\u4f46\u662f\u5f53\u6211\u7ffb\u5f00\u4e2d\u7ea7\u6559\u7a0b\u7684\u7b2c\u4e00\u9875\u540e\uff0c\u6211\u9047\u5230\u4e86 printf\uff0c\u4e00\u4e2a\u6666\u6da9\u96be\u61c2\u7684\u3001\u795e\u79d8\u83ab\u6d4b\u7684\uff0c\u53c8\u51fa\u5947\u7075\u6d3b\u7684\u51fd\u6570\u3002\u672c\u6587\u4e00\u53cd\u5411\u521d\u5b66\u8005\u9690\u85cf printf \u8fd9\u4e2a\u4ee4\u4eba\u8d39\u89e3\u7684\u4f20\u7edf\uff0c\u65e8\u5728\u4ecb\u7ecd\u8fd9\u4e2a\u4e0d\u8d77\u773c\u7684 printf \u51fd\u6570\uff0c\u5e76\u89e3\u91ca\u5982\u4f55\u5728\u51e0\u4e4e\u6240\u6709\u8bed\u8a00\u4e2d\u4f7f\u7528\u5b83\u3002<\/p>\n

printf \u7b80\u53f2<\/strong><\/div>\n
\u672f\u8bed printf \u4ee3\u8868\u201c\u683c\u5f0f\u5316\u6253\u5370print formatted\u201d\uff0c\u5b83\u53ef\u80fd\u6700\u65e9\u51fa\u73b0 Algol 68 \u7f16\u7a0b\u8bed\u8a00\u4e2d\u3002\u81ea\u4ece\u5b83\u88ab\u7eb3\u5165\u5230 C \u8bed\u8a00\u540e\uff0cprintf \u5df2\u7ecf\u5728 C++\u3001Java\u3001Bash\u3001PHP \u4e2d\u4e00\u6b21\u6b21\u91cd\u65b0\u5b9e\u73b0\uff0c\u5e76\u4e14\u5f88\u53ef\u80fd\u5728\u4f60\u6700\u559c\u6b22\u7684 \u201c\u540e C\u201d \u8bed\u8a00\u4e2d\u518d\u6b21\u51fa\u73b0\u3002<\/p>\n
\u663e\u7136\uff0c\u5b83\u5f88\u53d7\u6b22\u8fce\uff0c\u4f46\u5f88\u591a\u4eba\u8ba4\u4e3a\u5b83\u7684\u8bed\u6cd5\u5f88\u590d\u6742\uff0c\u5c24\u5176\u662f\u4e0e echo \u6216 print \u6216 cout \u7b49\u66ff\u4ee3\u7684\u51fd\u6570\u76f8\u6bd4\u5c24\u4e3a\u660e\u663e\u3002\u4f8b\u5982\uff0c\u8fd9\u662f\u5728 Bash \u4e2d\u7684\u4e00\u4e2a\u7b80\u5355\u7684 echo \u8bed\u53e5\uff1a<\/p>\n
$\u00a0echo\u00a0hello\r\nhello\r\n$<\/pre>\n
\u8fd9\u662f\u5728 Bash \u4e2d\u4f7f\u7528 printf \u5f97\u5230\u540c\u6837\u7ed3\u679c\uff1a<\/p>\n
$\u00a0printf\u00a0\"%s\\n\"\u00a0hello\r\nhello\r\n$<\/pre>\n
\u4f46\u662f\u6240\u589e\u52a0\u7684\u590d\u6742\u6027\u53cd\u800c\u8ba9\u4f60\u62e5\u6709\u5f88\u591a\u529f\u80fd\uff0c\u8fd9\u662f\u4e3a\u4ec0\u4e48 printf \u503c\u5f97\u5b66\u4e60\u7684\u786e\u5207\u539f\u56e0\u3002<\/p>\n
printf \u8f93\u51fa<\/strong><\/div>\n
\u5728 printf \u80cc\u540e\u7684\u57fa\u672c\u601d\u60f3\u662f\uff1a\u5b83\u80fd\u591f\u57fa\u4e8e\u4e0e\u5185\u5bb9\u5206\u79bb\u7684\u6837\u5f0f\u4fe1\u606f\u6765\u683c\u5f0f\u5316\u8f93\u51fa\u3002\u4f8b\u5982\uff0c\u8fd9\u91cc\u662f printf \u8ba4\u53ef\u7684\u89c6\u4f5c\u7279\u6b8a\u5b57\u7b26\u7684\u7279\u5b9a\u5e8f\u5217\u96c6\u5408\u3002\u4f60\u559c\u6b22\u7684\u8bed\u8a00\u53ef\u80fd\u4f1a\u6709\u6216\u591a\u6216\u5c11\u7684\u5e8f\u5217\uff0c\u4f46\u662f\u901a\u5e38\u5305\u542b\uff1a<\/p>\n
