{"id":55407,"date":"2025-08-13T22:04:35","date_gmt":"2025-08-13T14:04:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/55407.html"},"modified":"2025-08-13T22:04:35","modified_gmt":"2025-08-13T14:04:35","slug":"%e5%a4%9a%e6%80%81%ef%bc%884%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/55407.html","title":{"rendered":"\u591a\u6001\uff084\uff09"},"content":{"rendered":"<h2>\u4e00\u3001\u6982\u5ff5<\/h2>\n<p>\u591a\u6001\u4f5c\u4e3a\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u53e6\u4e00\u4e2a\u6838\u5fc3\u6982\u5ff5&#xff0c;\u5141\u8bb8\u57fa\u7c7b\u5f15\u7528\u5728\u8fd0\u884c\u65f6\u6839\u636e\u5176\u6307\u5411\u7684\u5b9e\u9645\u5bf9\u8c61\u7c7b\u578b&#xff0c;\u8c03\u7528\u4e0d\u540c\u5b50\u7c7b\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<h4>1. \u9759\u6001\u591a\u6001&#xff08;\u9759\u6001\u65f6\u7ed1\u5b9a&#xff09;<\/h4>\n<p>\u5728\u7f16\u8bd1\u9636\u6bb5\u786e\u5b9a\u5177\u4f53\u8c03\u7528\u7684\u65b9\u6cd5&#xff0c;\u7ed1\u5b9a\u53d1\u751f\u5728\u7f16\u8bd1\u671f\u3002<\/p>\n<p>\u4e3b\u8981\u4f9d\u9760\u51fd\u6570\u91cd\u8f7d\u548c\u8fd0\u7b97\u7b26\u91cd\u8f7d\u6765\u5b9e\u73b0\u3002<\/p>\n<h5><\/h5>\n<h5>&#xff08;1&#xff09;\u51fd\u6570\u91cd\u8f7d&#xff08;Function Overloading)&#xff1a;<\/h5>\n<p>\u5728\u540c\u4e00\u4e2a\u4f5c\u7528\u57df\u4e2d&#xff08;\u901a\u5e38\u662f\u4e00\u4e2a\u7c7b\u5185\u90e8&#xff09;&#xff0c;\u5141\u8bb8\u591a\u4e2a\u65b9\u6cd5\u5171\u4eab\u76f8\u540c\u7684\u540d\u79f0&#xff0c;\u4f46\u8fd9\u4e9b\u65b9\u6cd5\u5fc5\u987b\u5177\u6709\u4e0d\u540c\u7684\u53c2\u6570\u5217\u8868\u3002\u7f16\u8bd1\u5668\u6839\u636e\u8c03\u7528\u65f6\u63d0\u4f9b\u7684\u5b9e\u9645\u53c2\u6570\u6570\u91cf\u3001\u7c7b\u578b\u548c\u987a\u5e8f&#xff0c;\u81ea\u52a8\u9009\u62e9\u6700\u5339\u914d\u7684\u65b9\u6cd5\u5b9e\u73b0\u6267\u884c\u3002<\/p>\n<p>\u6570\u91cf\u4e0d\u540c&#xff1a;\u00a0\u4e00\u4e2a\u65b9\u6cd5\u63a5\u53d71\u4e2a\u53c2\u6570&#xff0c;\u53e6\u4e00\u4e2a\u63a5\u53d72\u4e2a\u53c2\u6570&#xff1b;<\/p>\n<p>\u7c7b\u578b\u4e0d\u540c&#xff1a;\u4e00\u4e2a\u65b9\u6cd5\u63a5\u53d7int&#xff0c;\u53e6\u4e00\u4e2a\u63a5\u53d7double&#xff1b;<\/p>\n<p>\u987a\u5e8f\u4e0d\u540c&#xff1a;\u00a0\u4e00\u4e2a\u65b9\u6cd5\u63a5\u53d7(int, string)&#xff0c;\u53e6\u4e00\u4e2a\u63a5\u53d7(string, int)&#xff08;\u6ce8\u610f&#xff1a;\u4ec5\u5f53\u7c7b\u578b\u7ec4\u5408\u80fd\u660e\u786e\u533a\u5206\u65f6\u624d\u6709\u610f\u4e49&#xff09;\u3002<\/p>\n<h6>eg&#xff1a;<\/h6>\n<p>using System;<\/p>\n<p>namespace Function<br \/>\n{<br \/>\n\u00a0 \u00a0 public class Calculator<br \/>\n\u00a0 \u00a0 {<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u529f\u80fd1&#xff1a;\u5904\u7406\u6574\u6570\u76f8\u52a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0public int Add(int a, int b)<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 {<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u8fd4\u56de\u8ba1\u7b97\u7ed3\u679c<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return a &#043; b;<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 }<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u529f\u80fd2&#xff1a;\u5904\u7406\u6d6e\u70b9\u6570\u548c\u6574\u6570\u76f8\u52a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0public