{"id":261,"date":"2022-06-25T14:32:15","date_gmt":"2022-06-25T06:32:15","guid":{"rendered":"https:\/\/www.fengjijiao.cn\/?p=261"},"modified":"2022-06-29T14:45:36","modified_gmt":"2022-06-29T06:45:36","slug":"csharp%e7%b1%bb%ef%bc%88class%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.fengjijiao.cn\/?p=261","title":{"rendered":"C#\u7c7b\uff08Class\uff09"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>using System;\r\n\r\nnamespace ConsoleApp1\r\n{\r\n    class Box\r\n    {\r\n        public double length;\/\/\u957f\u5ea6\r\n        public double breadth;\/\/\u5bbd\u5ea6\r\n        public double height;\/\/\u9ad8\u5ea6\r\n    }\r\n    class BoxV2\r\n    {\r\n        private double length;\r\n        private double breadth;\r\n        private double height;\r\n        public void setLength(double l)\r\n        {\r\n            length = l;\r\n        }\r\n        public void setBreadth(double b)\r\n        {\r\n            breadth = b;\r\n        }\r\n        public void setHeight(double h)\r\n        {\r\n            height = h;\r\n        }\r\n        public double getVolume()\r\n        {\r\n            return length * breadth * height;\r\n        }\r\n    }\r\n    class Line\r\n    {\r\n        private double length;\/\/\u7ebf\u6761\u7684\u957f\u5ea6\r\n        public Line()\r\n        {\r\n            Console.WriteLine(\"\u5bf9\u8c61\u5df2\u521b\u5efa\uff01\");\r\n        }\r\n        public void setLength(double l)\r\n        {\r\n            length =l;\r\n        }\r\n        public double getLength()\r\n        {\r\n            return length;\r\n        }\r\n    }\r\n    class LineV2\r\n    {\r\n        private double length;\/\/\u7ebf\u6761\u7684\u957f\u5ea6\r\n        public LineV2(double l)\r\n        {\r\n            length = l;\r\n        }\r\n        public void setLength(double l)\r\n        {\r\n            length = l;\r\n        }\r\n        public double getLength()\r\n        {\r\n            return length;\r\n        }\r\n    }\r\n    class LineV3\r\n    {\r\n        private double length;\/\/\u7ebf\u6761\u7684\u957f\u5ea6\r\n        public LineV3()\r\n        {\r\n            Console.WriteLine(\"\u5bf9\u8c61\u5df2\u521b\u5efa\uff01\");\r\n        }\r\n        ~LineV3()\r\n        {\r\n            Console.WriteLine(\"\u5bf9\u8c61\u5df2\u5220\u9664\uff01\");\r\n        }\r\n        public void setLength(double l)\r\n        {\r\n            length = l;\r\n        }\r\n        public double getLength()\r\n        {\r\n            return length;\r\n        }\r\n    }\r\n    class StaticVar\r\n    {\r\n        public static int num;\r\n        public void count()\r\n        {\r\n            num++;\r\n        }\r\n        public int getNum()\r\n        {\r\n            return num;\r\n        }\r\n    }\r\n    class StaticFun\r\n    {\r\n        public static int num;\r\n        public void count()\r\n        {\r\n            num++;\r\n        }\r\n        public static int getNum()\r\n        {\r\n            return num;\r\n        }\r\n    }\r\n\r\n    class Shape\r\n    {\r\n        protected int width;\r\n        protected int height;\r\n        public void setWidth(int w)\r\n        {\r\n            width = w;\r\n        }\r\n        public void setHeight(int h)\r\n        {\r\n            height = h;\r\n        }\r\n    }\r\n    class Rectangle: Shape\r\n    {\r\n        public int getArea()\r\n        {\r\n            return (width * height);\r\n        }\r\n    }\r\n    class RectangleA\r\n    {\r\n        protected double length;\r\n        protected double width;\r\n        public RectangleA(double l, double w)\r\n        {\r\n            length = l;\r\n            width = w;\r\n        }\r\n        public double GetArea()\r\n        {\r\n            return length * width;\r\n        }\r\n        public void Display()\r\n        {\r\n            Console.WriteLine(\"\u957f\u5ea6: {0}\", length);\r\n            Console.WriteLine(\"\u5bbd\u5ea6: {0}\", width);\r\n            Console.WriteLine(\"\u9762\u79ef: {0}\", GetArea());\r\n        }\r\n    }\r\n    class Tabletop: RectangleA\r\n    {\r\n        private double cost;\r\n        public Tabletop(double l, double w) : base(l, w)\r\n        { }\r\n        public double GetCost()\r\n        {\r\n            double cost;\r\n            cost = GetArea() * 70;\r\n            return cost;\r\n        }\r\n        public void Display()\r\n        {\r\n            base.Display();\r\n            Console.WriteLine(\"\u6210\u672c: {0}\", GetCost());\r\n        }\r\n    }\r\n    public interface PaintCost\r\n    {\r\n        int getCost(int area);\r\n    }\r\n    class RectangleB: Shape, PaintCost\r\n    {\r\n        public int getArea()\r\n        {\r\n            return width * height;\r\n        }\r\n        public int getCost(int area)\r\n        {\r\n            return area * 57;\r\n        }\r\n    }\r\n    class Program\r\n    {\r\n        static void Main(string&#91;] args)\r\n        {\r\n            Box box1 = new Box();\r\n\r\n            double volume = 0.0;\r\n        \r\n            box1.height = 5.0;\r\n            box1.length = 6.0;\r\n            box1.breadth = 7.0;\r\n\r\n            volume = box1.height * box1.length * box1.breadth;\r\n            Console.WriteLine(\"box1\u7684\u4f53\u79ef\uff1a {0}\", volume);\r\n\r\n            BoxV2 box2 = new BoxV2();\r\n            box2.setBreadth(7.0);\r\n            box2.setHeight(5.0);\r\n            box2.setLength(6.0);\r\n            Console.WriteLine(\"box2\u7684\u4f53\u79ef\uff1a {0}\", box2.getVolume());\r\n\r\n            Line line1 = new Line();\r\n            line1.setLength(6.0);\r\n            Console.WriteLine(\"line1\u7ebf\u6761\u7684\u957f\u5ea6\uff1a{0}\", line1.getLength());\r\n\r\n\r\n            LineV2 line2 = new LineV2(6.0);\r\n            Console.WriteLine(\"line2\u7ebf\u6761\u7684\u957f\u5ea6\uff1a{0}\", line2.getLength());\r\n\r\n            \/\/\u6790\u6784\u51fd\u6570\r\n            {\r\n                LineV3 line3 = new LineV3();\r\n                line3.setLength(5.70);\r\n                Console.WriteLine(\"line3\u7ebf\u6761\u7684\u957f\u5ea6\uff1a{0}\", line3.getLength());\r\n            }\r\n\r\n            \/\/\u9759\u6001\u6210\u5458\u53d8\u91cf\r\n            StaticVar s1 = new StaticVar();\r\n            StaticVar s2 = new StaticVar();\r\n            s1.count();\r\n            s1.count();\r\n            s1.count();\r\n            s2.count();\r\n            s2.count();\r\n            Console.WriteLine(\"s1\u7684\u53d8\u91cfnum: {0}\", s1.getNum());\r\n            Console.WriteLine(\"s2\u7684\u53d8\u91cfnum: {0}\", s2.getNum());\r\n\r\n            \/\/\u9759\u6001\u6210\u5458\u51fd\u6570\r\n            StaticFun