\n
\\n: \u65b0\u884c<\/li>\n
\\r: \u56de\u8f66\u6362\u884c<\/li>\n
\\t: \u6c34\u5e73\u5236\u8868\u7b26<\/li>\n
\\NNN: \u4e00\u4e2a\u5305\u542b\u4e00\u4e2a\u5230\u4e09\u4e2a\u6570\u5b57\uff0c\u4f7f\u7528\u516b\u8fdb\u5236\u503c\u8868\u793a\u7684\u7279\u6b8a\u5b57\u8282<\/li>\n<\/ul>\n
\u4f8b\u5982\uff1a<\/p>\n
$\u00a0printf\u00a0\"\\t\\123\\105\\124\\110\\n\"\r\n\u00a0\u00a0\u00a0\u00a0\u00a0SETH\r\n$<\/pre>\n
\u5728\u8fd9\u4e2a Bash \u793a\u4f8b\u4e2d\uff0c printf \u6e32\u67d3\u4e00\u4e2a\u5236\u8868\u7b26\u540e\uff0c\u7136\u540e\u662f\u5206\u914d\u7ed9\u56db\u4e2a\u516b\u8fdb\u5236\u503c\u5b57\u7b26\u4e32\u7684 ASCII \u5b57\u7b26\uff0c\u5e76\u4ee5\u4e00\u4e2a\u751f\u6210\u4e00\u4e2a\u65b0\u884c(\\n)\u7684\u63a7\u5236\u5e8f\u5217\u7ed3\u675f\u3002<\/p>\n
\u5982\u679c\u540c\u6837\u4f7f\u7528 echo \u6765\u8f93\u51fa\u4f1a\u4ea7\u751f\u66f4\u591a\u7684\u5b57\u7b26\uff1a<\/p>\n
$\u00a0printf\u00a0\"\\t\\123\\105\\124\\110\\n\"\r\n\\t\\123\\105\\124\\110\\n\r\n$<\/pre>\n
\u4f7f\u7528 Python \u7684 print \u51fd\u6570\u6765\u5b8c\u6210\u540c\u6837\u7684\u4efb\u52a1\uff0c\u4f60\u4f1a\u53d1\u73b0 Python \u7684 print \u547d\u4ee4\u6bd4\u4f60\u60f3\u8c61\u7684\u8981\u5f3a\u5927\uff1a<\/p>\n
>>>\u00a0print(\"\\t\\123\\n\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0S\r\n>>><\/pre>\n
\u663e\u7136\uff0cPython \u7684 print \u5305\u542b\u4f20\u7edf\u7684 printf \u7279\u6027\u4ee5\u53ca\u7b80\u5355\u7684 echo \u6216 cout \u7684\u7279\u6027\u3002<\/p>\n
\u4e0d\u8fc7\uff0c\u8fd9\u4e9b\u793a\u4f8b\u5305\u62ec\u7684\u53ea\u662f\u6587\u5b57\u5b57\u7b26\uff0c\u5c3d\u7ba1\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u5b83\u4eec\u4e5f\u5f88\u6709\u7528\uff0c\u4f46\u5b83\u4eec\u53ef\u80fd\u662f printf \u6700\u4e0d\u91cd\u8981\u7684\u90e8\u5206\u3002printf \u7684\u771f\u6b63\u7684\u5a01\u529b\u5728\u4e8e\u683c\u5f0f\u5316\u8bf4\u660e\u3002<\/p>\n
\u4f7f\u7528 printf \u683c\u5f0f\u5316\u8f93\u51fa<\/p>\n
\u683c\u5f0f\u5316\u8bf4\u660e\u7b26\u662f\u4ee5\u4e00\u4e2a\u767e\u5206\u53f7(%)\u5f00\u5934\u7684\u5b57\u7b26\u3002<\/p>\n
\u5e38\u89c1\u7684\u683c\u5f0f\u5316\u8bf4\u660e\u7b26\u5305\u62ec\uff1a<\/p>\n
\n
%s: \u5b57\u7b26\u4e32<\/li>\n
%d: \u6570\u5b57<\/li>\n
%f: \u6d6e\u70b9\u6570\u5b57<\/li>\n
%o: \u4e00\u4e2a\u516b\u8fdb\u5236\u7684\u6570\u5b57<\/li>\n<\/ul>\n
