{"id":51951,"date":"2024-10-08T22:46:14","date_gmt":"2024-10-08T14:46:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/51951\/"},"modified":"2024-11-14T10:41:06","modified_gmt":"2024-11-14T02:41:06","slug":"ubuntu-gcc-%e9%8c%af%e8%aa%a4%ef%bc%9a%e5%b0%8d-log-%e7%ad%89%e5%87%bd%e6%95%b8%e6%9c%aa%e5%ae%9a%e7%be%a9%e7%9a%84%e5%bc%95%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/51951\/","title":{"rendered":"Ubuntu gcc \u932f\u8aa4\uff1a\u5c0d &#8216;log&#8217; \u7b49\u51fd\u6578\u672a\u5b9a\u7fa9\u7684\u5f15\u7528"},"content":{"rendered":"<h1 id=\"ubuntu-gcc-%e9%8c%af%e8%aa%a4%ef%bc%9a%e5%b0%8d-log-%e7%ad%89%e5%87%bd%e6%95%b8%e6%9c%aa%e5%ae%9a%e7%be%a9%e7%9a%84%e5%bc%95%e7%94%a8-CHVvonaDcF\">Ubuntu gcc \u932f\u8aa4\uff1a\u5c0d &#8216;log&#8217; \u7b49\u51fd\u6578\u672a\u5b9a\u7fa9\u7684\u5f15\u7528<\/h1>\n<p>\u5728\u4f7f\u7528 Ubuntu \u7cfb\u7d71\u9032\u884c C \u6216 C++ \u7a0b\u5f0f\u958b\u767c\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4e00\u500b\u5e38\u898b\u7684\u932f\u8aa4\uff1a\u5c0d &#8216;log&#8217; \u7b49\u51fd\u6578\u672a\u5b9a\u7fa9\u7684\u5f15\u7528\u3002\u9019\u500b\u554f\u984c\u901a\u5e38\u767c\u751f\u5728\u7de8\u8b6f\u904e\u7a0b\u4e2d\uff0c\u7279\u5225\u662f\u7576\u4f7f\u7528 GCC \u7de8\u8b6f\u5668\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-CHVvonaDcF\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>\u7576\u4f60\u5728\u7de8\u8b6f C \u6216 C++ \u7a0b\u5f0f\u6642\uff0c\u82e5\u51fa\u73fe\u985e\u4f3c\u4ee5\u4e0b\u7684\u932f\u8aa4\u4fe1\u606f\uff1a<\/p>\n<pre><code>undefined reference to 'log'<\/code><\/pre>\n<p>\u9019\u901a\u5e38\u8868\u793a\u7de8\u8b6f\u5668\u7121\u6cd5\u627e\u5230\u6240\u9700\u7684\u6578\u5b78\u51fd\u6578\u5b9a\u7fa9\u3002&#8217;log&#8217; \u51fd\u6578\u662f C \u6a19\u6e96\u5eab\u4e2d\u7684\u6578\u5b78\u51fd\u6578\u4e4b\u4e00\uff0c\u901a\u5e38\u9700\u8981\u93c8\u63a5\u6578\u5b78\u5eab\uff08libm\uff09\u3002\u5982\u679c\u672a\u6b63\u78ba\u93c8\u63a5\uff0c\u5247\u6703\u5c0e\u81f4\u9019\u7a2e\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-CHVvonaDcF\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u958b\u767c\u8005\u9700\u8981\u5728\u7de8\u8b6f\u6642\u660e\u78ba\u544a\u8a34 GCC \u4f7f\u7528\u6578\u5b78\u5eab\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5728\u547d\u4ee4\u884c\u4e2d\u6dfb\u52a0 -lm \u53c3\u6578\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u5177\u9ad4\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-1%ef%bc%9a%e7%b7%a8%e5%af%ab%e7%b0%a1%e5%96%ae%e7%9a%84-c-%e7%a8%8b%e5%bc%8f-CHVvonaDcF\">\u6b65\u9a5f 1\uff1a\u7de8\u5beb\u7c21\u55ae\u7684 C \u7a0b\u5f0f<\/h3>\n<p>\u9996\u5148\uff0c\u5275\u5efa\u4e00\u500b\u7c21\u55ae\u7684 C \u7a0b\u5f0f\uff0c\u4f7f\u7528 &#8216;log&#8217; \u51fd\u6578\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>#include &lt;stdio.h&gt;\n#include &lt;math.h&gt;\n\nint main() {\n    double value = 10.0;\n    double result = log(value);\n    printf(\"log(%f) = %fn\", value, result);\n    return 0;\n}<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-2%ef%bc%9a%e7%b7%a8%e8%ad%af%e7%a8%8b%e5%bc%8f-CHVvonaDcF\">\u6b65\u9a5f 