{"id":17312,"date":"2023-02-17T12:02:39","date_gmt":"2023-02-17T04:02:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=17312"},"modified":"2023-02-17T12:03:02","modified_gmt":"2023-02-17T04:03:02","slug":"doublepf%ef%bc%bb3%ef%bc%bd%e5%92%8cdoublepf%ef%bc%bb3%ef%bc%bd%ef%bc%bb2%ef%bc%bd%e6%9c%89%e4%bb%80%e4%b9%88%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/17312.html","title":{"rendered":"doublepf\uff3b3\uff3d\u548cdouble(pf\uff3b3\uff3d)\uff3b2\uff3d\u6709\u4ec0\u4e48\u533a\u522b"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote\">\n<p>doublepf\uff3b3\uff3d\u548cdouble(pf\uff3b3\uff3d)\uff3b2\uff3d\u7684\u533a\u522b\u662f\uff1a\u4ed6\u4eec\u7684\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b\u4e0d\u540c\u3002double*pf[3] \u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u5305\u542b\u4e86 3 \u4e2a\u6307\u5411 double \u7c7b\u578b\u7684\u6307\u9488\u3002double(*pf[3])[2] \u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u5305\u542b\u4e86 3 \u4e2a\u6307\u5411\u957f\u5ea6\u4e3a 2 \u7684 double \u7c7b\u578b\u6570\u7ec4\u7684\u6307\u9488\u3002<\/p>\n<\/blockquote>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"680\" height=\"421\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/02\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-69-1.jpg?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"\" class=\"wp-image-17314\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/02\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-69-1.jpg 680w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/02\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-69-1-300x186.jpg 300w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001doublepf\uff3b3\uff3d\u548cdouble(pf\uff3b3\uff3d)\uff3b2\uff3d\u7684\u533a\u522b<\/h2>\n\n\n\n<p>double*pf[3] \u548c double(*pf[3])[2] \u662f\u4e24\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u5b83\u4eec\u7684\u533a\u522b\u5728\u4e8e\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b\u4e0d\u540c\u3002<\/p>\n\n\n\n<p>double*pf[3] \u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u5305\u542b\u4e86 3 \u4e2a\u6307\u5411 double \u7c7b\u578b\u7684\u6307\u9488\u3002\u4e5f\u5c31\u662f\u8bf4\uff0cpf \u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u4e2a\u6307\u5411 double \u7c7b\u578b\u7684\u6307\u9488\uff0c\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u6307\u5411\u4e00\u7ef4\u6570\u7ec4\u7684\u9996\u5143\u7d20\u7684\u6307\u9488\u3002\u8fd9\u79cd\u7c7b\u578b\u7684\u6570\u7ec4\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u4e00\u7ec4\u957f\u5ea6\u4e0d\u540c\u7684\u4e00\u7ef4\u6570\u7ec4\u3002<\/p>\n\n\n\n<p>double(*pf[3])[2] 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class=\"wp-block-heading\">\u4e8c\u3001\u4ec0\u4e48\u662f\u6570\u7ec4<\/h2>\n\n\n\n<p>\u6570\u7ec4\u662f\u76f8\u540c\u7c7b\u578b\u6570\u636e\u7684\u6709\u5e8f\u96c6\u5408\u3002\u6570\u7ec4\u63cf\u8ff0\u7684\u662f\u76f8\u540c\u7c7b\u578b\u7684\u82e5\u5e72\u4e2a\u6570\u636e,\u6309\u7167\u4e00\u5b9a\u7684\u5148\u540e\u6b21\u5e8f\u6392\u5217\u7ec4\u5408\u800c\u6210\u3002<\/p>\n\n\n\n<p>\u5176\u4e2d,\u6bcf\u4e00\u4e2a\u6570\u636e\u79f0\u4f5c\u4e00\u4e2a\u6570\u7ec4\u5143\u7d20,\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u4e0b\u6807\u6765\u8bbf\u95ee\u5b83\u4eec\u3002<\/p>\n\n\n\n<p>\u6570\u7ec4\u7684\u57fa\u672c\u7279\u70b9\uff1a\u5176\u957f\u5ea6\u662f\u786e\u5b9a\u7684\u3002\u6570\u7ec4\u4e00\u65e6\u88ab\u521b\u5efa\uff0c\u5b83\u7684\u5927\u5c0f\u5c31\u662f\u4e0d\u53ef\u4ee5\u6539\u53d8\u7684\u3002\u5176\u5143\u7d20\u5fc5\u987b\u662f\u76f8\u540c\u7c7b\u578b,\u4e0d\u5141\u8bb8\u51fa\u73b0\u6df7\u5408\u7c7b\u578b\u3002<\/p>\n\n\n\n<p>\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u662f\u4efb\u4f55\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u57fa\u672c\u7c7b\u578b\u548c\u5f15\u7528\u7c7b\u578b\u3002<\/p>\n\n\n\n<p>\u6570\u7ec4\u53d8\u91cf\u5c5e\u5f15\u7528\u7c7b\u578b\uff0c\u6570\u7ec4\u4e5f\u53ef\u4ee5\u770b\u6210\u662f\u5bf9\u8c61\uff0c\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u76f8\u5f53\u4e8e\u8be5\u5bf9\u8c61\u7684\u6210\u5458\u53d8\u91cf\u3002\u6570\u7ec4\u672c\u8eab\u5c31\u662f\u5bf9\u8c61\uff0cJava\u4e2d\u5bf9\u8c61\u662f\u5728\u5806\u4e2d\u7684\uff0c\u56e0\u6b64\u6570\u7ec4\u65e0\u8bba\u4fdd\u5b58\u539f\u59cb\u7c7b\u578b\u8fd8\u662f\u5176\u4ed6\u5bf9\u8c61\u7c7b\u578b\uff0c\u6570\u7ec4\u5bf9\u8c61\u672c\u8eab\u662f\u5728\u5806\u4e2d\u7684\u3002<br><\/p>\n\n\n\n<p>\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8edoublepf\uff3b3\uff3d\u548cdouble(pf\uff3b3\uff3d)\uff3b2\uff3d\u7684\u533a\u522b\u7684\u5185\u5bb9\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"doublepf\uff3b3\uff3d\u548cdouble(pf\uff3b3\uff3d)\uff3b2\uff3d\u7684\u533a\u522b\u662f\uff1a\u4ed6\u4eec\u7684\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b\u4e0d\u540c\u3002double*pf 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