{"id":44798,"date":"2024-10-06T18:14:13","date_gmt":"2024-10-06T10:14:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44798\/"},"modified":"2024-10-06T18:14:13","modified_gmt":"2024-10-06T10:14:13","slug":"linux-%e5%91%bd%e4%bb%a4%ef%bc%9aprintf-%e6%a0%bc%e5%bc%8f%e5%8c%96%e5%92%8c%e6%89%93%e5%8d%b0%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44798\/","title":{"rendered":"Linux \u547d\u4ee4\uff1aprintf &#8211; \u683c\u5f0f\u5316\u548c\u6253\u5370\u6578\u64da"},"content":{"rendered":"<h1 id=\"linux-%e5%91%bd%e4%bb%a4%ef%bc%9aprintf-%e6%a0%bc%e5%bc%8f%e5%8c%96%e5%92%8c%e6%89%93%e5%8d%b0%e6%95%b8%e6%93%9a-YFVDxlYvEv\">Linux \u547d\u4ee4\uff1aprintf &#8211; \u683c\u5f0f\u5316\u548c\u6253\u5370\u6578\u64da<\/h1>\n<p>\u5728 Linux \u7cfb\u7d71\u4e2d\uff0c\u547d\u4ee4\u884c\u5de5\u5177\u662f\u9032\u884c\u5404\u7a2e\u64cd\u4f5c\u7684\u91cd\u8981\u624b\u6bb5\u3002\u5176\u4e2d\uff0c<code>printf<\/code> \u547d\u4ee4\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u7528\u65bc\u683c\u5f0f\u5316\u548c\u6253\u5370\u6578\u64da\u3002\u5b83\u7684\u529f\u80fd\u985e\u4f3c\u65bc C \u8a9e\u8a00\u4e2d\u7684 <code>printf<\/code> \u51fd\u6578\uff0c\u80fd\u5920\u63d0\u4f9b\u9748\u6d3b\u7684\u683c\u5f0f\u5316\u9078\u9805\uff0c\u8b93\u7528\u6236\u80fd\u5920\u4ee5\u7279\u5b9a\u7684\u65b9\u5f0f\u8f38\u51fa\u6587\u672c\u548c\u6578\u64da\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-YFVDxlYvEv\">\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p><code>printf<\/code> \u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>printf \"\u683c\u5f0f\u5b57\u7b26\u4e32\" [\u53c3\u6578...]<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>\u683c\u5f0f\u5b57\u7b26\u4e32<\/code> \u5b9a\u7fa9\u4e86\u8f38\u51fa\u6578\u64da\u7684\u683c\u5f0f\uff0c\u800c <code>\u53c3\u6578<\/code> \u5247\u662f\u8981\u88ab\u683c\u5f0f\u5316\u7684\u6578\u64da\u3002\u683c\u5f0f\u5b57\u7b26\u4e32\u53ef\u4ee5\u5305\u542b\u6587\u672c\u548c\u683c\u5f0f\u6307\u793a\u7b26\uff0c\u683c\u5f0f\u6307\u793a\u7b26\u4ee5\u767e\u5206\u865f\uff08%\uff09\u958b\u982d\uff0c\u5f8c\u9762\u8ddf\u96a8\u7279\u5b9a\u7684\u5b57\u7b26\u4f86\u6307\u5b9a\u6578\u64da\u985e\u578b\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e6%a0%bc%e5%bc%8f%e6%8c%87%e7%a4%ba%e7%ac%a6-YFVDxlYvEv\">\u5e38\u7528\u683c\u5f0f\u6307\u793a\u7b26<\/h2>\n<ul>\n<li><code>%d<\/code> &#8211; \u6574\u6578<\/li>\n<li><code>%f<\/code> &#8211; \u6d6e\u9ede\u6578<\/li>\n<li><code>%s<\/code> &#8211; \u5b57\u7b26\u4e32<\/li>\n<li><code>%x<\/code> &#8211; \u5341\u516d\u9032\u5236\u6578<\/li>\n<li><code>%c<\/code> &#8211; \u5b57\u7b26<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b-YFVDxlYvEv\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528 <code>printf<\/code> \u7684\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e6%89%93%e5%8d%b0%e6%95%b4%e6%95%b8-YFVDxlYvEv\">\u6253\u5370\u6574\u6578<\/h3>\n<pre><code>printf \"\u6574\u6578\uff1a%dn\" 42<\/code><\/pre>\n<p>\u9019\u5c07\u8f38\u51fa\uff1a<\/p>\n<pre><code>\u6574\u6578\uff1a42<\/code><\/pre>\n<h3 id=\"%e6%89%93%e5%8d%b0%e6%b5%ae%e9%bb%9e%e6%95%b8-YFVDxlYvEv\">\u6253\u5370\u6d6e\u9ede\u6578<\/h3>\n<pre><code>printf \"\u6d6e\u9ede\u6578\uff1a%.2fn\" 3.14159<\/code><\/pre>\n<p>\u9019\u5c07\u8f38\u51fa\uff1a<\/p>\n<pre><code>\u6d6e\u9ede\u6578\uff1a3.14<\/code><\/pre>\n<h3 id=\"%e6%89%93%e5%8d%b0%e5%ad%97%e7%ac%a6%e4%b8%b2-YFVDxlYvEv\">\u6253\u5370\u5b57\u7b26\u4e32<\/h3>\n<pre><code>printf \"\u5b57\u7b26\u4e32\uff1a%sn\" \"Hello, World!