{"id":57527,"date":"2025-08-15T14:21:28","date_gmt":"2025-08-15T06:21:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/57527.html"},"modified":"2025-08-15T14:21:28","modified_gmt":"2025-08-15T06:21:28","slug":"c%e6%99%ba%e8%83%bd%e6%8c%87%e9%92%88%ef%bc%8c%e8%bf%99%e6%a0%b7%e5%9b%9e%e7%ad%94%e8%ae%a9%e4%bd%a0%e7%a7%92%e6%9d%80%e7%ab%9e%e4%ba%89%e5%af%b9%e6%89%8b%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/57527.html","title":{"rendered":"C++\u667a\u80fd\u6307\u9488\uff0c\u8fd9\u6837\u56de\u7b54\u8ba9\u4f60\u79d2\u6740\u7ade\u4e89\u5bf9\u624b\uff01"},"content":{"rendered":"<h2>&#x1f3af; \u5927\u5382\u9762\u8bd5\u5b98\u6700\u7231\u95ee\u7684C&#043;&#043;\u667a\u80fd\u6307\u9488&#xff0c;\u8fd9\u6837\u56de\u7b54\u8ba9\u4f60\u79d2\u6740\u7ade\u4e89\u5bf9\u624b&#xff01;<\/h2>\n<p>\u9762\u8bd5\u5b98\u5fc3\u7406\u5256\u6790&#xff1a;\u667a\u80fd\u6307\u9488\u662f\u73b0\u4ee3C&#043;&#043;\u7684\u6838\u5fc3&#xff0c;\u4e5f\u662f\u533a\u5206\u521d\u7ea7\u548c\u9ad8\u7ea7\u7a0b\u5e8f\u5458\u7684\u5206\u6c34\u5cad\u3002\u9762\u8bd5\u5b98\u901a\u8fc7\u8fd9\u4e2a\u95ee\u9898\u80fd\u5feb\u901f\u5224\u65ad\u4f60\u7684C&#043;&#043;\u529f\u5e95\u548c\u5de5\u7a0b\u5b9e\u8df5\u7ecf\u9a8c\u3002<\/p>\n<h3>&#x1f4a1; \u9ec4\u91d130\u79d2\u56de\u7b54\u6a21\u677f<\/h3>\n<p>\u7b2c\u4e00\u53e5\u8bdd&#xff08;10\u79d2&#xff09;&#xff1a;\u667a\u80fd\u6307\u9488\u662fRAII\u7684\u5178\u578b\u5e94\u7528&#xff0c;\u901a\u8fc7\u5bf9\u8c61\u751f\u547d\u5468\u671f\u81ea\u52a8\u7ba1\u7406\u5185\u5b58&#xff0c;\u89e3\u51b3\u4f20\u7edf\u6307\u9488\u7684\u5185\u5b58\u6cc4\u6f0f\u548c\u91ce\u6307\u9488\u95ee\u9898\u3002<\/p>\n<p>\u7b2c\u4e8c\u53e5\u8bdd&#xff08;10\u79d2&#xff09;&#xff1a;C&#043;&#043;11\u63d0\u4f9b\u4e86unique_ptr\u3001shared_ptr\u3001weak_ptr\u4e09\u79cd&#xff0c;\u5206\u522b\u5bf9\u5e94\u72ec\u5360\u3001\u5171\u4eab\u3001\u5f31\u5f15\u7528\u4e09\u79cd\u6240\u6709\u6743\u6a21\u578b\u3002<\/p>\n<p>\u7b2c\u4e09\u53e5\u8bdd&#xff08;10\u79d2&#xff09;&#xff1a;\u5b9e\u9645\u9879\u76ee\u4e2d\u4f18\u5148\u4f7f\u7528unique_ptr&#xff0c;\u9700\u8981\u5171\u4eab\u65f6\u7528shared_ptr&#xff0c;\u89e3\u51b3\u5faa\u73af\u5f15\u7528\u7528weak_ptr\u3002<\/p>\n<h3>&#x1f50d; \u6df1\u5ea6\u5256\u6790&#xff1a;\u9762\u8bd5\u5b98\u5728\u8003\u5bdf\u4ec0\u4e48&#xff1f;<\/h3>\n<h4>1. RAII\u673a\u5236\u7406\u89e3<\/h4>\n<p>#mermaid-svg-VSHQNQn7wyl2K8RG {font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}#mermaid-svg-VSHQNQn7wyl2K8RG .error-icon{fill:#552222;}#mermaid-svg-VSHQNQn7wyl2K8RG .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-VSHQNQn7wyl2K8RG .edge-thickness-normal{stroke-width:2px;}#mermaid-svg-VSHQNQn7wyl2K8RG .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-VSHQNQn7wyl2K8RG .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-VSHQNQn7wyl2K8RG .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-VSHQNQn7wyl2K8RG .