{"id":3489,"date":"2025-04-13T12:58:10","date_gmt":"2025-04-13T04:58:10","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3489"},"modified":"2025-04-13T12:58:10","modified_gmt":"2025-04-13T04:58:10","slug":"c-%e8%bf%90%e7%ae%97%e7%ac%a6%ef%bc%88operators%ef%bc%89%e5%85%a8%e9%9d%a2%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/04\/13\/c-%e8%bf%90%e7%ae%97%e7%ac%a6%ef%bc%88operators%ef%bc%89%e5%85%a8%e9%9d%a2%e8%af%a6%e8%a7%a3\/","title":{"rendered":"C# \u8fd0\u7b97\u7b26\uff08Operators\uff09\u5168\u9762\u8be6\u89e3"},"content":{"rendered":"\n

\u672c\u7ae0\u8282\u4f1a\u4ece\u4e13\u4e1a\u5f00\u53d1\u5de5\u7a0b\u5e08\u7684\u89d2\u5ea6\uff0c\u4ece\u8bed\u8a00\u89c4\u8303\u3001\u5206\u7c7b\u3001\u4f7f\u7528\u65b9\u5f0f\u3001\u793a\u4f8b\u4ee3\u7801\u3001\u6ce8\u610f\u4e8b\u9879\u3001\u5b98\u65b9\u6587\u6863\u94fe\u63a5<\/strong>\u7b49\u7ef4\u5ea6\uff0c\u5168\u9762\u8be6\u89e3 C# \u8fd0\u7b97\u7b26<\/strong>\uff0c\u5e76\u63d0\u4f9b\u591a\u79cd\u5e94\u7528\u573a\u666f\u548c\u5b9e\u8df5\u5efa\u8bae\u3002<\/p>\n\n\n\n

\n\n\n\n

\u4e00\u3001\u4ec0\u4e48\u662f\u8fd0\u7b97\u7b26\uff1f<\/h2>\n\n\n\n

\u8fd0\u7b97\u7b26\u662f\u5bf9\u53d8\u91cf\u6216\u503c\u6267\u884c\u8fd0\u7b97\u7684\u7b26\u53f7\u3002\u5728 C# \u4e2d\uff0c\u8fd0\u7b97\u7b26\u6309\u529f\u80fd\u5212\u5206\u4e3a\u4e0d\u540c\u7c7b\u522b\uff0c\u4f8b\u5982\u7b97\u672f\u8fd0\u7b97\u7b26\u3001\u6bd4\u8f83\u8fd0\u7b97\u7b26\u3001\u903b\u8f91\u8fd0\u7b97\u7b26\u3001\u8d4b\u503c\u8fd0\u7b97\u7b26\u3001\u4f4d\u8fd0\u7b97\u7b26<\/strong>\u7b49\u3002<\/p>\n\n\n\n

\n

\u53c2\u8003\u6587\u6863\uff1a
\ud83d\udd17 Microsoft Docs – C# Operators and Expressions<\/a><\/p>\n<\/blockquote>\n\n\n\n

