\u306ebool\u578b\u5f15\u6570\u3068\u3057\u3066true\u3092\u6e21\u3059\u3068\u30ad\u30fc\u60c5\u5831\u3092\r\n\u3000\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u975e\u8868\u793a\u306b\u3067\u304d\u308b\u3002\r\n\u30fbp.293\u306eConsole.KeyAvailable\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u30ad\u30fc\u5165\u529b\u304c\u3042\u308c\u3070true\u3092\u8fd4\u3059\u306e\u3067\u3001\u3053\u306e\u6642\u306bConsole.Readkey()\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u826f\u3044\r\n\u30fb\u305d\u3057\u3066\u3001\u62bc\u3055\u308c\u305f\u30ad\u30fc\u306e\u60c5\u5831\u306f\u3001ConsoleKeyInfo\u69cb\u9020\u4f53\u306eKeyChar\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u5f97\u3089\u308c\u308b\u3002\u623b\u308a\u5024\u306fchar\u578b\u306a\u306e\u3067\u3001\r\n\u3000\u6587\u5b57\u30ad\u30fc\u3067\u3042\u308c\u3070char\u578b\u30ea\u30c6\u30e9\u30eb\u3067\u6bd4\u8f03\u53ef\u80fd\u3002<\/pre>\n
p.315 event02.cs<\/p>\n
\r\n\/\/p.315 event02.cs\r\nusing System;\r\ndelegate void Handler(char ch); \/\/\u30c7\u30ea\u30b2\u30fc\u30c8\u306e\u5ba3\u8a00(\u623b\u308a\u5024\u7121\u3057\u3001\u5f15\u6570\u306f\u6587\u5b57)\r\nclass EventClass { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n    public event Handler KeyHit; \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30a4\u30d9\u30f3\u30c8\u540dKeyHit\u3067\u5b9a\u7fa9\r\n    public void OnKeyHit(char ch) { \/\/KeyHit\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9\r\n        if (KeyHit != null) { \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304cnull\u3067\u306a\u3051\u308c\u3070\r\n            KeyHit(ch); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n        }\r\n    }\r\n}\r\nclass Show { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n    int sum = 0; \/\/\u5408\u8a08\u5024\r\n    public void keyshow(char ch) { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9\r\n        if (Char.IsDigit(ch)) { \/\/\u6587\u5b57\u304c10\u9032\u6570\u5b57(0\uff5e9)\u306e\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n            int a = (int)char.GetNumericValue(ch); \/\/\u6587\u5b57\u3092\u5b9f\u6570\u5316\u3001\u6574\u6570\u5316\u3059\u308b\r\n            sum += a; \/\/\u5909\u63db\u7d50\u679c\u3092\u5408\u8a08\u5024\u306b\u8db3\u3057\u3053\u3080\r\n            Console.WriteLine(\"+ {0}\", a); \/\/\u5909\u63db\u7d50\u679c\u3092\u8868\u793a\r\n            Console.WriteLine(\"= {0}\", sum); \/\/\u5408\u8a08\u5024\u3092\u8868\u793a\r\n        } else if (ch == 'c') { \/\/\u300cc\u300d\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n            sum = 0; \/\/\u5408\u8a08\u5024\u3092\u30af\u30ea\u30a2\r\n            Console.WriteLine(\"\u5408\u8a08\u304c\u30af\u30ea\u30a2\u3055\u308c\u307e\u3057\u305f\");\r\n        } else { \/\/\u6570\u5b57\u30ad\u30fc\u3067\u3082c\u30ad\u30fc\u3067\u3082\u306a\u3051\u308c\u3070\r\n            return; \/\/\u4f55\u3082\u3057\u306a\u3044\r\n        }\r\n    }\r\n}\r\nclass event02 { \r\n    public static void Main() {\r\n        ConsoleKeyInfo cki; \/\/\u30ad\u30fc\u60c5\u5831\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u306a\u3069\u3092\u6301\u3064\u69cb\u9020\u4f53\r\n        EventClass ec = new EventClass(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n        Show s = new