{"id":52138,"date":"2025-08-11T10:37:06","date_gmt":"2025-08-11T02:37:06","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/52138.html"},"modified":"2025-08-11T10:37:06","modified_gmt":"2025-08-11T02:37:06","slug":"c%e9%9d%a2%e8%af%95%e9%a2%98%e5%8f%8a%e8%af%a6%e7%bb%86%e7%ad%94%e6%a1%88100%e9%81%93%ef%bc%88-21-30-%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/52138.html","title":{"rendered":"C++\u9762\u8bd5\u9898\u53ca\u8be6\u7ec6\u7b54\u6848100\u9053\uff08 21-30 \uff09"},"content":{"rendered":"<p>\u300a\u524d\u540e\u7aef\u9762\u8bd5\u9898\u300b\u4e13\u680f\u96c6\u5408\u4e86\u524d\u540e\u7aef\u5404\u4e2a\u77e5\u8bc6\u6a21\u5757\u7684\u9762\u8bd5\u9898&#xff0c;\u5305\u62echtml&#xff0c;javascript&#xff0c;css&#xff0c;vue&#xff0c;react&#xff0c;java&#xff0c;Openlayers&#xff0c;leaflet&#xff0c;cesium&#xff0c;mapboxGL&#xff0c;threejs&#xff0c;nodejs&#xff0c;mangoDB&#xff0c;MySQL&#xff0c;Linux\u2026 \u3002<\/p>\n<p><font size=\"4\"> <\/font><\/p>\n<p> \u524d\u540e\u7aef\u9762\u8bd5\u9898-\u4e13\u680f\u603b\u76ee\u5f55 <\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811023704-68995750bd6af.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e00\u3001\u672c\u6587\u9762\u8bd5\u9898\u76ee\u5f55<\/li>\n<li>\n<ul>\n<li>\n<ul>\n<li>21. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u9ed8\u8ba4\u53c2\u6570&#xff1f;\u4f7f\u7528\u65f6\u9700\u8981\u6ce8\u610f\u4ec0\u4e48&#xff1f;<\/li>\n<li>22. \u89e3\u91caC&#043;&#043;\u4e2d\u7684&#096;volatile&#096;\u5173\u952e\u5b57\u7684\u4f5c\u7528\u3002<\/li>\n<li>23. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u51fd\u6570\u6a21\u677f\u7279\u5316&#xff1f;<\/li>\n<li>24. \u89e3\u91caC&#043;&#043;\u4e2d\u7684&#096;noexcept&#096;\u8bf4\u660e\u7b26\u3002<\/li>\n<li>25. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u59d4\u6258\u6784\u9020\u51fd\u6570&#xff1f;<\/li>\n<li>26. \u89e3\u91caC&#043;&#043;\u4e2d\u7684&#096;override&#096;\u548c&#096;final&#096;\u8bf4\u660e\u7b26\u3002<\/li>\n<li>27. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u62f7\u8d1d\u8d4b\u503c\u8fd0\u7b97\u7b26\u548c\u79fb\u52a8\u8d4b\u503c\u8fd0\u7b97\u7b26&#xff1f;<\/li>\n<li>28. \u89e3\u91caC&#043;&#043;\u4e2d\u7684&#096;constexpr&#096;\u5173\u952e\u5b57\u3002<\/li>\n<li>29. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u4f4d\u57df&#xff08;Bit Fields&#xff09;&#xff1f;<\/li>\n<li>30. \u89e3\u91caC&#043;&#043;\u4e2d\u7684&#096;using&#096;\u58f0\u660e\u548c&#096;using&#096;\u6307\u4ee4\u7684\u533a\u522b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001100\u9053\u9762\u8bd5\u9898\u76ee\u5f55\u5217\u8868<\/li>\n<\/ul>\n<h2>\u4e00\u3001\u672c\u6587\u9762\u8bd5\u9898\u76ee\u5f55<\/h2>\n<h4>21. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u9ed8\u8ba4\u53c2\u6570&#xff1f;\u4f7f\u7528\u65f6\u9700\u8981\u6ce8\u610f\u4ec0\u4e48&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u9ed8\u8ba4\u53c2\u6570\u5141\u8bb8\u51fd\u6570\u5728\u8c03\u7528\u65f6\u7701\u7565\u90e8\u5206\u53c2\u6570&#xff0c;\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u4f7f\u7528\u9884\u5148\u5b9a\u4e49\u7684\u503c\u3002\u9ed8\u8ba4\u53c2\u6570\u5fc5\u987b\u4ece\u53f3\u5411\u5de6\u8fde\u7eed\u5b9a\u4e49&#xff0c;\u4e14\u5728\u51fd\u6570\u58f0\u660e\u6216\u5b9a\u4e49\u4e2d\u53ea\u80fd\u51fa\u73b0\u4e00\u6b21\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u6b63\u786e&#xff1a;\u9ed8\u8ba4\u53c2\u6570\u4ece\u53f3\u5411\u5de6\u8fde\u7eed\u5b9a\u4e49<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> c <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/* &#8230; *\/<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u9519\u8bef&#xff1a;\u9ed8\u8ba4\u53c2\u6570\u4e0d\u8fde\u7eed<\/span><br \/>\n<span class=\"token comment\">\/\/ void func(int a &#061; 1, int b, int c &#061; 3) { \/* &#8230; *\/ }<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ \u7b49\u4ef7\u4e8efunc(10, 2, 3)<\/span><br \/>\n    <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7b49\u4ef7\u4e8efunc(10, 20, 3)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>22. \u89e3\u91caC&#043;&#043;\u4e2d\u7684volatile\u5173\u952e\u5b57\u7684\u4f5c\u7528\u3002<\/h4>\n<p>\u7b54\u6848&#xff1a; volatile\u544a\u8bc9\u7f16\u8bd1\u5668\u8be5\u53d8\u91cf\u53ef\u80fd\u88ab\u610f\u5916\u4fee\u6539&#xff08;\u5982\u786c\u4ef6\u3001\u591a\u7ebf\u7a0b\u73af\u5883&#xff09;&#xff0c;\u7981\u6b62\u7f16\u8bd1\u5668\u5bf9\u5176\u8fdb\u884c\u4f18\u5316\u3002\u5e38\u7528\u4e8e&#xff1a;<\/p>\n<li>\u8bbf\u95ee\u786c\u4ef6\u5bc4\u5b58\u5668\u3002<\/li>\n<li>\u591a\u7ebf\u7a0b\u4e2d\u88ab\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u4fee\u6539\u7684\u53d8\u91cf\u3002<\/li>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">volatile<\/span> <span class=\"token keyword\">int<\/span> sensorValue<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u544a\u8bc9\u7f16\u8bd1\u5668\u4e0d\u8981\u7f13\u5b58\u8be5\u53d8\u91cf\u7684\u503c<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">interruptHandler<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    sensorValue <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">readSensor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u786c\u4ef6\u53ef\u80fd\u968f\u65f6\u4fee\u6539\u8be5\u503c<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>sensorValue <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u6bcf\u6b21\u90fd\u4ece\u5185\u5b58\u8bfb\u53d6&#xff0c;\u4e0d\u4f7f\u7528\u5bc4\u5b58\u5668\u7f13\u5b58<\/span><br \/>\n        <span class=\"token comment\">\/\/ &#8230;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>23. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u51fd\u6570\u6a21\u677f\u7279\u5316&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u51fd\u6570\u6a21\u677f\u7279\u5316\u5141\u8bb8\u4e3a\u7279\u5b9a\u7c7b\u578b\u63d0\u4f9b\u81ea\u5b9a\u4e49\u5b9e\u73b0&#xff0c;\u8986\u76d6\u901a\u7528\u6a21\u677f\u7684\u884c\u4e3a\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u901a\u7528\u6a21\u677f<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\nT <span class=\"token function\">max<\/span><span class=\"token punctuation\">(<\/span>T a<span class=\"token punctuation\">,<\/span> T b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&gt;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">?<\/span> a <span class=\"token operator\">:<\/span> b<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u7279\u5316\u7248\u672c&#xff08;\u9488\u5bf9const char*&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> max<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">strcmp<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">,<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">?<\/span> a <span class=\"token operator\">:<\/span> b<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> x <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">max<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>             <span class=\"token comment\">\/\/ \u4f7f\u7528\u901a\u7528\u6a21\u677f<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> str <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">max<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;abc&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;def&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4f7f\u7528\u7279\u5316\u7248\u672c<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>24. \u89e3\u91caC&#043;&#043;\u4e2d\u7684noexcept\u8bf4\u660e\u7b26\u3002<\/h4>\n<p>\u7b54\u6848&#xff1a; noexcept\u7528\u4e8e\u58f0\u660e\u51fd\u6570\u4e0d\u4f1a\u629b\u51fa\u5f02\u5e38&#xff0c;\u5e2e\u52a9\u7f16\u8bd1\u5668\u4f18\u5316\u4ee3\u7801\u3002\u6709\u4e24\u79cd\u5f62\u5f0f&#xff1a;<\/p>\n<li>noexcept&#xff1a;\u7b49\u4ef7\u4e8enoexcept(true)&#xff0c;\u8868\u793a\u51fd\u6570\u4e0d\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<li>noexcept(expression)&#xff1a;\u6839\u636e\u8868\u8fbe\u5f0f\u7ed3\u679c\u51b3\u5b9a\u662f\u5426\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">noexcept<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u58f0\u660e\u4e0d\u4f1a\u629b\u51fa\u5f02\u5e38<\/span><br \/>\n    <span class=\"token comment\">\/\/ &#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u79fb\u52a8\u6784\u9020\u51fd\u6570\u901a\u5e38\u6807\u8bb0\u4e3anoexcept\u4ee5\u5141\u8bb8\u5bb9\u5668\u4f18\u5316<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span>MyClass<span class=\"token operator\">&amp;&amp;<\/span> other<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">noexcept<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/* &#8230; *\/<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>25. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u59d4\u6258\u6784\u9020\u51fd\u6570&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u59d4\u6258\u6784\u9020\u51fd\u6570\u5141\u8bb8\u4e00\u4e2a\u6784\u9020\u51fd\u6570\u8c03\u7528\u540c\u4e00\u4e2a\u7c7b\u7684\u5176\u4ed6\u6784\u9020\u51fd\u6570&#xff0c;\u907f\u514d\u4ee3\u7801\u91cd\u590d\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> y<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4e3b\u6784\u9020\u51fd\u6570<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">:<\/span> <span class=\"token function\">x<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">y<\/span><span class=\"token punctuation\">(<\/span>b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u59d4\u6258\u6784\u9020\u51fd\u6570<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">:<\/span> <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span> <span class=\"token comment\">\/\/ \u8c03\u7528\u53e6\u4e00\u4e2a\u6784\u9020\u51fd\u6570<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u53e6\u4e00\u4e2a\u59d4\u6258\u6784\u9020\u51fd\u6570<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">:<\/span> <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<table>\n<tr>No.\u5927\u5251\u5e08\u7cbe\u54c1GIS\u6559\u7a0b\u63a8\u8350<\/tr>\n<tbody>\n<tr>\n<td>0<\/td>\n<td align=\"left\">\u5730\u56fe\u6e32\u67d3\u57fa\u7840- \u3010WebGL \u6559\u7a0b\u3011  &#8211;  \u3010Canvas \u6559\u7a0b\u3011  &#8211;  \u3010SVG \u6559\u7a0b\u3011 <\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td align=\"left\">Openlayers \u3010\u5165\u95e8\u6559\u7a0b\u3011  &#8211;  \u3010\u6e90\u4ee3\u7801&#043;\u793a\u4f8b 300&#043;\u3011 <\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td align=\"left\">Leaflet \u3010\u5165\u95e8\u6559\u7a0b\u3011  &#8211;  \u3010\u6e90\u4ee3\u7801&#043;\u56fe\u6587\u793a\u4f8b 150&#043;\u3011 <\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td align=\"left\">MapboxGL\u3010\u5165\u95e8\u6559\u7a0b\u3011  &#8211;  \u3010\u6e90\u4ee3\u7801&#043;\u56fe\u6587\u793a\u4f8b150&#043;\u3011 <\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td align=\"left\">Cesium \u3010\u5165\u95e8\u6559\u7a0b\u3011  &#8211;  \u3010\u6e90\u4ee3\u7801&#043;\u7efc\u5408\u6559\u7a0b 200&#043;\u3011 <\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td align=\"left\">threejs\u3010\u4e2d\u6587API\u3011  &#8211;  \u3010\u6e90\u4ee3\u7801&#043;\u56fe\u6587\u793a\u4f8b200&#043;\u3011 <\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td align=\"left\">Shader \u7f16\u7a0b  \u3010\u56fe\u6587\u793a\u4f8b 100&#043;\u3011 