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-VSHQNQn7wyl2K8RG .marker{fill:#333333;stroke:#333333;}#mermaid-svg-VSHQNQn7wyl2K8RG .marker.cross{stroke:#333333;}#mermaid-svg-VSHQNQn7wyl2K8RG svg{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-VSHQNQn7wyl2K8RG .label{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;color:#333;}#mermaid-svg-VSHQNQn7wyl2K8RG .cluster-label text{fill:#333;}#mermaid-svg-VSHQNQn7wyl2K8RG .cluster-label span{color:#333;}#mermaid-svg-VSHQNQn7wyl2K8RG .label text,#mermaid-svg-VSHQNQn7wyl2K8RG span{fill:#333;color:#333;}#mermaid-svg-VSHQNQn7wyl2K8RG .node rect,#mermaid-svg-VSHQNQn7wyl2K8RG .node circle,#mermaid-svg-VSHQNQn7wyl2K8RG .node ellipse,#mermaid-svg-VSHQNQn7wyl2K8RG .node polygon,#mermaid-svg-VSHQNQn7wyl2K8RG .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-VSHQNQn7wyl2K8RG .node .label{text-align:center;}#mermaid-svg-VSHQNQn7wyl2K8RG .node.clickable{cursor:pointer;}#mermaid-svg-VSHQNQn7wyl2K8RG .arrowheadPath{fill:#333333;}#mermaid-svg-VSHQNQn7wyl2K8RG .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-VSHQNQn7wyl2K8RG .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-VSHQNQn7wyl2K8RG .edgeLabel{background-color:#e8e8e8;text-align:center;}#mermaid-svg-VSHQNQn7wyl2K8RG .edgeLabel rect{opacity:0.5;background-color:#e8e8e8;fill:#e8e8e8;}#mermaid-svg-VSHQNQn7wyl2K8RG .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-VSHQNQn7wyl2K8RG .cluster text{fill:#333;}#mermaid-svg-VSHQNQn7wyl2K8RG .cluster span{color:#333;}#mermaid-svg-VSHQNQn7wyl2K8RG div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-VSHQNQn7wyl2K8RG :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<span id=\"L-L-A-B\" class=\"edgeLabel L-LS-A&#039; L-LE-B\"><\/span><span id=\"L-L-B-C\" class=\"edgeLabel L-LS-B&#039; L-LE-C\"><\/span><span id=\"L-L-C-D\" class=\"edgeLabel L-LS-C&#039; L-LE-D\"><\/span><span id=\"L-L-D-E\" class=\"edgeLabel L-LS-D&#039; L-LE-E\"><\/span>\u5bf9\u8c61\u6784\u9020\u83b7\u53d6\u8d44\u6e90\u5bf9\u8c61\u4f7f\u7528\u671f\u95f4\u5bf9\u8c61\u6790\u6784\u81ea\u52a8\u91ca\u653e\u8d44\u6e90<\/p>\n<p>\u6838\u5fc3\u601d\u60f3&#xff1a;Resource Acquisition Is Initialization &#8211; \u8d44\u6e90\u83b7\u53d6\u5373\u521d\u59cb\u5316<\/p>\n<h4>2. \u4e09\u79cd\u667a\u80fd\u6307\u9488\u7684\u4f7f\u7528\u573a\u666f<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815061952-689ed1882bab7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>3. \u7ecf\u5178\u9677\u9631\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h4>\n<p>\u9677\u96311&#xff1a;\u5faa\u73af\u5f15\u7528<\/p>\n<p><span class=\"token comment\">\/\/ \u5371\u9669\u4ee3\u7801<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Node<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    shared_ptr<span class=\"token operator\">&lt;<\/span>Node<span class=\"token operator\">&gt;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n    shared_ptr<span class=\"token operator\">&lt;<\/span>Node<span class=\"token operator\">&gt;<\/span> prev<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5faa\u73af\u5f15\u7528&#xff01;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6b63\u786e\u505a\u6cd5<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Node<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    