\u8fd9\u4e9b\u683c\u5f0f\u5316\u8bf4\u660e\u7b26\u662f printf \u8bed\u53e5\u7684\u5360\u4f4d\u7b26\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u5728\u5176\u5b83\u5730\u65b9\u63d0\u4f9b\u7684\u503c\u6765\u66ff\u6362\u4f60\u7684 printf \u8bed\u53e5\u4e2d\u7684\u5360\u4f4d\u7b26\u3002\u8fd9\u4e9b\u503c\u5728\u54ea\u91cc\u63d0\u4f9b\u53d6\u51b3\u4e8e\u4f60\u4f7f\u7528\u7684\u8bed\u8a00\u548c\u5b83\u7684\u8bed\u6cd5\uff0c\u8fd9\u91cc\u6709\u4e00\u4e2a\u7b80\u5355\u7684 Java \u4f8b\u5b50\uff1a<\/p>\n
string\u00a0var=\"hello\\n\";\r\nsystem.out.printf(\"%s\",\u00a0var);<\/pre>\n
\u628a\u8fd9\u4e2a\u4ee3\u7801\u5305\u88f9\u5728\u9002\u5f53\u7684\u6837\u677f\u6587\u4ef6\u4e2d\uff0c\u5728\u6267\u884c\u540e\uff0c\u5c06\u5448\u73b0\uff1a<\/p>\n
$\u00a0.\/example\r\nhello\r\n$<\/pre>\n
\u4f46\u662f\uff0c\u5f53\u4e00\u4e2a\u53d8\u91cf\u7684\u5185\u5bb9\u66f4\u6539\u65f6\uff0c\u6709\u610f\u601d\u7684\u5730\u65b9\u5c31\u6765\u4e86\u3002\u5047\u8bbe\u4f60\u60f3\u57fa\u4e8e\u4e0d\u65ad\u589e\u52a0\u7684\u6570\u5b57\u6765\u66f4\u65b0\u8f93\u51fa\uff1a<\/p>\n
#include\u00a0<stdio.h>\r\nint\u00a0main()\u00a0{\r\n\u00a0\u00a0int\u00a0var=0;\r\n\u00a0\u00a0while\u00a0(\u00a0var\u00a0<\u00a0100)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0var++;\r\n\u00a0\u00a0printf(\"Processing\u00a0is\u00a0%d%\u00a0finished.\\n\",\u00a0var);\r\n\u00a0\u00a0}\r\n\u00a0\u00a0return\u00a00;\r\n}<\/pre>\n
\u7f16\u8bd1\u5e76\u8fd0\u884c\uff1a<\/p>\n
Processing\u00a0is\u00a01%\u00a0finished.\r\n[...]\r\nProcessing\u00a0is\u00a0100%\u00a0finished.<\/pre>\n
\u6ce8\u610f\uff0c\u5728\u4ee3\u7801\u4e2d\u7684\u4e24\u4e2a % \u5c06\u88ab\u89e3\u6790\u4e3a\u4e00\u4e2a\u6253\u5370\u51fa\u6765\u7684 % \u7b26\u53f7\u3002<\/p>\n
\u4f7f\u7528 printf \u9650\u5236\u5c0f\u6570\u4f4d\u6570<\/strong><\/div>\n
\u6570\u5b57\u4e5f\u53ef\u4ee5\u662f\u5f88\u590d\u6742\uff0cprintf \u63d0\u4f9b\u5f88\u591a\u683c\u5f0f\u5316\u9009\u9879\u3002\u4f60\u53ef\u4ee5\u5bf9\u6d6e\u70b9\u6570\u4f7f\u7528 %f \u9650\u5236\u6253\u5370\u51fa\u591a\u5c11\u4e2a\u5c0f\u6570\u4f4d\u3002\u901a\u8fc7\u628a\u4e00\u4e2a\u70b9(.)\u548c\u4e00\u4e2a\u9650\u5236\u7684\u6570\u653e\u7f6e\u5728\u767e\u5206\u7b26\u53f7\u548c f \u4e4b\u95f4, \u4f60\u53ef\u4ee5\u544a\u8bc9 printf \u6253\u5370\u591a\u5c11\u4f4d\u5c0f\u6570\u3002\u8fd9\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u7528 Bash \u5199\u7684\u7b80\u7ec3\u793a\u4f8b\uff1a<\/p>\n
$\u00a0printf\u00a0\"%.2f\\n\"\u00a03.141519\r\n3.14\r\n$<\/pre>\n