\n\n\n\n

\u4e8c\u3001C# \u8fd0\u7b97\u7b26\u5206\u7c7b\u603b\u89c8<\/h2>\n\n\n\n
\u7c7b\u578b<\/th>\u793a\u4f8b<\/th>\u8bf4\u660e<\/th><\/tr><\/thead>
\u7b97\u672f\u8fd0\u7b97\u7b26<\/td>+<\/code>, -<\/code>, *<\/code>, \/<\/code>, %<\/code><\/td>\u52a0\u3001\u51cf\u3001\u4e58\u3001\u9664\u3001\u53d6\u4f59<\/td><\/tr>
\u8d4b\u503c\u8fd0\u7b97\u7b26<\/td>=<\/code>, +=<\/code>, -=<\/code>, *=<\/code>, \/=<\/code><\/td>\u8d4b\u503c\u4e0e\u7b80\u5199\u8d4b\u503c<\/td><\/tr>
\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/td>==<\/code>, !=<\/code>, <<\/code>, ><\/code>, <=<\/code><\/td>\u6bd4\u8f83\u4e24\u4e2a\u503c<\/td><\/tr>
\u903b\u8f91\u8fd0\u7b97\u7b26<\/td>&&<\/code>, ||<\/code>, !<\/code><\/td>\u4e0e\u3001\u6216\u3001\u975e<\/td><\/tr>
\u4f4d\u8fd0\u7b97\u7b26<\/td>&<\/code>, |<\/code>, ^<\/code>, ~<\/code>, <<<\/code>, >><\/code><\/td>\u4f4d\u7ea7\u522b\u7684\u8fd0\u7b97<\/td><\/tr>
\u9012\u589e\/\u9012\u51cf\u8fd0\u7b97\u7b26<\/td>++<\/code>, --<\/code><\/td>\u81ea\u589e\u3001\u81ea\u51cf<\/td><\/tr>
\u6761\u4ef6\uff08\u4e09\u5143\uff09\u8fd0\u7b97\u7b26<\/td>?:<\/code><\/td>\u6761\u4ef6\u5224\u65ad\u8868\u8fbe\u5f0f<\/td><\/tr>
\u7a7a\u5408\u5e76\u8fd0\u7b97\u7b26<\/td>??<\/code>, ??=<\/code><\/td>null \u503c\u5904\u7406<\/td><\/tr>
\u7c7b\u578b\u68c0\u67e5\u4e0e\u8f6c\u6362<\/td>is<\/code>, as<\/code>, typeof<\/code>, sizeof<\/code>, cast<\/code><\/td>\u7c7b\u578b\u5224\u65ad\u4e0e\u8f6c\u6362<\/td><\/tr>
\u5176\u4ed6\u8fd0\u7b97\u7b26<\/td>=><\/code>, ??<\/code>, =><\/code>, []<\/code>, ()<\/code><\/td>\u8868\u8fbe\u5f0f\u3001\u59d4\u6258\u3001\u7d22\u5f15\u5668\u7b49<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