\"<\/code><\/pre>\n<p>\u9019\u5c07\u8f38\u51fa\uff1a<\/p>\n<pre><code>\u5b57\u7b26\u4e32\uff1aHello, World!<\/code><\/pre>\n<h2 id=\"%e6%a0%bc%e5%bc%8f%e5%8c%96%e9%81%b8%e9%a0%85-YFVDxlYvEv\">\u683c\u5f0f\u5316\u9078\u9805<\/h2>\n<p><code>printf<\/code> \u9084\u652f\u6301\u591a\u7a2e\u683c\u5f0f\u5316\u9078\u9805\uff0c\u4f8b\u5982\u6307\u5b9a\u5b57\u6bb5\u5bec\u5ea6\u548c\u5c0d\u9f4a\u65b9\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u683c\u5f0f\u5316\u9078\u9805\uff1a<\/p>\n<ul>\n<li><code>%5d<\/code> &#8211; \u4ee5\u81f3\u5c11 5 \u500b\u5b57\u7b26\u7684\u5bec\u5ea6\u6253\u5370\u6574\u6578\uff0c\u53f3\u5c0d\u9f4a\u3002<\/li>\n<li>&lt;code%-5d<\/code> &#8211; \u4ee5\u81f3\u5c11 5 \u500b\u5b57\u7b26\u7684\u5bec\u5ea6\u6253\u5370\u6574\u6578\uff0c\u5de6\u5c0d\u9f4a\u3002<\/li>\n<li><code>%.3f<\/code> &#8211; \u6253\u5370\u6d6e\u9ede\u6578\uff0c\u4fdd\u7559\u4e09\u4f4d\u5c0f\u6578\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%ad%97%e6%ae%b5%e5%af%ac%e5%ba%a6-YFVDxlYvEv\">\u793a\u4f8b\uff1a\u5b57\u6bb5\u5bec\u5ea6<\/h3>\n<pre><code>printf \"|%5d|n\" 42<\/code><\/pre>\n<p>\u9019\u5c07\u8f38\u51fa\uff1a<\/p>\n<pre><code>|  42|<\/code><\/pre>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%b7%a6%e5%b0%8d%e9%bd%8a-YFVDxlYvEv\">\u793a\u4f8b\uff1a\u5de6\u5c0d\u9f4a<\/h3>\n<pre><code>printf \"|%-5d|n\" 42<\/code><\/pre>\n<p>\u9019\u5c07\u8f38\u51fa\uff1a<\/p>\n<pre><code>|42  |<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-YFVDxlYvEv\">\u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0c<code>printf<\/code> \u662f\u4e00\u500b\u975e\u5e38\u9748\u6d3b\u4e14\u5f37\u5927\u7684\u547d\u4ee4\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u4ee5\u591a\u7a2e\u65b9\u5f0f\u683c\u5f0f\u5316\u548c\u6253\u5370\u6578\u64da\u3002\u7121\u8ad6\u662f\u5728\u8173\u672c\u4e2d\u9084\u662f\u5728\u547d\u4ee4\u884c\u4e2d\uff0c\u638c\u63e1 <code>printf<\/code> \u7684\u4f7f\u7528\u90fd\u80fd\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\uff0c\u8b93\u6578\u64da\u8f38\u51fa\u66f4\u52a0\u7f8e\u89c0\u548c\u6613\u65bc\u95b1\u8b80\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc Linux \u547d\u4ee4\u6216\u5176\u4ed6\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u7279\u5225\u662f\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u7684\u5167\u5bb9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Linux\u547d\u4ee4printf\uff0c\u5b78\u7fd2\u5982\u4f55\u683c\u5f0f\u5316\u548c\u6253\u5370\u6578\u64da\uff0c\u63d0\u5347\u4f60\u7684\u547d\u4ee4\u884c\u6280\u80fd\uff0c\u7c21\u5316\u8f38\u51fa\u986f\u793a\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-44798","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44798","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=44798"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44798\/revisions"}],"predecessor-version":[{"id":44799,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44798\/revisions\/44799"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}