{"id":311253,"date":"2024-05-20T22:10:44","date_gmt":"2024-05-20T14:10:44","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/311253.html"},"modified":"2024-05-20T22:10:56","modified_gmt":"2024-05-20T14:10:56","slug":"printf%e9%87%8d%e5%ae%9a%e4%b9%89%ef%bc%8c%e4%b8%8d%e5%90%8c%e7%9a%84%e9%93%be%e6%8e%a5-%e8%a6%81%e6%80%8e%e4%b9%88%e5%bc%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/311253.html","title":{"rendered":"printf\u91cd\u5b9a\u4e49\uff0c\u4e0d\u540c\u7684\u94fe\u63a5 \u8981\u600e\u4e48\u5f04"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/26231924\/0621b535-e1d8-4681-9864-54f4713b3671.webp\" alt=\"printf\u91cd\u5b9a\u4e49\uff0c\u4e0d\u540c\u7684\u94fe\u63a5 \u8981\u600e\u4e48\u5f04\" \/><\/p>\n<p><p>\u5728C\u8bed\u8a00\u4e2d\uff0cprintf\u662f\u4e00\u4e2a\u6807\u51c6\u7684\u5e93\u51fd\u6570\uff0c\u7528\u4e8e\u5411\u6807\u51c6\u8f93\u51fa\uff08\u901a\u5e38\u662f\u5c4f\u5e55\uff09\u6253\u5370\u683c\u5f0f\u5316\u7684\u5b57\u7b26\u4e32\u3002\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u4e0d\u540c\u7684\u9700\u6c42\u91cd\u65b0\u5b9a\u4e49printf\u51fd\u6570\uff0c\u4ee5\u9002\u5e94\u4e0d\u540c\u7684\u8f93\u51fa\u65b9\u5f0f\u3001\u683c\u5f0f\u5316\u65b9\u6cd5\u6216\u8005\u94fe\u63a5\u5230\u4e0d\u540c\u7684\u8f93\u51fa\u8bbe\u5907\u3002\u8981\u5b9e\u73b0<strong>printf\u91cd\u5b9a\u4e49<\/strong>\u3001<strong>\u4e0d\u540c\u7684\u94fe\u63a5\u65b9\u5f0f<\/strong>\uff0c\u5173\u952e\u5728\u4e8e\u7406\u89e3\u51fd\u6570\u6307\u9488\u7684\u4f7f\u7528\u3001\u5b8f\u5b9a\u4e49\u7684\u5e94\u7528\uff0c\u4ee5\u53ca\u6761\u4ef6\u7f16\u8bd1\u673a\u5236\u7684\u5229\u7528\u3002\u6700\u6838\u5fc3\u7684\u662f<strong>\u4f7f\u7528\u51fd\u6570\u6307\u9488\u4f5c\u4e3a\u66ff\u4ee3printf\u7684\u624b\u6bb5<\/strong>\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e00\u79cd\u52a8\u6001\u9009\u62e9\u7279\u5b9a\u5b9e\u73b0\u7684\u7075\u6d3b\u6027\uff0c\u540c\u65f6\u4fdd\u6301\u4e86\u4ee3\u7801\u7684\u901a\u7528\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u4f7f\u7528\u51fd\u6570\u6307\u9488\uff0c\u53ef\u4ee5\u5728\u7a0b\u5e8f\u521d\u59cb\u5316\u65f6\u6307\u5b9a\u5177\u4f53\u7684printf\u51fd\u6570\u5b9e\u73b0\uff0c\u4ece\u800c\u5b9e\u73b0\u8fd0\u884c\u65f6\u52a8\u6001\u94fe\u63a5\u5230\u4e0d\u540c\u7248\u672c\u7684printf\u3002\u8fd9\u79cd\u65b9\u6cd5\u65e2\u907f\u514d\u4e86\u76f4\u63a5\u4fee\u6539printf\u7684\u539f\u59cb\u5b9e\u73b0\uff0c\u53c8\u63d0\u4f9b\u4e86\u8db3\u591f\u7684\u7075\u6d3b\u6027\u6765\u9002\u914d\u4e0d\u540c\u7684\u8f93\u51fa\u9700\u6c42\u3002<\/p>\n<\/p>\n<p><h2>\u4e00\u3001\u7406\u89e3\u51fd\u6570\u6307\u9488\u7684\u4f7f\u7528<\/h2>\n<\/p>\n<p><p>\u51fd\u6570\u6307\u9488\u662f\u5b58\u50a8\u51fd\u6570\u5730\u5740\u7684\u6307\u9488\u53d8\u91cf\u3002\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u6307\u5411\u7279\u5b9a\u7b7e\u540d\u51fd\u6570\u7684\u6307\u9488\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u51b3\u5b9a\u8c03\u7528\u54ea\u4e00\u4e2a\u5177\u4f53\u5b9e\u73b0\u7684\u51fd\u6570\u3002<\/p>\n<\/p>\n<ul>\n<li>\u9996\u5148\uff0c\u5b9a\u4e49\u4e00\u4e2a\u7b26\u5408printf\u7b7e\u540d\u7684\u51fd\u6570\u6307\u9488\u7c7b\u578b\u3002\u4f8b\u5982\uff0c\u8003\u8651\u5230printf\u51fd\u6570\u7684\u6807\u51c6\u7b7e\u540d\