s3 = new StaticFun();\r\n            s3.count();\r\n            s3.count();\r\n            s3.count();\r\n            Console.WriteLine(\"\u53d8\u91cf num: {0}\", StaticFun.getNum());\r\n\r\n\r\n            \/\/\u7ee7\u627f\r\n            \/\/\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u6d3e\u751f\u81ea\u591a\u4e2a\u7c7b\u6216\u63a5\u53e3\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u53ef\u4ee5\u4ece\u591a\u4e2a\u79ef\u7d2f\u6216\u63a5\u53e3\u7ee7\u627f\u6570\u636e\u548c\u51fd\u6570\u3002\r\n            \/*\r\n             * &lt;\u8bbf\u95ee\u4fee\u9970\u7b26> class &lt;\u57fa\u7c7b>\r\n             * {\r\n             * ...\r\n             * }\r\n             * class &lt;\u6d3e\u751f\u7c7b>:&lt;\u57fa\u7c7b>\r\n             * {\r\n             * ...\r\n             * }\r\n             *\/\r\n            Rectangle rect = new Rectangle();\r\n            rect.setHeight(6);\r\n            rect.setWidth(5);\r\n            Console.WriteLine(\"\u603b\u9762\u79ef\uff1a{0}\", rect.getArea());\r\n\r\n            \/\/\u57fa\u7c7b\u7684\u521d\u59cb\u5316\r\n            \/\/\u6d3e\u751f\u7c7b\u7ee7\u627f\u4e86\u57fa\u7c7b\u7684\u6210\u5458\u53d8\u91cf\u548c\u6210\u5458\u65b9\u6cd5\uff0c\u56e0\u6b64\u7236\u7c7b\u5bf9\u8c61\u5e94\u5728\u5b50\u7c7b\u5bf9\u8c61\u521b\u5efa\u4e4b\u524d\u88ab\u521b\u5efa\u3002\u4f60\u53ef\u4ee5\u5728\u6210\u5458\u521d\u59cb\u5316\u5217\u8868\u4e2d\u8fdb\u884c\u7236\u7c7b\u521d\u59cb\u5316\u3002\r\n            Tabletop tt = new Tabletop(4.5, 7.5);\r\n            tt.Display();\r\n\r\n            \/\/\u591a\u91cd\u7ee7\u627f\r\n            \/\/\u591a\u91cd\u7ee7\u627f\u6307\u7684\u662f\u4e00\u4e2a\u7c7b\u522b\u53ef\u4ee5\u540c\u65f6\u4ece\u591a\u4e8e\u4e00\u4e2a\u7236\u7c7b\u7ee7\u627f\u884c\u4e3a\u4e0e\u7279\u5f81\u7684\u529f\u80fd\u3002\u4e0e\u5355\u4e00\u7ee7\u627f\u76f8\u5bf9\uff0c\u5355\u4e00\u7ee7\u627f\u6307\u4e00\u4e2a\u7c7b\u522b\u53ea\u53ef\u4ee5\u7ee7\u627f\u81ea\u4e00\u4e2a\u7236\u7c7b\u3002\r\n            \/\/C#\u4e0d\u652f\u6301\u591a\u91cd\u7ee7\u627f\u3002\u4f46\u662f\uff0c\u53ef\u4ee5\u4f7f\u7528\u63a5\u53e3\u6765\u5b9e\u73b0\u591a\u91cd\u7ee7\u627f\u3002\r\n            RectangleB rb = new RectangleB();\r\n            int area;\r\n            rb.setWidth(5);\r\n            rb.setHeight(7);\r\n            area = rb.getArea();\r\n            Console.WriteLine(\"\u603b\u9762\u79ef\uff1a{0}\", rb.getArea());\r\n            Console.WriteLine(\"\u6cb9\u6f06\u6210\u672c\uff1a{0}\", rb.getCost(area));\r\n\r\n            \/\/\u591a\u6001\u6027\r\n            \/\/\u9759\u6001\u591a\u6001\u6027\uff1a\u51fd\u6570\u91cd\u8f7d\u3001\u8fd0\u7b97\u7b26\u91cd\u8f7d\r\n            \/\/\u51fd\u6570\u91cd\u8f7d\uff1a\u4f60\u53ef\u4ee5\u5728\u540c\u4e00\u4e2a\u8303\u56f4\u5185\u5bf9\u76f8\u540c\u7684\u51fd\u6570\u540d\u6709\u591a\u4e2a\u5b9a\u4e49\u3002\u51fd\u6570\u7684\u5b9a\u4e49\u5fc5\u987b\u5f7c\u6b64\u4e0d\u540c\uff0c\u53ef\u4ee5\u662f\u53c2\u6570\u5217\u8868\u4e2d\u7684\u53c2\u6570\u7c7b\u578b\u4e0d\u540c\uff0c\u4e5f\u53ef\u4ee5\u662f\u53c2\u6570\u4e2a\u6570\u4e0d\u540c\u3002\u4e0d\u80fd\u91cd\u8f7d\u53ea\u6709\u8fd4\u56de\u7c7b\u578b\u4e0d\u540c\u7684\u51fd\u6570\u58f0\u660e\u3002\r\n            \/*\r\n             * public class TestData\r\n             * {\r\n             *     public int Add(int a, int b, int c)\r\n             *     {\r\n             *         return a+b+c;\r\n             *     }\r\n             *     public int Add(int a, int b)\r\n             *     {\r\n             *         return a+b;\r\n             *     }\r\n             * }\r\n             * public class PrintData\r\n             * {\r\n             *     void print(int i)\r\n             *     {\r\n             *         Console.WriteLine(\"\u8f93\u51fa\u6574\u578b\uff1a{0}\", i);\r\n             *     }\r\n             *     void print(double d)\r\n             *     {\r\n             *         Console.WriteLine(\"\u8f93\u51fa\u6d6e\u70b9\u578b\uff1a{0}\", d);\r\n             *     }\r\n             *     void print(string s)\r\n             *     {\r\n             *         Console.WriteLine(\"\u8f93\u51fa\u5b57\u7b26\u4e32\uff1a{0}\", s);\r\n             *     }\r\n             * }\r\n             *\/\r\n            \/\/\u52a8\u6001\u591a\u6837\u6027\r\n            \/\/C#\u5141\u8bb8\u4f7f\u7528abstract\u521b\u5efa\u62bd\u8c61\u7c7b\uff0c\u7528\u4e8e\u63d0\u4f9b\u63a5\u53e3\u7684\u90e8\u5206\u7c7b\u7684\u5b9e\u73b0\u3002\u5f53\u4e00\u4e2a\u6d3e\u751f\u7c7b\u7ee7\u627f\u81ea\u8be5\u62bd\u8c61\u7c7b\u65f6\uff0c\u5b9e\u73b0\u5373\u5b8c\u6210\u3002\u62bd\u8c61\u7c7b\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\uff0c\u62bd\u8c61\u65b9\u6cd5\u53ef\u4ee5\u88ab\u6d3e\u751f\u7c7b\u5b9e\u73b0\uff0c\u6d3e\u751f\u7c7b\u5177\u6709\u66f4\u4e13\u4e1a\u7684\u529f\u80fd\u3002\r\n            \/*\r\n             * \u62bd\u8c61\u7c7b\u7684\u4e00\u4e9b\u89c4\u5219\r\n             * \u4e0d\u80fd\u521b\u5efa\u4e00\u4e2a\u62bd\u8c61\u7c7b\u7684\u5b9e\u4f8b\u3002\r\n             * \u4e0d\u80fd\u5728\u4e00\u4e2a\u62bd\u8c61\u7c7b\u5916\u90e8\u58f0\u660e\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5\u3002\r\n             * \u901a\u8fc7\u5728\u7c7b\u5b9a\u4e49\u524d\u9762\u653e\u7f6e\u5173\u952e\u5b57sealed\uff0c\u53ef\u4ee5\u5c06\u7c7b\u58f0\u660e\u4e3a\u5bc6\u5c01\u7c7b\u3002\u5f53\u4e00\u4e2a\u7c7b\u88ab\u58f0\u660e\u4e3asealed\u65f6\uff0c\u5b83\u4e0d\u80fd\u88ab\u7ee7\u627f\u3002\u62bd\u8c61\u7c7b\u4e0d\u80fd\u88ab\u58f0\u660e\u4e3asealed\u3002\r\n             * abstract class Shape\r\n             * {\r\n             *     abstract public int area();\r\n             * }\r\n             * class Rectangle: Shape\r\n             * {\r\n             *     private int length;\r\n             *     private int width;\r\n             *     public Rectangle(int a = 0, int b = 0)\r\n             *     {\r\n             *         length = a;\r\n             *         width = b;\r\n             *     }\r\n             *     public override int area()\r\n             *     {\r\n             *         Console.WriteLine(\"Rectangle\u7c7b\u7684\u9762\u79ef\uff1a\");\r\n             *         return (width * length);\r\n             *     }\r\n             * }\r\n             *\/\r\n            \/\/\u5f53\u6709\u4e00\u4e2a\u5b9a\u4e49\u5728\u7c7b\u4e2d\u7684\u51fd\u6570\u9700\u8981\u5728\u7ee7\u627f\u7c7b\u4e2d\u5b9e\u73b0\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u865a\u65b9\u6cd5\u3002\r\n            \/\/\u865a\u65b9\u6cd5\u662f\u4f7f\u7528\u5173\u952e\u5b57virtual\u58f0\u660e\u7684\u3002\r\n            \/\/\u865a\u65b9\u6cd5\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u7ee7\u627f\u7c7b\u4e2d\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\u3002\r\n            \/\/\u5bf9\u865a\u65b9\u6cd5\u7684\u8c03\u7528\u662f\u5728\u8fd0\u884c\u65f6\u53d1\u751f\u7684\u3002\r\n            \/\/\u52a8\u6001\u591a\u6001\u6027\u662f\u901a\u8fc7\u62bd\u8c61\u7c7b\u548c\u865a\u65b9\u6cd5\u5b9e\u73b0\u7684\u3002\r\n            \/\/\u4ee5\u4e0b\u5b9e\u4f8b\u521b\u5efa\u4e86Shape\u57fa\u7c7b\uff0c\u5e76\u521b\u5efa\u6d3e\u751f\u7c7bCircle\u3001Rectangle\u3001Triangle\u3001Shape\u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3aDraw\u7684\u865a\u62df\u65b9\u6cd5\uff0c\u5728\u6bcf\u4e2a\u6d3e\u751f\u7c7b\u4e2d\u91cd\u5199\u8be5\u65b9\u6cd5\u4ee5\u7ed8\u5236\u8be5\u7c7b\u6307\u5b9a \u7684\u5f62\u72b6\u3002\r\n            \/*\r\n             * public class Shape\r\n             * {\r\n             *     public int X{get; private set;}\r\n             *     public int Y{get; private set;}\r\n             *     public int Height{get;set;}\r\n             *     public int Width{get;set;}\r\n             *     public virtual void Draw()\r\n             *     {\r\n             *        Console.WriteLine(\"\u6267\u884c\u57fa\u672c\u7684\u753b\u56fe\u4efb\u52a1\uff01\");\r\n             *     }\r\n             * }\r\n             * class Rectangle: Shape\r\n             * {\r\n             *     public override void Draw()\r\n             *     {\r\n             *         Console.WriteLine(\"\u753b\u4e00\u4e2a\u957f\u65b9\u5f62\");\r\n             *         base.Draw();\r\n             *     }\r\n             * }\r\n             * class Triangle: Shape\r\n             * {\r\n             *     public override void Draw() \r\n             *     {\r\n             *         Console.WriteLine(\"\u753b\u4e00\u4e2a\u4e09\u89d2\u5f62\");\r\n             *         base.Draw();\r\n             *     }\r\n             * }\r\n             * class Circle:Shape\r\n             * {\r\n             *     public override void Draw()\r\n             *     {\r\n             *         Console.WriteLine(\"\u753b\u4e00\u4e2a\u5706\u5f62\");\r\n             *         base.Draw();\r\n             *     }\r\n             * }\r\n             * class Program\r\n             * {\r\n             *     static void Main(string&#91;] args)\r\n             *     {\r\n             *         var shapes = new List&lt;Shape>{new Rectangle(),new Triangle(),new Circle()};\r\n             *         foreach(var shape in shapes)\r\n             *         {\r\n             *             shape.Draw();\r\n             *         }\r\n             *         Console.WriteLine(\"\u6309\u4e0b\u4efb\u610f\u952e\u9000\u51fa\u3002\");\r\n             *         Console.ReadKey();\r\n             *     }\r\n             * }\r\n             *\/\r\n\r\n            Console.ReadKey();\r\n        }\r\n    }\r\n    \r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[19],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts\/261"}],"collection":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=261"}],"version-history":[{"count":3,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts\/261\/revisions"}],"predecessor-version":[{"id":285,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts\/261\/revisions\/285"}],"wp:attachment":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=261"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=261"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}