Show(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n        ec.KeyHit += new Handler(s.keyshow); \/\/\u30a4\u30d9\u30f3\u30c8\u306b\u30c7\u30ea\u30b2\u30fc\u30c8\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u767b\u9332\r\n        while (true) { \/\/\u7121\u9650\u30eb\u30fc\u30d7\r\n            if (Console.KeyAvailable) { \/\/\u4f55\u304b\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n                cki = Console.ReadKey(true); \/\/\u305d\u306e\u30ad\u30fc\u3092\u5f97\u308b\r\n                if (cki.KeyChar == 'x') { \/\/x\u30ad\u30fc\u3067\u3042\u308c\u3070\r\n                    break; \/\/\u30eb\u30fc\u30d7\u3092\u629c\u3051\u308b\uff08\u7d42\u4e86\uff09\r\n                } else { \/\/x\u30ad\u30fc\u4ee5\u5916\u3067\u3042\u308c\u3070\r\n                    ec.OnKeyHit(cki.KeyChar); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n                }\r\n            }\r\n        }\r\n    }\r\n}<\/pre>\n
\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.315 event02.cs<\/p>\n
\r\n\u30fbp.319\u306b\u3042\u308b\u3068\u304a\u308a\u3001\u30e9\u30e0\u30c0\u5f0f\u3067\u66f8\u304d\u63db\u3048\u3088\u3046<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.315 event02.cs\r\nusing System;\r\ndelegate void Handler(char ch); \/\/\u30c7\u30ea\u30b2\u30fc\u30c8\u306e\u5ba3\u8a00(\u623b\u308a\u5024\u7121\u3057\u3001\u5f15\u6570\u306f\u6587\u5b57)\r\nclass EventClass { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n    public event Handler KeyHit; \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30a4\u30d9\u30f3\u30c8\u540dKeyHit\u3067\u5b9a\u7fa9\r\n    public void OnKeyHit(char ch) { \/\/KeyHit\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9\r\n        if (KeyHit != null) { \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304cnull\u3067\u306a\u3051\u308c\u3070\r\n            KeyHit(ch); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n        }\r\n    }\r\n}\r\nclass Show { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n    int sum = 0; \/\/\u5408\u8a08\u5024\r\n    public void keyshow(char ch) { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9\r\n        if (Char.IsDigit(ch)) { \/\/\u6587\u5b57\u304c10\u9032\u6570\u5b57(0\uff5e9)\u306e\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n            int a = (int)char.GetNumericValue(ch); \/\/\u6587\u5b57\u3092\u5b9f\u6570\u5316\u3001\u6574\u6570\u5316\u3059\u308b\r\n            sum += a; \/\/\u5909\u63db\u7d50\u679c\u3092\u5408\u8a08\u5024\u306b\u8db3\u3057\u3053\u3080\r\n            Console.WriteLine("+ {0}", a); \/\/\u5909\u63db\u7d50\u679c\u3092\u8868\u793a\r\n            Console.WriteLine("= {0}", sum); \/\/\u5408\u8a08\u5024\u3092\u8868\u793a\r\n        } else if (ch == 'c') { \/\/\u300cc\u300d\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n            sum = 0; \/\/\u5408\u8a08\u5024\u3092\u30af\u30ea\u30a2\r\n            Console.WriteLine("\u5408\u8a08\u304c\u30af\u30ea\u30a2\u3055\u308c\u307e\u3057\u305f");\r\n        } else { \/\/\u6570\u5b57\u30ad\u30fc\u3067\u3082c\u30ad\u30fc\u3067\u3082\u306a\u3051\u308c\u3070\r\n            return; \/\/\u4f55\u3082\u3057\u306a\u3044\r\n        }\r\n    }\r\n}\r\nclass event02 { \r\n    public static void Main() {\r\n        ConsoleKeyInfo