2\uff1a\u7de8\u8b6f\u7a0b\u5f0f<\/h3>\n<p>\u5728\u7d42\u7aef\u4e2d\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u7de8\u8b6f\u7a0b\u5f0f\uff1a<\/p>\n<pre><code>gcc -o my_program my_program.c<\/code><\/pre>\n<p>\u5982\u679c\u4e0d\u52a0 -lm\uff0c\u5247\u6703\u51fa\u73fe\u672a\u5b9a\u7fa9\u7684\u5f15\u7528\u932f\u8aa4\u3002\u70ba\u4e86\u6b63\u78ba\u7de8\u8b6f\uff0c\u61c9\u4f7f\u7528\uff1a<\/p>\n<pre><code>gcc -o my_program my_program.c -lm<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-3%ef%bc%9a%e9%81%8b%e8%a1%8c%e7%a8%8b%e5%bc%8f-CHVvonaDcF\">\u6b65\u9a5f 3\uff1a\u904b\u884c\u7a0b\u5f0f<\/h3>\n<p>\u7de8\u8b6f\u6210\u529f\u5f8c\uff0c\u53ef\u4ee5\u904b\u884c\u7a0b\u5f0f\uff1a<\/p>\n<pre><code>.\/my_program<\/code><\/pre>\n<p>\u9019\u6a23\u5c31\u80fd\u6b63\u78ba\u986f\u793a &#8216;log&#8217; \u51fd\u6578\u7684\u8a08\u7b97\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e5%85%b6%e4%bb%96%e5%b8%b8%e8%a6%8b%e7%9a%84%e6%95%b8%e5%ad%b8%e5%87%bd%e6%95%b8%e9%8c%af%e8%aa%a4-CHVvonaDcF\">\u5176\u4ed6\u5e38\u898b\u7684\u6578\u5b78\u51fd\u6578\u932f\u8aa4<\/h2>\n<p>\u9664\u4e86 &#8216;log&#8217; \u51fd\u6578\uff0c\u958b\u767c\u8005\u5728\u4f7f\u7528\u5176\u4ed6\u6578\u5b78\u51fd\u6578\u6642\u4e5f\u53ef\u80fd\u9047\u5230\u985e\u4f3c\u7684\u554f\u984c\uff0c\u4f8b\u5982 &#8216;sin&#8217;\u3001&#8217;cos&#8217;\u3001&#8217;sqrt&#8217; \u7b49\u3002\u9019\u4e9b\u51fd\u6578\u540c\u6a23\u9700\u8981\u93c8\u63a5\u6578\u5b78\u5eab\uff0c\u56e0\u6b64\u5728\u7de8\u8b6f\u6642\u4e5f\u9700\u8981\u52a0\u4e0a -lm \u53c3\u6578\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CHVvonaDcF\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Ubuntu \u7cfb\u7d71\u4e2d\u4f7f\u7528 GCC \u7de8\u8b6f C \u6216 C++ \u7a0b\u5f0f\u6642\uff0c\u5c0d &#8216;log&#8217; \u7b49\u51fd\u6578\u672a\u5b9a\u7fa9\u7684\u5f15\u7528\u932f\u8aa4\u901a\u5e38\u662f\u56e0\u70ba\u672a\u93c8\u63a5\u6578\u5b78\u5eab\u3002\u901a\u904e\u5728\u7de8\u8b6f\u547d\u4ee4\u4e2d\u6dfb\u52a0 -lm \u53c3\u6578\uff0c\u53ef\u4ee5\u8f15\u9b06\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u7684\u7de8\u8b6f\u77e5\u8b58\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u80fd\u5920\u5e6b\u52a9\u4ed6\u5011\u66f4\u6709\u6548\u5730\u9032\u884c\u7a0b\u5f0f\u958b\u767c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f\u500b\u4eba\u9805\u76ee\u9084\u662f\u5546\u696d\u61c9\u7528\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a Ubuntu \u4e2d gcc \u932f\u8aa4\uff1a\u5c0d &#8216;log&#8217; \u7b49\u51fd\u6578\u672a\u5b9a\u7fa9\u7684\u5f15\u7528\uff0c\u4e86\u89e3\u5e38\u898b\u539f\u56e0\u53ca\u4fee\u6b63\u65b9\u6cd5\uff0c\u63d0\u5347\u7de8\u8b6f\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-51951","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/51951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=51951"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/51951\/revisions"}],"predecessor-version":[{"id":51952,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/51951\/revisions\/51952"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=51951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=51951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=51951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}