shared_ptr<span class=\"token operator\">&lt;<\/span>Node<span class=\"token operator\">&gt;<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n    weak_ptr<span class=\"token operator\">&lt;<\/span>Node<span class=\"token operator\">&gt;<\/span> prev<span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/\/ \u4f7f\u7528weak_ptr<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u9677\u96312&#xff1a;\u91cd\u590d\u5305\u88c5\u539f\u59cb\u6307\u9488<\/p>\n<p><span class=\"token comment\">\/\/ \u9519\u8bef&#xff01;<\/span><br \/>\n<span class=\"token keyword\">int<\/span><span class=\"token operator\">*<\/span> raw <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 number\">42<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nshared_ptr<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">p1<\/span><span class=\"token punctuation\">(<\/span>raw<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nshared_ptr<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">p2<\/span><span class=\"token punctuation\">(<\/span>raw<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5371\u9669&#xff1a;\u53cc\u91cddelete<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6b63\u786e&#xff01;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token generic-function\"><span class=\"token function\">make_shared<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">42<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> p2 <span class=\"token operator\">&#061;<\/span> p1<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5171\u4eab\u540c\u4e00\u4e2a\u63a7\u5236\u5757<\/span><\/p>\n<h3>&#x1f680; \u8fdb\u9636\u8003\u70b9&#xff1a;\u81ea\u5b9a\u4e49\u5220\u9664\u5668<\/h3>\n<p>\u9762\u8bd5\u5b98\u53ef\u80fd\u4f1a\u95ee&#xff1a;\u201c\u5982\u4f55\u7528\u667a\u80fd\u6307\u9488\u7ba1\u7406\u6570\u7ec4\u6216\u6587\u4ef6\u53e5\u67c4&#xff1f;\u201d<\/p>\n<p><span class=\"token comment\">\/\/ \u81ea\u5b9a\u4e49\u5220\u9664\u5668\u793a\u4f8b<\/span><br \/>\n<span class=\"token keyword\">auto<\/span> file_ptr <span class=\"token operator\">&#061;<\/span> <span class=\"token generic-function\"><span class=\"token function\">unique_ptr<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>FILE<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">decltype<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>fclose<span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><br \/>\n    <span class=\"token function\">fopen<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;data.txt&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;r&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>fclose<br \/>\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">auto<\/span> array_ptr <span class=\"token operator\">&#061;<\/span> <span class=\"token generic-function\"><span class=\"token function\">unique_ptr<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>&#x1f3ad; \u6027\u80fd\u5bf9\u6bd4\u5206\u6790<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250815062050-689ed1c2b9d80.