\u4e09\u3001\u5404\u7c7b\u8fd0\u7b97\u7b26\u8be6\u89e3<\/h2>\n\n\n\n

1\ufe0f\u20e3 \u7b97\u672f\u8fd0\u7b97\u7b26\uff08Arithmetic\uff09<\/h3>\n\n\n\n
int a = 10, b = 3;\nConsole.WriteLine(a + b);  \/\/ 13\nConsole.WriteLine(a - b);  \/\/ 7\nConsole.WriteLine(a * b);  \/\/ 30\nConsole.WriteLine(a \/ b);  \/\/ 3\nConsole.WriteLine(a % b);  \/\/ 1<\/code><\/pre>\n\n\n\n
\n\n\n\n
2\ufe0f\u20e3 \u8d4b\u503c\u8fd0\u7b97\u7b26\uff08Assignment\uff09<\/h3>\n\n\n\n
int x = 5;\nx += 3;   \/\/ x = x + 3;\nx *= 2;   \/\/ x = x * 2;<\/code><\/pre>\n\n\n\n
\u652f\u6301\uff1a=<\/code>, +=<\/code>, -=<\/code>, *=<\/code>, \/=<\/code>, %=<\/code>, &=<\/code>, |=<\/code>, ^=<\/code>, <<=<\/code>, >>=<\/code><\/p>\n\n\n\n
\n\n\n\n
3\ufe0f\u20e3 \u6bd4\u8f83\u8fd0\u7b97\u7b26\uff08Comparison\uff09<\/h3>\n\n\n\n
int a = 5, b = 6;\nbool isEqual = (a == b);  \/\/ false\nbool notEqual = (a != b); \/\/ true\nbool greater = (a > b);   \/\/ false<\/code><\/pre>\n\n\n\n
\n\n\n\n
4\ufe0f\u20e3 \u903b\u8f91\u8fd0\u7b97\u7b26\uff08Logical\uff09<\/h3>\n\n\n\n
bool t = true, f = false;\nConsole.WriteLine(t && f); \/\/ false\nConsole.WriteLine(t || f); \/\/ true\nConsole.WriteLine(!t);     \/\/ false<\/code><\/pre>\n\n\n\n
\n\n\n\n
5\ufe0f\u20e3 \u4f4d\u8fd0\u7b97\u7b26\uff08Bitwise\uff09<\/h3>\n\n\n\n
int a = 5;   \/\/ 0101\nint b = 3;   \/\/ 0011\nConsole.WriteLine(a & b); \/\/ 0001 => 1\nConsole.WriteLine(a | b); \/\/ 0111 => 7\nConsole.WriteLine(a ^ b); \/\/ 0110 => 6\nConsole.WriteLine(~a);    \/\/ \u53d6\u53cd\uff0c\u7ed3\u679c\u4f9d\u8d56\u4e8e\u6574\u578b\u5927\u5c0f\nConsole.WriteLine(a << 1); \/\/ \u5de6\u79fb\uff1a10\nConsole.WriteLine(b >> 1); \/\/ \u53f3\u79fb\uff1a1<\/code><\/pre>\n\n\n\n
\n\n\n\n
6\ufe0f\u20e3 \u6761\u4ef6\u8fd0\u7b97\u7b26\uff08\u4e09\u5143\uff09<\/h3>\n\n\n\n
int score = 90;\nstring grade = score >= 60 ? \"\u53ca\u683c\" : \"\u4e0d\u53ca\u683c\";<\/code><\/pre>\n\n\n\n
\n\n\n\n
7\ufe0f\u20e3 \u7a7a\u5408\u5e76\u8fd0\u7b97\u7b26\uff08Null-Coalescing\uff09<\/h3>\n\n\n\n
string name = null;\nstring displayName = name ?? \"\u533f\u540d\u7528\u6237\"; \/\/ \u5982\u679c name \u4e3a null\uff0c\u5219\u7528\u9ed8\u8ba4\u503c<\/code><\/pre>\n\n\n\n
string? input = null;\ninput ??= \"\u9ed8\u8ba4\u503c\";  \/\/ \u5982\u679c\u4e3a null\uff0c\u5c31\u8d4b\u9ed8\u8ba4\u503c<\/code><\/pre>\n\n\n\n
\n\n\n\n
8\ufe0f\u20e3 \u7c7b\u578b\u8fd0\u7b97\u7b26<\/h3>\n\n\n\n
object obj = \"Hello\";\nif (obj is string) {\n    Console.WriteLine(\"\u662f\u5b57\u7b26\u4e32\");\n}\n\nstring? str = obj as string; \/\/ \u6210\u529f\u5219\u8f6c\u6362\uff0c\u5931\u8d25\u8fd4\u56de null\n\nConsole.WriteLine(typeof(int));        \/\/ System.Int32\nConsole.WriteLine(sizeof(int));        \/\/ 4 (\u4ec5\u9650 unsafe \u6216\u7f16\u8bd1\u65f6\u5e38\u91cf\u7c7b\u578b)<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u56db\u3001\u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7\uff08Precedence\uff09<\/h2>\n\n\n\n