double Add(int a, double b)<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 {<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 return a &#043; b;<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 }<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u529f\u80fd3&#xff1a;\u5904\u7406\u4e09\u4e2a\u6570\u76f8\u52a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0public int Add(int a, int b, int c)<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 {<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 return a &#043; b &#043; c;<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 }<br \/>\n\u00a0 \u00a0 }<\/p>\n<p>\u00a0 \u00a0 class Program<br \/>\n\u00a0 \u00a0 {<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 static void Main()<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 {<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Calculator calc &#061; new Calculator();<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u4e24\u4e2a\u6574\u6570\u76f8\u52a0\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int num1 &#061; 2, num2 &#061; 3;<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 int result1 &#061; calc.Add(num1, num2);<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Console.WriteLine($&#034;\u6574\u6570\u76f8\u52a0: {num1} &#043; {num2} &#061; {result1}&#034;);<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u4e00\u4e2a\u5c0f\u6570\u548c\u4e00\u4e2a\u6574\u6570\u76f8\u52a0\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0int a1 &#061; 1;<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 double d2 &#061; 2.5;<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 double result2 &#061; calc.Add(a1, d2);<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Console.WriteLine($&#034;\u5c0f\u6570\u76f8\u52a0: {a1} &#043; {d2} &#061; {result2}&#034;);<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ \u4e09\u4e2a\u6574\u6570\u76f8\u52a0\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int n1 &#061; 1, n2 &#061; 2, n3 &#061; 3;<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 int result3 &#061; calc.Add(n1, n2, n3);<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Console.WriteLine($&#034;\u4e09\u4e2a\u6570\u76f8\u52a0: {n1} &#043; {n2} &#043; {n3} &#061; {result3}&#034;);<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Console.ReadKey();<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 }<br \/>\n\u00a0 \u00a0 }<br \/>\n}<\/p>\n<h5><\/h5>\n<h5>&#xff08;2&#xff09;\u8fd0\u7b97\u7b26\u91cd\u8f7d&#xff08;Operator Overloading)&#xff1a;<\/h5>\n<p>\u5141\u8bb8\u4e3a\u81ea\u5b9a\u4e49\u7c7b\u578b&#xff08;\u7c7b\u6216\u7ed3\u6784\u4f53&#xff09;\u91cd\u65b0\u5b9a\u4e49\u5185\u7f6e\u8fd0\u7b97\u7b26&#xff08;\u5982\u00a0&#043;,\u00a0&#061;&#061;,\u00a0&gt;\u00a0\u7b49&#xff09;\u7684\u8bed\u4e49\u3002\u901a\u8fc7\u9759\u6001\u65b9\u6cd5\u5b9e\u73b0&#xff0c;\u7f16\u8bd1\u5668\u6839\u636e\u64cd\u4f5c\u6570\u7684\u7c7b\u578b\u5728\u7f16\u8bd1\u65f6\u7ed1\u5b9a\u5230\u81ea\u5b9a\u4e49\u5b9e\u73b0\u3002<\/p>\n<h6>\u8bed\u6cd5:<\/h6>\n<p> <span style=\"color:#fe2c24\">public static [\u8fd4\u56de\u7c7b\u578b] operator [\u8fd0\u7b97\u7b26\u7b26\u53f7] (\u64cd\u4f5c\u6570\u53c2\u6570)<br \/>\n{<br \/>\n    return new [\u8fd4\u56de\u7c7b\u578b]            \/\/\u8fd4\u56de\u65b0\u5bf9\u8c61\u4e3a\u4e86\u907f\u514d\u4fee\u6539\u539f\u59cb\u503c<br \/>\n}<\/span><\/p>\n<h6><span style=\"color:#0d0016\">eg&#xff1a;<\/span><\/h6>\n<p>using System;<\/p>\n<p>namespace Example<br \/>\n{<br \/>\n    public struct Complex<br \/>\n    {<br \/>\n        public double Real { get; }<br \/>\n        public double Imaginary { get; }<\/p>\n<p>   \/\/\u6784\u9020\u51fd\u6570 \u521b\u5efa\u65b0\u7684\u590d\u6570\u5bf9\u8c61<br \/>\n    public Complex(double real, double imaginary)<br \/>\n        {<br \/>\n            Real &#061; real;<br \/>\n            Imaginary &#061; imaginary;<br \/>\n        }<\/p>\n<p>        \/\/ \u6838\u5fc3&#xff1a;\u8fd0\u7b97\u7b26\u91cd\u8f7d<br \/>\n        public static Complex operator &#043;(Complex a, Complex b)<br \/>\n        {<br \/>\n            return new Complex(a.Real &#043; b.Real, a.Imaginary &#043; b.Imaginary);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    class Program<br \/>\n    {<br \/>\n        static void Main(string[]args)<br \/>\n        {<br \/>\n            \/\/ \u521b\u5efa\u4e24\u4e2a\u590d\u6570<br \/>\n            Complex c1 &#061; new Complex(3, 4);<br \/>\n            Complex c2 &#061; new Complex(1, 2);<\/p>\n<p>            \/\/ \u4f7f\u7528\u91cd\u8f7d\u7684 &#043; \u8fd0\u7b97\u7b26<br \/>\n            Complex result &#061; c1 &#043; c2;<\/p>\n<p>            \/\/ \u76f4\u63a5\u8f93\u51fa\u5c5e\u6027\u503c<br \/>\n            Console.WriteLine($&#034;\u7ed3\u679c: {result.Real} &#043; {result.Imaginary}i&#034;);<br \/>\n            Console.ReadKey();<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p><span style=\"color:#4da8ee\">\u901a\u8fc7\u00a0new\u00a0\u8fd0\u7b97\u7b26\u8c03\u7528\u6784\u9020\u51fd\u6570\u521b\u5efa\u590d\u6570\u5bf9\u8c61c1\u548cc2&#xff0c;\u7136\u540e\u4f7f\u7528\u91cd\u8f7d\u540e\u7684\u201c&#043;\u201d\u8fd0\u7b97&#xff0c;\u4f7f\u4e24\u4e2a\u5bf9\u8c61\u6309\u7167\u91cd\u8f7d\u51fd\u6570\u4e2d\u7684\u8fd0\u7b97\u8fdb\u884c&#xff0c;\u6700\u7ec8\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u590d\u6570\u5bf9\u8c61\u3002<\/span><\/p>\n<h4><\/h4>\n<h4><\/h4>\n<h4>2. \u52a8\u6001\u591a\u6001&#xff08;\u8fd0\u884c\u65f6\u7ed1\u5b9a&#xff09;<\/h4>\n<p>\u5728\u7a0b\u5e8f\u8fd0\u884c\u9636\u6bb5\u624d\u80fd\u786e\u5b9a\u5177\u4f53\u8c03\u7528\u54ea\u4e2a\u51fd\u6570\u5b9e\u73b0\u7684\u591a\u6001\u3002\u4e3b\u8981\u901a\u8fc7\u7ee7\u627f\u548c\u865a\u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n<h6>eg&#xff1a;<\/h6>\n<p>using System;<\/p>\n<p>namespace RuntimePolymorphismDemo<br \/>\n{<br \/>\n    public class Vehicle<br \/>\n    {<br \/>\n        public virtual void StartEngine()<br \/>\n        {<br \/>\n            Console.WriteLine(&#034;\u8f66\u8f86\u542f\u52a8&#xff1a;\u9ed8\u8ba4\u70b9\u706b\u65b9\u5f0f&#034;);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    public class Car : Vehicle<br \/>\n    {<br \/>\n        public override void StartEngine()<br \/>\n        {<br \/>\n            Console.WriteLine(&#034;\u8f7f\u8f66\u542f\u52a8&#xff1a;\u94a5\u5319\u70b9\u706b | \u5b89\u9759\u65e0\u58f0&#034;);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    public class Truck : Vehicle<br \/>\n    {<br \/>\n        public override void StartEngine()<br \/>\n        {<br \/>\n            Console.WriteLine(&#034;\u5361\u8f66\u542f\u52a8&#xff1a;\u6c14\u538b\u542f\u52a8 | \u8f70\u9e23\u58f0&#034;);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    public class ElectricCar : Vehicle<br \/>\n    {<br \/>\n        \/\/ \u6545\u610f\u4e0d\u91cd\u5199&#xff0c;\u5c55\u793a\u7ee7\u627f\u9ed8\u8ba4\u884c\u4e3a<br \/>\n    }<\/p>\n<p>    class Program<br \/>\n    {<br \/>\n        static void Main(string[] args)<br \/>\n        {<br \/>\n            \/\/ \u591a\u6001\u96c6\u5408&#xff1a;\u7edf\u4e00\u7528\u57fa\u7c7b\u5f15\u7528\u5b58\u653e\u4e0d\u540c\u5b50\u7c7b<br \/>\n            Vehicle[] garage &#061; {<br \/>\n                new Car(),<br \/>\n                new Truck(),<br \/>\n                new ElectricCar()<br \/>\n            };<\/p>\n<p>            \/\/ \u591a\u6001\u8c03\u7528&#xff1a;\u81ea\u52a8\u9009\u62e9\u6b63\u786e\u5b9e\u73b0<br \/>\n            foreach (Vehicle v in garage)<br \/>\n            {<br \/>\n                Console.Write($&#034;{v.GetType().Name}\u7684\u542f\u52a8: &#034;);<br \/>\n                v.StartEngine(); \/\/ \u8fd0\u884c\u65f6\u51b3\u5b9a\u8c03\u7528\u54ea\u4e2a\u65b9\u6cd5<br \/>\n            }<\/p>\n<p>            \/* \u8f93\u51fa&#xff1a;<br \/>\n                Car\u7684\u542f\u52a8: \u8f7f\u8f66\u542f\u52a8&#xff1a;\u94a5\u5319\u70b9\u706b | \u5b89\u9759\u65e0\u58f0<br \/>\n                Truck\u7684\u542f\u52a8: \u5361\u8f66\u542f\u52a8&#xff1a;\u6c14\u538b\u542f\u52a8 | \u8f70\u9e23\u58f0<br \/>\n                ElectricCar\u7684\u542f\u52a8: \u8f66\u8f86\u542f\u52a8&#xff1a;\u9ed8\u8ba4\u70b9\u706b\u65b9\u5f0f<br \/>\n            *\/<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p>\u00a0<span style=\"color:#4da8ee\">\u7ee7\u627f\u5173\u7cfb&#xff1a;<\/span>\u5b50\u7c7b\u7ee7\u627f\u7236\u7c7b&#xff0c;\u5b50\u7c7b :\u00a0\u7236\u7c7b<\/p>\n<p><span style=\"color:#4da8ee\">\u00a0<\/span><span style=\"color:#4da8ee\">\u865a\u65b9\u6cd5&#xff1a;<\/span>\u7236\u7c7b\u7528virtual\u58f0\u660e\u53ef\u91cd\u5199\u65b9\u6cd5<\/p>\n<p><span style=\"color:#4da8ee\">\u00a0\u91cd\u5199&#xff1a;<\/span>\u5b50\u7c7b\u7528override\u63d0\u4f9b\u5177\u4f53\u5b9e\u73b0<\/p>\n<p><span style=\"color:#4da8ee\">\u00a0foreach\u00a0\u5faa\u73af&#xff1a;<\/span><\/p>\n<p>foreach (Vehicle v in garage)<br \/>\n{<br \/>\n    \/\/ \u5faa\u73af\u4f53<br \/>\n}<\/p>\n<p>C#\u7684\u5faa\u73af\u7ed3\u6784&#xff0c;\u58f0\u660e\u4e00\u4e2aVehicle\u7c7b\u578b\u540d\u4e3av\u7684\u53d8\u91cf&#xff0c;\u5c06garage\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20&#xff0c;\u4f9d\u6b21\u8d4b\u503c\u7ed9\u53d8\u91cfv&#xff0c;\u7136\u540e\u6267\u884c\u5faa\u73af\u4f53\u3002<\/p>\n<p>\u5b9e\u9645\u8d4b\u503c\u60c5\u51b5&#xff1a;<\/p>\n<p>\/\/ \u7b2c\u4e00\u6b21\u5faa\u73af<br \/>\nv &#061; garage[0]; \/\/ \u5b9e\u9645\u662fCar\u5bf9\u8c61&#xff08;\u5185\u5b58\u5730\u5740\u6307\u5411Car\u5b9e\u4f8b&#xff09;<\/p>\n<p>\/\/ 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