\u7c7b\u4f3c\u7684\u8bed\u6cd5\u4e5f\u9002\u7528\u4e8e\u5176\u5b83\u7684\u8bed\u8a00\u3002\u8fd9\u91cc\u662f\u4e00\u4e2a C \u8bed\u8a00\u7684\u793a\u4f8b\uff1a<\/p>\n
#include\u00a0<math.h>\r\n#include\u00a0<stdio.h>\r\nint\u00a0main()\u00a0{\r\n\u00a0\u00a0fprintf(stdout,\u00a0\"%.2f\\n\",\u00a04\u00a0*\u00a0atan(1.0));\r\n\u00a0\u00a0return\u00a00;\r\n}<\/pre>\n
\u5bf9\u4e8e\u4e09\u4f4d\u5c0f\u6570\uff0c\u4f7f\u7528 .3f \uff0c\u4f9d\u6b21\u7c7b\u63a8\u3002<\/p>\n
\u4f7f\u7528 printf \u6765\u5728\u6570\u5b57\u4e0a\u6dfb\u52a0\u9017\u53f7<\/strong><\/div>\n
\u56e0\u4e3a\u4f4d\u6570\u5927\u7684\u6570\u5b57\u5f88\u96be\u89e3\u8bfb\uff0c\u6240\u4ee5\u901a\u5e38\u4f7f\u7528\u4e00\u4e2a\u9017\u53f7\u6765\u65ad\u5f00\u5927\u7684\u6570\u5b57\u3002\u4f60\u53ef\u4ee5\u5728\u767e\u5206\u53f7\u548c d \u4e4b\u95f4\u653e\u7f6e\u4e00\u4e2a\u6487\u53f7(')\uff0c\u8ba9 printf \u6839\u636e\u9700\u8981\u6dfb\u52a0\u9017\u53f7\uff1a<\/p>\n
$\u00a0printf\u00a0\"%'d\\n\"\u00a01024\r\n1,024\r\n$\u00a0printf\u00a0\"%'d\\n\"\u00a01024601\r\n1,024,601\r\n$<\/pre>\n
\u4f7f\u7528 printf \u6765\u6dfb\u52a0\u524d\u7f00\u96f6<\/strong><\/div>\n
printf \u7684\u53e6\u4e00\u4e2a\u5e38\u7528\u7684\u7528\u6cd5\u662f\u5bf9\u6587\u4ef6\u540d\u79f0\u4e2d\u7684\u6570\u5b57\u5f3a\u5236\u5b9e\u884c\u4e00\u79cd\u7279\u5b9a\u7684\u683c\u5f0f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5728\u4e00\u53f0\u8ba1\u7b97\u673a\u4e0a\u6709 10 \u4e2a\u6309\u987a\u5e8f\u6392\u5217\u7684\u6587\u4ef6\uff0c\u8ba1\u7b97\u673a\u53ef\u80fd\u4f1a\u628a 10.jpg \u6392\u5728 1.jpg \u4e4b\u524d\uff0c\u8fd9\u53ef\u80fd\u4e0d\u662f\u4f60\u7684\u672c\u610f\u3002\u5f53\u4f60\u4ee5\u7f16\u7a0b\u7684\u65b9\u5f0f\u5199\u4e00\u4e2a\u5230\u6587\u4ef6\u65f6\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 printf \u6765\u7528\u524d\u7f00\u4e3a 0 \u7684\u5b57\u7b26\u5f62\u6210\u6587\u4ef6\u540d\u79f0\u3002\u8fd9\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u7528 Bash \u5199\u7684\u7b80\u7ec3\u793a\u4f8b\uff1a<\/p>\n
$\u00a0printf\u00a0\"%03d.jpg\\n\"\u00a0{1..10}\r\n001.jpg\r\n002.jpg\r\n[...]\r\n010.jpg<\/pre>\n
\u6ce8\u610f\uff1a\u6bcf\u4e2a\u6570\u5b57\u6700\u591a\u4f7f\u7528 3 \u4f4d\u6570\u5b57\u3002<\/p>\n
\u4f7f\u7528 printf<\/strong><\/div>\n