\u9ad8\u4f18\u5148\u7ea7\u5148\u6267\u884c\uff0c\u5e38\u89c1\u89c4\u5219\u5982\u4e0b\uff08\u4ece\u9ad8\u5230\u4f4e\uff09\uff1a<\/p>\n\n\n\n
    \n
  1. ()<\/code> \u62ec\u53f7<\/li>\n\n\n\n
  2. \u4e00\u5143\u8fd0\u7b97\u7b26\uff08++<\/code>, --<\/code>, !<\/code>, ~<\/code>\uff09<\/li>\n\n\n\n
  3. \u4e58\u9664\u53d6\u4f59\uff08*<\/code>, \/<\/code>, %<\/code>\uff09<\/li>\n\n\n\n
  4. \u52a0\u51cf\uff08+<\/code>, -<\/code>\uff09<\/li>\n\n\n\n
  5. \u79fb\u4f4d\uff08<<<\/code>, >><\/code>\uff09<\/li>\n\n\n\n
  6. \u6bd4\u8f83\uff08<<\/code>, ><\/code>, <=<\/code>, >=<\/code>\uff09<\/li>\n\n\n\n
  7. \u76f8\u7b49\uff08==<\/code>, !=<\/code>\uff09<\/li>\n\n\n\n
  8. \u4f4d\u4e0e\u3001\u6216\u3001\u5f02\u6216\uff08&<\/code>, |<\/code>, ^<\/code>\uff09<\/li>\n\n\n\n
  9. \u903b\u8f91\u4e0e\/\u6216\uff08&&<\/code>, ||<\/code>\uff09<\/li>\n\n\n\n
  10. \u6761\u4ef6\u8fd0\u7b97\u7b26\uff08?:<\/code>\uff09<\/li>\n\n\n\n
  11. \u8d4b\u503c\u8fd0\u7b97\u7b26\uff08=<\/code>, +=<\/code>, -=<\/code>\uff09<\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n
    \u4e94\u3001\u81ea\u5b9a\u4e49\u8fd0\u7b97\u7b26\uff08Operator Overloading\uff09<\/h2>\n\n\n\n
    C# \u652f\u6301\u5728\u7c7b\u4e2d\u91cd\u8f7d\u90e8\u5206\u8fd0\u7b97\u7b26\uff1a<\/p>\n\n\n\n
    public class Point {\n    public int X, Y;\n\n    public static Point operator +(Point a, Point b) {\n        return new Point { X = a.X + b.X, Y = a.Y + b.Y };\n    }\n}<\/code><\/pre>\n\n\n\n
    var p1 = new Point { X = 1, Y = 2 };\nvar p2 = new Point { X = 3, Y = 4 };\nvar result = p1 + p2;  \/\/ \u8c03\u7528\u81ea\u5b9a\u4e49\u7684 +<\/code><\/pre>\n\n\n\n
    \ud83d\udcd8 \u5b98\u65b9\u6587\u6863\uff1a
    \ud83d\udd17 Microsoft Docs – Operator Overloading<\/a><\/p>\n\n\n\n
    \n\n\n\n
    \u516d\u3001\u5e38\u89c1\u9519\u8bef\u4e0e\u9677\u9631<\/h2>\n\n\n\n
    \u9519\u8bef<\/th>\u8bf4\u660e<\/th><\/tr><\/thead>
    \/<\/code> \u8fd0\u7b97\u6574\u6570\u9664\u6cd5<\/td>\u7ed3\u679c\u662f\u6574\u6570\uff0c\u8981\u7528\u6d6e\u70b9\u7c7b\u578b\u9632\u6b62\u622a\u65ad<\/td><\/tr>
    ==<\/code> \u4e0e .Equals()<\/code> \u7684\u8bef\u7528<\/td>\u5bf9\u4e8e\u5f15\u7528\u7c7b\u578b\u5efa\u8bae\u4f7f\u7528 .Equals()<\/code><\/td><\/tr>
    as<\/code> \u7528\u4e8e\u503c\u7c7b\u578b<\/td>\u65e0\u6548\uff0c\u503c\u7c7b\u578b\u4e0d\u80fd\u7528 as<\/code><\/td><\/tr>
    \u8fd0\u7b97\u7b26\u91cd\u8f7d\u6ee5\u7528<\/td>\u4f1a\u9020\u6210\u4ee3\u7801\u96be\u4ee5\u7406\u89e3\uff0c\u9700\u5408\u7406\u8bbe\u8ba1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \n\n\n\n
    \u4e03\u3001C# \u8fd0\u7b97\u7b26\u5b8c\u6574\u5b98\u65b9\u6587\u6863\u76ee\u5f55\uff08\u63a8\u8350\u6536\u85cf\uff09<\/h2>\n\n\n\n