cki; \/\/\u30ad\u30fc\u60c5\u5831\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u306a\u3069\u3092\u6301\u3064\u69cb\u9020\u4f53\r\n        EventClass ec = new EventClass(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n        Show s = new Show(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n        ec.KeyHit += (c) => s.keyshow(c); \/\/\u3010\u5909\u66f4\u3011\u30a4\u30d9\u30f3\u30c8\u306b\u30c7\u30ea\u30b2\u30fc\u30c8\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u767b\u9332<\/font>\r\n        while (true) { \/\/\u7121\u9650\u30eb\u30fc\u30d7\r\n            if (Console.KeyAvailable) { \/\/\u4f55\u304b\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n                cki = Console.ReadKey(true); \/\/\u305d\u306e\u30ad\u30fc\u3092\u5f97\u308b\r\n                if (cki.KeyChar == 'x') { \/\/x\u30ad\u30fc\u3067\u3042\u308c\u3070\r\n                    break; \/\/\u30eb\u30fc\u30d7\u3092\u629c\u3051\u308b\uff08\u7d42\u4e86\uff09\r\n                } else { \/\/x\u30ad\u30fc\u4ee5\u5916\u3067\u3042\u308c\u3070\r\n                    ec.OnKeyHit(cki.KeyChar); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n                }\r\n            }\r\n        }\r\n    }\r\n}<\/pre>\n
p.320 \u7df4\u7fd2\u554f\u984c 1 ex1201.cs<\/p>\n
\r\n\u30fbp.308 lambda02.cs \u3068\u540c\u3058\u5185\u5bb9\r\n\u30fb\u3088\u3063\u3066\u3001\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\u3068\u3057\u3066\u3001double\u578b\u306e2\u5f15\u6570\u3092\u3088\u308a\u3001\u305d\u308c\u3089\u306e\u5dee\u3092\u8fd4\u3059\u3088\u3046\u306b\u66f8\u304d\u63db\u3048\u3088\u3046\r\n\u30fb\u306a\u304a\u3001\u5dee\u306f\u300c\u5927\u304d\u3044\u65b9 - \u5c0f\u3055\u3044\u65b9\u300d\u3067\u5f97\u308b\u3053\u3068<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.320 \u7df4\u7fd2\u554f\u984c 1 ex1201.cs\r\nusing System;\r\ndelegate double MyDelegate(double x, double y); \/\/\u30c7\u30ea\u30b2\u30fc\u30c8\u306e\u5ba3\u8a00(\u623b\u308a\u5024\u6709\u308a\u3001\uff12\u5f15\u6570)<\/font>\r\nclass lambda02 {\r\n    public static void Main() {\r\n        MyDelegate md = (x, y) => { return (x > y) ? x - y : y - x; }; \/\/\u5f15\u6570x\u3001y\u306e\u578b\u306f\u6307\u5b9a\u4e0d\u8981\r\n        Console.WriteLine("2\u30683\u306e\u5dee\u306f{0}", md(2, 3)); \/\/\u30c7\u30ea\u30b2\u30fc\u30c8\u7d4c\u7531\u3067\u547c\u3073\u51fa\u3059\r\n        Console.WriteLine("3.14\u30682.2\u306e\u5dee\u306f{0}", md(3.14, 2.2)); \/\/\u30c7\u30ea\u30b2\u30fc\u30c8\u7d4c\u7531\u3067\u547c\u3073\u51fa\u3059<\/font>\r\n    }\r\n}<\/pre>\n
p.320 \u7df4\u7fd2\u554f\u984c 2 ex1202.cs \u30d2\u30f3\u30c8<\/p>\n
\r\n\u30fbp.315 event02.cs\u3092\u57fa\u306b\u4e0b\u8a18\u306e\u30a2\u30ec\u30f3\u30b8\u3092\u884c\u304a\u3046\r\n\u2460 \u30a4\u30d9\u30f3\u30c8\u3092\u5b9f\u884c\u3057\u305f\u7d50\u679c\u3092return\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u578b\u3092int\u306b\u3001\u5f15\u6570\u578b\u3092int,int\u306b\u3059\u308b\r\n\u2461 \u3088\u3063\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u3068\u5171\u306b\u3001\u7d50\u679c\u3092\u8fd4\u3059\u3088\u3046\u306b\u300creturn KeyHit(int,int);\u300d\u3068\u3059\u308b\r\n\u2462 \u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304cnull\u306e\u6642\u306b\u4f55\u3082\u8fd4\u3055\u306a\u3044\u3068\u6587\u6cd5\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u300c-1\u300d\u3092\u8fd4\u3059\u3068\u826f\u3044\r\n\u2463 \u3053\u308c\u306b\u4f34\u3044\u3001\u30c7\u30ea\u30b2\u30fc\u30c8\u306e\u5ba3\u8a00\u3092\u300c\u623b\u308a\u5024\u3042\u308a(int)\u3001\u5f15\u6570\u3042\u308a(int,int)\u300d\u306b\u3057\u3088\u3046\r\n\u2464 \u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u3053\u3068\u306f\u300creturn x + y;\u300d\u306b\u3067\u304d\u308b\u306e\u3067\u3001Show\u30af\u30e9\u30b9\u306f\u4e0d\u8981\u306b\u306a\u308b\r\n\u2465 keyshow()\u30e1\u30bd\u30c3\u30c9\u3067\u884c\u3063\u3066\u3044\u305f\u300c\u6587\u5b57\u304c10\u9032\u6570\u5b57(0\uff5e9)\u306e\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\u300d\u300c\u6587\u5b57\u3092\u5b9f\u6570\u5316\u3001\u6574\u6570\u5316\u3059\u308b\u300d\u306f\u3001\r\n\u3000Main()\u30e1\u30bd\u30c3\u30c9\u3067\u884c\u3046\u3068\u826f\u3044\r\n\u2466 Main()\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u30ad\u30fc\u5165\u529b\uff11\u56de\u76ee\u306e\u5024\u3092\u4fdd\u6301\u3057\u3066\u304a\u304d\u3001\uff12\u56de\u76ee\u306e\u30ad\u30fc\u5165\u529b\u3067\uff12\u6570\u3092\u6e21\u3059\u5f62\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n\u2467 \u305d\u3057\u3066\u3001\u7d50\u679c\u3092\u8868\u793a\u3057\u305f\u3089\u3001\u30eb\u30fc\u30d7\u3092\u629c\u3051\u3066\u7d42\u4e86\u3059\u308b\u3068\u826f\u3044<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/p.320 \u7df4\u7fd2\u554f\u984c 2 ex1202.cs\r\nusing System;\r\ndelegate int Handler(int x, int y); \/\/\u3010\u5909\u66f4\u3011\u30c7\u30ea\u30b2\u30fc\u30c8\u306e\u5ba3\u8a00(\u623b\u308a\u5024\u6709\u308a\u3001\u5f15\u6570\u306f\uff12\u6574\u6570)<\/font>\r\nclass EventClass { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n    public event Handler KeyHit; \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30a4\u30d9\u30f3\u30c8\u540dKeyHit\u3067\u5b9a\u7fa9\r\n    public int OnKeyHit(int x, int y) { \/\/\u3010\u5909\u66f4\u3011KeyHit\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9<\/font>\r\n        if (KeyHit != null) { \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304cnull\u3067\u306a\u3051\u308c\u3070\r\n            return KeyHit(x, y); \/\/\u3010\u5909\u66f4\u3011\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n        } else { \/\/\u3010\u4ee5\u4e0b\u8ffd\u52a0\u3011null\u3067\u3042\u308c\u3070\r\n            return -1; \/\/\u30c0\u30df\u30fc\u306e\u5024\u3068\u3057\u3066-1\u3092\u8fd4\u3059\r\n        }<\/font>\r\n    }\r\n}\r\nclass event02 { \r\n    public static void Main() {\r\n        ConsoleKeyInfo cki; \/\/\u30ad\u30fc\u60c5\u5831\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u306a\u3069\u3092\u6301\u3064\u69cb\u9020\u4f53\r\n        EventClass ec = new EventClass(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\r\n        \/\/Show s = new Show(); \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u5b9f\u884c\u3057\u305f\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30af\u30e9\u30b9\r\n        ec.KeyHit += (x, y) => { return x + y; }; \/\/\u3010\u5909\u66f4\u3011\u30a4\u30d9\u30f3\u30c8\u306b\u30c7\u30ea\u30b2\u30fc\u30c8\u3068\u51e6\u7406\u3092\u767b\u9332\r\n        int left = -1; \/\/\u3010\u8ffd\u52a0\u3011\u30ad\u30fc\u5165\u529b\uff11\u56de\u76ee\u306e\u5024\u3092\u4fdd\u6301\u3059\u308b\u5909\u6570<\/font>\r\n        