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5173\u952e\u6570\u636e&#xff1a;<\/p>\n<ul>\n<li>unique_ptr&#xff1a;\u51e0\u4e4e\u96f6\u5f00\u9500&#xff0c;\u7f16\u8bd1\u5668\u4f18\u5316\u540e\u4e0e\u539f\u59cb\u6307\u9488\u76f8\u540c<\/li>\n<li>shared_ptr&#xff1a;\u5f15\u7528\u8ba1\u6570\u5f00\u9500&#xff0c;\u7ebf\u7a0b\u5b89\u5168\u7684\u539f\u5b50\u64cd\u4f5c<\/li>\n<li>weak_ptr&#xff1a;\u9700\u8981\u68c0\u67e5\u5bf9\u8c61\u662f\u5426\u8fd8\u5b58\u5728\u7684\u989d\u5916\u5f00\u9500<\/li>\n<\/ul>\n<h3>&#x1f527; \u5b9e\u6218\u4ee3\u7801\u6a21\u5f0f<\/h3>\n<p>\u5de5\u5382\u6a21\u5f0f\u6700\u4f73\u5b9e\u8df5&#xff1a;<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ResourceFactory<\/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\">static<\/span> unique_ptr<span class=\"token operator\">&lt;<\/span>Resource<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">create<\/span><span class=\"token punctuation\">(<\/span>Type type<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token generic-function\"><span class=\"token function\">make_unique<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>Resource<span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>type<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5f02\u5e38\u5b89\u5168<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>PIMPL\u4e60\u60ef\u7528\u6cd5&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ header<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Widget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Impl<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    unique_ptr<span class=\"token operator\">&lt;<\/span>Impl<span class=\"token operator\">&gt;<\/span> pImpl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">Widget<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token operator\">~<\/span><span class=\"token function\">Widget<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5fc5\u987b\u5728cpp\u4e2d\u5b9a\u4e49<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>&#x1f48e; \u9762\u8bd5\u52a0\u5206\u70b9<\/h3>\n<li>\u63d0\u5230make_unique\/make_shared\u7684\u4f18\u52bf&#xff1a;\u5f02\u5e38\u5b89\u5168 &#043; shared_ptr\u6027\u80fd\u4f18\u5316<\/li>\n<li>\u4e86\u89e3\u63a7\u5236\u5757\u673a\u5236&#xff1a;shared_ptr\u7684\u5b9e\u73b0\u7ec6\u8282<\/li>\n<li>\u77e5\u9053C&#043;&#043;14\u7684auto\u8fd4\u56de\u503c\u63a8\u5bfc\u9677\u9631&#xff1a;\u8fd4\u56de\u667a\u80fd\u6307\u9488\u65f6\u8981\u6ce8\u610f\u7c7b\u578b\u63a8\u5bfc<\/li>\n<h3>&#x1f3af; \u5e38\u89c1\u8ffd\u95ee\u53ca\u5e94\u5bf9\u7b56\u7565<\/h3>\n<p>Q: shared_ptr\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u5417&#xff1f;<br \/>\nA: \u63a7\u5236\u5757\u7684\u5f15\u7528\u8ba1\u6570\u662f\u7ebf\u7a0b\u5b89\u5168\u7684&#xff0c;\u4f46\u5bf9\u8c61\u672c\u8eab\u7684\u8bbf\u95ee\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n<p>Q: \u4ec0\u4e48\u65f6\u5019\u4e0d\u5e94\u8be5\u4f7f\u7528\u667a\u80fd\u6307\u9488&#xff1f;<br \/>\nA: \u6027\u80fd\u6781\u5176\u654f\u611f\u7684\u573a\u666f\u3001\u4e0eC\u63a5\u53e3\u4ea4\u4e92\u3001\u5df2\u6709\u6210\u719f\u8d44\u6e90\u7ba1\u7406\u673a\u5236\u7684\u60c5\u51b5\u3002<\/p>\n<p>Q: \u5982\u4f55\u5728\u7c7b\u6210\u5458\u4e2d\u4f7f\u7528\u667a\u80fd\u6307\u9488&#xff1f;<br \/>\nA: \u4f18\u5148\u4f7f\u7528\u503c\u8bed\u4e49&#xff0c;\u9700\u8981\u591a\u6001\u65f6\u4f7f\u7528unique_ptr&#xff0c;\u9700\u8981\u5171\u4eab\u65f6\u624d\u7528shared_ptr\u3002<\/p>\n<h3>&#x1f3c6; \u7ec8\u6781\u5efa\u8bae<\/h3>\n<p>\u8bb0\u4f4f\u8fd9\u4e2a\u53e3\u8bc0&#xff1a;\u201c\u80fd\u7528\u503c\u5c31\u4e0d\u7528\u6307\u9488&#xff0c;\u80fd\u7528unique\u5c31\u4e0d\u7528shared&#xff0c;\u80fd\u7528\u6808\u5c31\u4e0d\u7528\u5806\u201d<\/p>\n<p>\u667a\u80fd\u6307\u9488\u4e0d\u662f\u94f6\u5f39&#xff0c;\u800c\u662f\u73b0\u4ee3C&#043;&#043;\u8d44\u6e90\u7ba1\u7406\u7684\u91cd\u8981\u5de5\u5177\u3002\u638c\u63e1\u5176\u539f\u7406\u548c\u6700\u4f73\u5b9e\u8df5&#xff0c;\u4f60\u5c31\u80fd\u5728\u9762\u8bd5\u4e2d\u8131\u9896\u800c\u51fa&#xff01;<\/p>\n<hr \/>\n<p>\u4e0b\u671f\u9884\u544a&#xff1a;\u300a\u5927\u5382\u6700\u7231\u8003\u7684C&#043;&#043;\u591a\u7ebf\u7a0b\u540c\u6b65\u673a\u5236&#xff0c;\u8fd9\u4e9b\u5751\u4f60\u8e29\u8fc7\u51e0\u4e2a&#xff1f;\u300b<\/p>\n<p>\u89c9\u5f97\u6709\u7528\u8bf7\u70b9\u8d5e\u5173\u6ce8&#xff0c;\u8ba9\u66f4\u591a\u7a0b\u5e8f\u5458\u5c11\u8d70\u5f2f\u8def&#xff01; &#x1f680;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb548\u6b21\uff0c\u70b9\u8d5e12\u6b21\uff0c\u6536\u85cf20\u6b21\u3002\u9762\u8bd5\u5b98\u53ef\u80fd\u4f1a\u95ee\uff1a\u201c\u5982\u4f55\u7528\u667a\u80fd\u6307\u9488\u7ba1\u7406\u6570\u7ec4\u6216\u6587\u4ef6\u53e5\u67c4\uff1f\/\/ \u81ea\u5b9a\u4e49\u5220\u9664\u5668\u793a\u4f8b\/\/ \u81ea\u5b9a\u4e49\u5220\u9664\u5668\u793a\u4f8b auto file_ptr = unique_ptr &lt; FILE , decltype(&amp; fclose) &gt;(fopen(&quot;data.txt&quot; , &quot;r&quot;) , &amp; fclose);\/\/ \u81ea\u5b9a\u4e49\u5220\u9664\u5668\u793a\u4f8b auto file_ptr = unique_ptr &lt; FILE , decltype(&amp; fclose) &gt;(fopen(&quot;data.txt&quot; , &quot;r&quot;) , &amp; fclose);<\/p>\n","protected":false},"author":2,"featured_media":57525,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[176],"topic":[],"class_list":["post-57527","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-176"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C++\u667a\u80fd\u6307\u9488\uff0c\u8fd9\u6837\u56de\u7b54\u8ba9\u4f60\u79d2\u6740\u7ade\u4e89\u5bf9\u624b\uff01 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/57527.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C++\u667a\u80fd\u6307\u9488\uff0c\u8fd9\u6837\u56de\u7b54\u8ba9\u4f60\u79d2\u6740\u7ade\u4e89\u5bf9\u624b\uff01 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb548\u6b21\uff0c\u70b9\u8d5e12\u6b21\uff0c\u6536\u85cf20\u6b21\u3002\u9762\u8bd5\u5b98\u53ef\u80fd\u4f1a\u95ee\uff1a\u201c\u5982\u4f55\u7528\u667a\u80fd\u6307\u9488\u7ba1\u7406\u6570\u7ec4\u6216\u6587\u4ef6\u53e5\u67c4\uff1f\/\/ \u81ea\u5b9a\u4e49\u5220\u9664\u5668\u793a\u4f8b\/\/ \u81ea\u5b9a\u4e49\u5220\u9664\u5668\u793a\u4f8b auto file_ptr = unique_ptr &lt; 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