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>26. \u89e3\u91caC&#043;&#043;\u4e2d\u7684override\u548cfinal\u8bf4\u660e\u7b26\u3002<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>override&#xff1a;\u663e\u5f0f\u58f0\u660e\u51fd\u6570\u91cd\u5199\u57fa\u7c7b\u7684\u865a\u51fd\u6570&#xff0c;\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u5e76\u9632\u6b62\u610f\u5916\u9519\u8bef\u3002<\/li>\n<li>final&#xff1a;\u7981\u6b62\u51fd\u6570\u88ab\u91cd\u5199\u6216\u7c7b\u88ab\u7ee7\u627f\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Base<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">virtual<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Derived<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Base<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> override final <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/* &#8230; *\/<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token comment\">\/\/ \u91cd\u5199\u5e76\u7981\u6b62\u8fdb\u4e00\u6b65\u91cd\u5199<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u9519\u8bef&#xff1a;\u65e0\u6cd5\u7ee7\u627ffinal\u7c7b<\/span><br \/>\n<span class=\"token comment\">\/\/ class FurtherDerived : public Derived {};<\/span><\/p>\n<h4>27. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u62f7\u8d1d\u8d4b\u503c\u8fd0\u7b97\u7b26\u548c\u79fb\u52a8\u8d4b\u503c\u8fd0\u7b97\u7b26&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>\u62f7\u8d1d\u8d4b\u503c\u8fd0\u7b97\u7b26&#xff1a;\u901a\u8fc7\u590d\u5236\u5df2\u6709\u5bf9\u8c61\u7684\u503c\u6765\u8d4b\u503c&#xff0c;\u539f\u578b\u4e3aT&amp; operator&#061;(const T&amp;)\u3002<\/li>\n<li>\u79fb\u52a8\u8d4b\u503c\u8fd0\u7b97\u7b26&#xff1a;\u901a\u8fc7\u8f6c\u79fb\u4e34\u65f6\u5bf9\u8c61\u7684\u8d44\u6e90\u6765\u8d4b\u503c&#xff0c;\u539f\u578b\u4e3aT&amp; operator&#061;(T&amp;&amp;)\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span><span class=\"token operator\">*<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u62f7\u8d1d\u8d4b\u503c\u8fd0\u7b97\u7b26<\/span><br \/>\n    MyClass<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> MyClass<span class=\"token operator\">&amp;<\/span> other<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token operator\">&amp;<\/span>other<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n            data <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token operator\">*<\/span>other<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token operator\">*<\/span>data <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">*<\/span>other<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u79fb\u52a8\u8d4b\u503c\u8fd0\u7b97\u7b26<\/span><br \/>\n    MyClass<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span>MyClass<span class=\"token operator\">&amp;&amp;<\/span> other<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">noexcept<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token operator\">&amp;<\/span>other<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n            data <span class=\"token operator\">&#061;<\/span> other<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">;<\/span><br \/>\n            other<span class=\"token punctuation\">.<\/span>data <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">*<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>28. \u89e3\u91caC&#043;&#043;\u4e2d\u7684constexpr\u5173\u952e\u5b57\u3002<\/h4>\n<p>\u7b54\u6848&#xff1a; constexpr\u7528\u4e8e\u58f0\u660e\u7f16\u8bd1\u671f\u5e38\u91cf\u8868\u8fbe\u5f0f&#xff0c;\u5141\u8bb8\u5728\u7f16\u8bd1\u65f6\u8ba1\u7b97\u503c&#xff0c;\u63d0\u9ad8\u6027\u80fd\u3002\u53ef\u4fee\u9970&#xff1a;<\/p>\n<li>\u53d8\u91cf&#xff1a;\u503c\u5728\u7f16\u8bd1\u65f6\u786e\u5b9a\u3002<\/li>\n<li>\u51fd\u6570&#xff1a;\u82e5\u53c2\u6570\u4e3a\u7f16\u8bd1\u671f\u5e38\u91cf&#xff0c;\u5219\u8fd4\u56de\u503c\u4e5f\u4e3a\u7f16\u8bd1\u671f\u5e38\u91cf\u3002<\/li>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">constexpr<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">square<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> x <span class=\"token operator\">*<\/span> x<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">constexpr<\/span> <span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">square<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7f16\u8bd1\u65f6\u8ba1\u7b97<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> arr<span class=\"token punctuation\">[<\/span>a<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5408\u6cd5&#xff1a;a\u662f\u7f16\u8bd1\u671f\u5e38\u91cf<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>29. \u4ec0\u4e48\u662fC&#043;&#043;\u4e2d\u7684\u4f4d\u57df&#xff08;Bit Fields&#xff09;&#xff1f;<\/h4>\n<p>\u7b54\u6848&#xff1a; \u4f4d\u57df\u5141\u8bb8\u5728\u7ed3\u6784\u4f53\u6216\u7c7b\u4e2d\u6309\u4f4d\u5206\u914d\u5185\u5b58&#xff0c;\u7528\u4e8e\u8282\u7701\u7a7a\u95f4&#xff0c;\u7279\u522b\u662f\u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Flags<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">int<\/span> isEnabled <span class=\"token operator\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 1\u4f4d<\/span><br \/>\n    <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">int<\/span> isVisible <span class=\"token operator\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 1\u4f4d<\/span><br \/>\n    <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">int<\/span> priority <span class=\"token operator\">:<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ 3\u4f4d&#xff08;\u53d6\u503c\u8303\u56f40-7&#xff09;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    Flags flags<span class=\"token punctuation\">;<\/span><br \/>\n    flags<span class=\"token punctuation\">.<\/span>isEnabled <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    flags<span class=\"token punctuation\">.<\/span>priority <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5408\u6cd5<\/span><br \/>\n    <span class=\"token comment\">\/\/ flags.priority &#061; 10; \/\/ \u9519\u8bef&#xff1a;\u8d85\u51fa\u8303\u56f4<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>30. \u89e3\u91caC&#043;&#043;\u4e2d\u7684using\u58f0\u660e\u548cusing\u6307\u4ee4\u7684\u533a\u522b\u3002<\/h4>\n<p>\u7b54\u6848&#xff1a;<\/p>\n<ul>\n<li>using\u58f0\u660e&#xff1a;\u5f15\u5165\u7279\u5b9a\u547d\u540d\u7a7a\u95f4\u6210\u5458\u5230\u5f53\u524d\u4f5c\u7528\u57df\u3002<\/li>\n<li>using\u6307\u4ee4&#xff1a;\u5f15\u5165\u6574\u4e2a\u547d\u540d\u7a7a\u95f4\u5230\u5f53\u524d\u4f5c\u7528\u57df\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">namespace<\/span> Math <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">sub<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ using\u58f0\u660e<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">using<\/span> Math<span class=\"token operator\">::<\/span>add<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53ea\u5f15\u5165add<\/span><br \/>\n    <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u76f4\u63a5\u4f7f\u7528add<\/span><br \/>\n    <span class=\"token comment\">\/\/ sub(3, 4); \/\/ \u9519\u8bef&#xff1a;sub\u672a\u88ab\u5f15\u5165<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ using\u6307\u4ee4<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">func2<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> Math<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5f15\u5165\u6574\u4e2a\u547d\u540d\u7a7a\u95f4<\/span><br \/>\n    <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53ef\u7528<\/span><br \/>\n    <span class=\"token function\">sub<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53ef\u7528<\/span><br \/>\n<span class=\"token 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