while (true) { \/\/\u7121\u9650\u30eb\u30fc\u30d7\r\n            if (Console.KeyAvailable) { \/\/\u4f55\u304b\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n                cki = Console.ReadKey(true); \/\/\u305d\u306e\u30ad\u30fc\u3092\u5f97\u308b\r\n                char ch = cki.KeyChar; \/\/\u3010\u8ffd\u52a0\u3011\u62bc\u3055\u308c\u305f\u30ad\u30fc\u540d\u3092\u53d6\u308a\u51fa\u3059\r\n                if (Char.IsDigit(ch)) { \/\/\u3010\u79fb\u52d5\u3011\u6587\u5b57\u304c10\u9032\u6570\u5b57(0\uff5e9)\u306e\u30ad\u30fc\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\r\n                    int a = (int)(char.GetNumericValue(ch)); \/\/\u3010\u79fb\u52d5\u3011\u6587\u5b57\u3092\u5b9f\u6570\u5316\u3001\u6574\u6570\u5316\u3059\u308b\r\n                    if (left == -1) { \/\/\u3010\u4ee5\u4e0b\u8ffd\u52a0\u3011\u30ad\u30fc\u5165\u529b\uff11\u56de\u76ee\uff1f\r\n                        left = a; \/\/\u5165\u529b\u5024\u3092\u4fdd\u6301\r\n                    }\r\n                    else { \/\/\u30ad\u30fc\u5165\u529b2\u56de\u76ee\uff1f\r\n                        int sum = ec.OnKeyHit(left, a); \/\/2\u5165\u529b\u5024\u3092\u6e21\u3057\u3066\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\r\n                        Console.WriteLine("{0} + {1} = {2}", left, a, sum);\r\n                        break; \/\/\u7121\u9650\u30eb\u30fc\u30d7\u3092\u629c\u3051\u308b\r\n                    }\r\n                }<\/font>\r\n            }\r\n        }\r\n    }\r\n}<\/pre>\n
\u7b2c13\u7ae0 \u4f8b\u5916<\/strong><\/p>\n
p.321 \u4f8b\u5916\u51e6\u7406\u306e\u57fa\u790e<\/p>\n
\r\n\u30fb\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u3088\u3063\u3066\u7570\u5e38\u72b6\u614b\u304c\u767a\u751f\u3059\u308b\u3068\u300c\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\u300d\u3068\u3057\u3066\u3001\u767a\u751f\u6642\u70b9\u3067\u7570\u5e38\u7d42\u4e86\u3059\u308b\u3002\r\n\u30fb\u3053\u306e\u7570\u5e38\u72b6\u614b\u3092\u300c\u4f8b\u5916\uff08Exception\uff09\u300d\u3068\u3057\u3066\u3001\u3053\u308c\u3092\u8868\u3059\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\r\n\u30fb\u3053\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d7\u3051\u53d6\u3063\u3066\u51e6\u7406\u3059\u308b\u4ed5\u7d44\u307f\u304c\u4f8b\u5916\u51e6\u7406\u3067\u3001\u4f8b\u5916\u51e6\u7406\u3092\u7d44\u307f\u8fbc\u3080\u3053\u3068\u3067\u300c\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\u300d\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u308b\u3002\r\n\u30fb\u4f8b\u3048\u3070\u3001p.322 exception01.cs \u306e\u3088\u3046\u306b\u3001double.Parse()\u30e1\u30bd\u30c3\u30c9\u306b\u5b9f\u6570\u306b\u5909\u63db\u3067\u304d\u306a\u3044\u6587\u5b57\u5217\u3092\u6e21\u3059\u3068\u3001\r\n\u3000Exception\u30af\u30e9\u30b9\u306e\u6d3e\u751f\u30af\u30e9\u30b9\u3067\u3042\u308bFormatException\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u751f\u6210\u3055\u308c\u3001\u4f8b\u5916\u51e6\u7406\u304c\u306a\u3044\u306e\u3067\u7570\u5e38\u7d42\u4e86\u3059\u308b\u3002\r\n\u30fb\u4ee5\u4e0b\u304c\u7570\u5e38\u7d42\u4e86\u6642\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u305d\u306e\u89e3\u8aac\uff1a\r\n\u3000\u30cf\u30f3\u30c9\u30eb\u3055\u308c\u3066\u3044\u306a\u3044\u4f8b\u5916: System.FormatException: \u5165\u529b\u6587\u5b57\u5217\u306e\u5f62\u5f0f\u304c\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\r\n\u3000\u21d2\u300c\u30cf\u30f3\u30c9\u30eb\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3068\u306f\u4f8b\u5916\u51e6\u7406\u304c\u306a\u3044\u304b\u4f8b\u5916\u51e6\u7406\u5bfe\u8c61\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u793a\u3059\r\n\u3000\u21d2\u300cSystem.FormatException\u300d\u306f\u5f62\u5f0f\u4f8b\u5916\u3092\u8868\u3059\u30af\u30e9\u30b9\r\n\u3000\u21d2\u300c\u5165\u529b\u6587\u5b57\u5217\u306e\u5f62\u5f0f\u304c\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u300d\u306f\u3053\u306e\u30af\u30e9\u30b9\u306eMessage\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u3042\u308b\u6587\u5b57\u5217\r\n   \u5834\u6240 System.Number.ParseDouble(String value, NumberStyles options, NumberFormatInfo numfmt)\r\n   \u5834\u6240 System.Double.Parse(String s)\r\n   \u5834\u6240 MyClass.Main() \u5834\u6240 F:\\ha241_AkibaC#\\Project1\\Project1\\exception01.cs:\u884c 9\r\n\u3000\u21d2\u4e0b\u304b\u3089\u4e0a\u306b\u5411\u304b\u3063\u3066\u4f8b\u5916\u767a\u751f\u306e\u7d4c\u7def\u3092\u793a\u3059\u3002C#\u3067\u5b9f\u969b\u306b\u3069\u3046\u6271\u308f\u308c\u305f\u304b\u304c\u308f\u304b\u308b\r\n\u3000\u21d2\u4e00\u756a\u4e0b\u306e\uff11\u884c\u3067\u300c\u767a\u751f\u306e\u8d77\u56e0\u3068\u306a\u3063\u305f\u30af\u30e9\u30b9\u540d.\u30e1\u30bd\u30c3\u30c9\u540d \u5834\u6240\uff1a\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u540d:\u884c\u756a\u53f7\u300d\u304c\u660e\u793a\u3055\u308c\u3066\u3044\u308b<\/pre>\n
\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.322 exception01.cs<\/p>\n
\r\n\u30fb\u5909\u6570a\u3001b\u3092int\u578b\u306b\u5909\u66f4\u3057\u3088\u3046\r\n\u30fb\u3059\u308b\u3068\u3001System.FormatException(\u5f62\u5f0f\u4f8b\u5916)\u4ee5\u5916\u306e\u4f8b\u5916\u3092\u8a66\u3059\u3053\u3068\u304c\u3067\u304d\u308b\r\n\u3000\u2460\u300c\u5272\u3089\u308c\u308b\u6570\u300d\u3084\u300c\u5272\u308b\u6570\u300d\u306bint\u578b\u306e\u6700\u5927\u5024\u3092\u8d85\u3048\u308b\u5024\u3084\u3001\u6700\u5c0f\u5024\u3092\u4e0b\u56de\u308b\u5024\u3092\u5165\u529b\u3057\u305f\u5834\u5408\r\n\u3000\u2461\u300c\u5272\u308b\u6570\u300d\u306b 0 \u3092\u5165\u529b\u3057\u305f\u5834\u5408\uff08double\u578b\u306e\u5834\u5408\u306f\u300c\u221e\u300d\u3068\u8868\u793a\u3055\u308c\u7570\u5e38\u7d42\u4e86\u3057\u306a\u3044\uff09<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.322 exception01.cs\r\nusing System;\r\nclass MyClass\r\n{\r\n    public static void Main()\r\n    {\r\n        Console.Write("\u5272\u3089\u308c\u308b\u6570--");\r\n        string strA = Console.ReadLine();\r\n        int a = int.Parse(strA); \/\/\u3010\u5909\u66f4\u3011FormatException\u3001OverflowException\u767a\u751f\u53ef\u80fd\u6027<\/font>\r\n        Console.Write("\u5272\u308b\u6570---");\r\n        string strB = Console.ReadLine();\r\n        int b = int.Parse(strB); \/\/\u3010\u5909\u66f4\u3011FormatException\u3001OverflowException\u767a\u751f\u53ef\u80fd\u6027<\/font>\r\n        Console.WriteLine("{0} \u00f7 {1} = {2}", a, b, a \/ b); \/\/DevideByZeroException\u767a\u751f\u53ef\u80fd\u6027\r\n    }\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u30c6\u30ad\u30b9\u30c8\u7de8\uff1ap.310\u300c12.5 \u30a4\u30d9\u30f3\u30c8\u300d\u304b\u3089 \u30b2\u30fc\u30e0\u958b\u767a\u6f14\u7fd2\uff1a\u753b\u9762\u9077\u79fb\u3001\u30bf\u30a4\u30de\u30fc\u51e6\u7406 \u306a\u3069 p.310 12.5 \u30a4\u30d9\u30f3\u30c8 \u30fb\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b Console.ReadLine()\u30e1\u30bd\u30c3\u30c9\u306e\u3088\u3046\u306b\u3001\u8d77\u52d5\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u52d5\u7684\u306b\u60c5\u5831\u3092\u5f97\u308b \u3000\u624b\u6bb5\u304c\u3042\u308b \u30fb\u3057\u304b\u3057\u3001Console.ReadLine()\u30e1\u30bd\u30c3\u30c9\u306f\u5358\u306a\u308b\u5165\u529b\u5f85\u3061\u3067\u3042\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5074\u304b\u3089\u306e\u5236\u5fa1\u306f\u3067\u304d\u306a\u3044 \u30fb\u305d\u3053\u3067\u3001\u3042\u3089\u304b\u3058\u3081\u300c\u3053\u308c\u304c\u8d77\u304d\u305f\u3089\u3042\u308c\u3092\u3059\u308b\u300d\u3068\u3044\u3046\u5b9a\u7fa9\u3092\u3057\u3066\u304a\u304d\u3001\u5fc5\u8981\u6642\u306b\u52d5\u7684\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u4ed5\u639b\u3068\u3057\u3066\u3001 \u3000\u30a4\u30d9\u30f3\u30c8\u6a5f\u80fd\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u3002 \u30fb\u30ad\u30fc\u5165\u529b\u3001\u30de\u30a6\u30b9\u306e\u64cd\u4f5c\u3001\u901a\u4fe1\u306e\u53d7\u4fe1\u3001\u6642\u9593\u306e\u7d4c\u904e\u306a\u3069\u306e\u300c\u4f55\u304b\u304c\u8d77\u304d\u305f\u300d\u3053\u3068\u3092\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3068\u3044\u3046\u3002 \u30fb\u30a4\u30d9\u30f3\u30c8\u306b\u5bfe\u3057\u3066\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u3082\u306e\u3092\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u3068\u3044\u3046\u3002 \u3000\u203bJava\u8a00\u8a9e\u306a\u3069\u3067\u306f\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u3068\u3044\u3044\u3001C#\u306e\u66f8\u7c4d\u306b\u304a\u3044\u3066\u3082\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u3068\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308b\u3002 \u30fbC#\u3067\u306f\u4e3b\u306b\u30d5\u30a9\u30fc\u30e0\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u6271\u3046\u304c\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001 \u3000\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u306e\u5b9f\u88c5\u304c\u53ef\u80fd\u3002 \u30fb\u4f8b\u3048\u3070\u3001Enter\u30ad\u30fc\u4ee5\u5916\u306e\u30ad\u30fc\u306e\u5165\u529b\u3092\u5373\u6642\u306b\u53d7\u3051\u53d6\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8a18\u8ff0\u3067\u304d\u308b\u3002 p.312 \u30a4\u30d9\u30f3\u30c8\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 \u30fb\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u7528\u3044\u3066\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306e\u4f8b\uff08\u30af\u30e9\u30b9\u5074\uff09\uff1a \u3000\u2460 \u623b\u308a\u5024\u306a\u3057\u3001\u5f15\u6570\u306a\u3057\u306e\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5ba3\u8a00\u3059\u308b \u3000\u2461 \u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3059\u308b \u3000\u2462 \u2461\u306e\u4e2d\u306b\u2460\u3092\u7528\u3044\u308b\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9\u3059\u308b \u3000\u3000\u66f8\u5f0f\uff1a public event \u30c7\u30ea\u30b2\u30fc\u30c8\u540d \u30a4\u30d9\u30f3\u30c8\u540d; \u3000\u2463 \u2461\u306e\u4e2d\u306b\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\uff08\u300cOn\u30a4\u30d9\u30f3\u30c8\u540d\u300d\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u540d\u3092\u63a8\u5968\uff09 \u3000\u2464 \u2463\u306e\u4e2d\u3067\u300c\u30a4\u30d9\u30f3\u30c8\u540d();\u300d\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u3002 \u3000\u3000\u305f\u3060\u3057\u3001\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u6e96\u5099\u304c\u3067\u304d\u3066\u3044\u306a\u3044\u3068\u304d\u306b\u52d5\u4f5c\u3059\u308b\u306e\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u30a4\u30d9\u30f3\u30c8\u540d\u304cnull\u3067\u306f\u306a\u3044\u304b \u3000\u3000\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068 \u30fb\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3082\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u7528\u3044\u3066\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306e\u4f8b\uff08Main()\u5074\uff09\uff1a \u3000\u2460 \u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u306b\u3088\u308a\u52d5\u4f5c\u3055\u305b\u305f\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u8a18\u8ff0\u3057\u3066\u304a\u304f\u3002 \u3000\u2461 main()\u306e\u4e2d\u3067\u3001\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3002 \u3000\u2462 main()\u306e\u4e2d\u3067\u300c\u2461.\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u300d\u306b\u5bfe\u3057\u3066\u3001\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u30c7\u30ea\u30b2\u30fc\u30c8\u306e\u66f8\u5f0f\u3067\u2460\u3092\u767b\u9332 \u3000\u2463 main()\u306e\u4e2d\u3067\u300c\u2461.On\u30a4\u30d9\u30f3\u30c8\u540d()\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b \u30fb\u306a\u304a\u3001\u4e0a\u8a18\u306f\u8aac\u660e\u7528\u306b\u3001\u7121\u7406\u77e2\u7406\u30a4\u30d9\u30f3\u30c8\u3092\u8d77\u3053\u3055\u305b\u308b\u69cb\u6210\u306b\u306a\u3063\u3066\u3044\u308b p.313 event01.cs \/\/p.313 event01.cs using System; delegate void MyDelegate(); \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u7528\u3044\u308b\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5ba3\u8a00 class MyEventClass { \/\/\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u3092\u62c5\u3046\u30af\u30e9\u30b9 public event MyDelegate eventname; \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9(\u30c7\u30ea\u30b2\u30fc\u30c8\u3092\u5229\u7528) public void OnEventname() { \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b\u30e1\u30bd\u30c3\u30c9 if (eventname != null) { \/\/\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u6e96\u5099\u6e08\u306a\u3089\u3070 eventname(); \/\/\u30a4\u30d9\u30f3\u30c8\u3092\u767a\u751f\u3055\u305b\u308b } } } class MyClass { \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460\u3092\u6301\u3064\u30af\u30e9\u30b9 public void show() { \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2460 Console.WriteLine(“show”); } } class MyClass2 { \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461\u3092\u6301\u3064\u30af\u30e9\u30b9 public void show2(){ \/\/\u30a4\u30d9\u30f3\u30c8\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u2461 Console.WriteLine(“show2!!”); } } class event01 {… <\/p>\n
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