\u6b63\u5982\u8fd9\u4e9b printf \u793a\u4f8b\u6240\u663e\u793a\uff0c\u5305\u62ec\u63a7\u5236\u5b57\u7b26\uff0c\u5c24\u5176\u662f \\n \uff0c\u53ef\u80fd\u4f1a\u5197\u957f\uff0c\u5e76\u4e14\u8bed\u6cd5\u76f8\u5bf9\u590d\u6742\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5f00\u53d1\u50cf echo \u548c cout \u4e4b\u7c7b\u7684\u5feb\u6377\u65b9\u5f0f\u7684\u539f\u56e0\u3002\u4e0d\u8fc7\uff0c\u5982\u679c\u4f60\u65f6\u4e0d\u65f6\u5730\u4f7f\u7528 printf \uff0c\u4f60\u5c31\u4f1a\u4e60\u60ef\u4e8e\u8fd9\u79cd\u8bed\u6cd5\uff0c\u5e76\u4e14\u5b83\u4e5f\u4f1a\u53d8\u6210\u4f60\u7684\u4e60\u60ef\u3002\u6211\u4e0d\u8ba4\u4e3a printf \u6709\u4efb\u4f55\u7406\u7531\u6210\u4e3a\u4f60\u5728\u65e5\u5e38\u6d3b\u52a8\u4e2d\u6253\u5370\u65f6\u7684\u9996\u9009\uff0c\u4f46\u662f\u5b83\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u5de5\u5177\uff0c\u5f53\u4f60\u9700\u8981\u5b83\u65f6\uff0c\u5b83\u4e0d\u4f1a\u62d6\u7d2f\u4f60\u3002<\/p>\n
\u82b1\u4e00\u4e9b\u65f6\u95f4\u5b66\u4e60\u4f60\u6240\u9009\u62e9\u8bed\u8a00\u4e2d\u7684 printf\uff0c\u5e76\u4e14\u5f53\u4f60\u9700\u8981\u65f6\u5c31\u4f7f\u7528\u5b83\u3002\u5b83\u662f\u4e00\u4e2a\u5f3a\u6709\u529b\u7684\u5de5\u5177\uff0c\u4f60\u4e0d\u4f1a\u540e\u6094\u968f\u65f6\u53ef\u7528\u7684\u5de5\u5177\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f46\u662f\u5f53\u6211\u7ffb\u5f00\u4e2d\u7ea7\u6559\u7a0b\u7684\u7b2c\u4e00\u9875\u540e\uff0c\u6211\u9047\u5230\u4e86 printf\uff0c\u4e00\u4e2a\u6666\u6da9\u96be\u61c2\u7684\u3001\u795e\u79d8\u83ab\u6d4b\u7684\uff0c\u53c8\u51fa\u5947\u7075\u6d3b\u7684\u51fd\u6570\u3002\u672c\u6587\u4e00\u53cd […]<\/p>\n","protected":false},"author":323,"featured_media":192404,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-200446","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts\/200446","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/users\/323"}],"replies":[{"embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/comments?post=200446"}],"version-history":[{"count":3,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts\/200446\/revisions"}],"predecessor-version":[{"id":200823,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/posts\/200446\/revisions\/200823"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/media\/192404"}],"wp:attachment":[{"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/media?parent=200446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/categories?post=200446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gulass.cn\/wp-json\/wp\/v2\/tags?post=200446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}