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a<code>CustomPrintf<\/code>\u7684\u7c7b\u578b\uff0c\u5b83\u63a5\u53d7\u4e0eprintf\u76f8\u540c\u7684\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2aint\u7c7b\u578b\u7684\u503c\u3002<\/li>\n<li>\u5176\u6b21\uff0c\u5b9e\u73b0\u5177\u4f53\u7684\u66ff\u4ee3\u51fd\u6570\u3002\u8fd9\u4e9b\u51fd\u6570\u9700\u8981\u5177\u6709\u4e0eprintf\u76f8\u540c\u7684\u7b7e\u540d\uff0c\u4ee5\u4fbf\u80fd\u591f\u88ab\u51fd\u6570\u6307\u9488\u6b63\u786e\u8c03\u7528\u3002\u5728\u8fd9\u4e9b\u5b9e\u73b0\u91cc\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u540c\u7684\u903b\u8f91\uff0c\u6bd4\u5982\u8f93\u51fa\u5230\u6587\u4ef6\u3001\u7f51\u7edc\u6216\u8005\u5176\u4ed6\u5b58\u50a8\u4ecb\u8d28\u3002<\/li>\n<\/ul>\n<p><h2>\u4e8c\u3001\u5b8f\u5b9a\u4e49\u7684\u5e94\u7528<\/h2>\n<\/p>\n<p><p>\u5b8f\u5b9a\u4e49\u662fC\u8bed\u8a00\u4e2d\u4e00\u79cd\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u5b83\u5141\u8bb8\u5728\u9884\u5904\u7406\u9636\u6bb5\u5bf9\u4ee3\u7801\u8fdb\u884c\u6761\u4ef6\u7f16\u8bd1\u3002\u901a\u8fc7\u5b8f\u5b9a\u4e49\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u7f16\u8bd1\u65f6\u51b3\u5b9a\u4f7f\u7528\u54ea\u4e00\u4e2aprintf\u7684\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<ul>\n<li>\u5229\u7528\u5b8f\u5b9a\u4e49\u6765\u6761\u4ef6\u6027\u5730\u91cd\u5b9a\u4e49printf\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u5b8f<code>MY_PRINTF<\/code>\uff0c\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528<code>MY_PRINTF<\/code>\u66ff\u4ee3\u76f4\u63a5\u8c03\u7528printf\u3002\u8fd9\u6837\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u7f16\u8bd1\u6761\u4ef6\u4e0b\uff0c\u901a\u8fc7\u6539\u53d8<code>MY_PRINTF<\/code>\u7684\u5b9a\u4e49\u6765\u5207\u6362\u4e0d\u540c\u7684printf\u5b9e\u73b0\u3002<\/li>\n<li>\u53e6\u5916\uff0c\u901a\u8fc7\u5b8f\u51fd\u6570\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u51fd\u6570\u8c03\u7528\u7684\u6548\u679c\uff0c\u4f46\u5728\u9884\u5904\u7406\u9636\u6bb5\u5c31\u786e\u5b9a\u4e86\u8c03\u7528\u7684\u5177\u4f53\u51fd\u6570\uff0c\u8fd9\u6837\u65e2\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u7075\u6d3b\u6027\uff0c\u4e5f\u907f\u514d\u4e86\u8fd0\u884c\u65f6\u7684\u6027\u80fd\u635f\u8017\u3002<\/li>\n<\/ul>\n<p><h2>\u4e09\u3001\u6761\u4ef6\u7f16\u8bd1\u7684\u5229\u7528<\/h2>\n<\/p>\n<p><p>\u6761\u4ef6\u7f16\u8bd1\u662f\u4e00\u79cd\u6839\u636e\u7279\u5b9a\u7f16\u8bd1\u6761\u4ef6\u8fdb\u884c\u7684\u7f16\u8bd1\u65b9\u5f0f\u3002\u901a\u8fc7\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u9884\u5904\u7406\u6307\u4ee4\u5982<code>#ifdef<\/code>\u3001<code>#ifndef<\/code>\u3001<code>#endif<\/code>\u7b49\uff0c\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u7f16\u8bd1\u6761\u4ef6\u5305\u542b\u6216\u6392\u9664\u4ee3\u7801\u6bb5\u3002<\/p>\n<\/p>\n<ul>\n<li>\u5229\u7528\u6761\u4ef6\u7f16\u8bd1\u6765\u6839\u636e\u4e0d\u540c\u7684\u9700\u6c42\u548c\u5e73\u53f0\u6765\u9009\u62e9\u4e0d\u540c\u7684printf\u5b9e\u73b0\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u9700\u8981\u91cd\u5b9a\u5411\u8f93\u51fa\u5230\u6587\u4ef6\u7684\u7248\u672c\uff0c\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u5b8f\uff0c\u5e76\u5728\u7f16\u8bd1\u65f6\u5b9a\u4e49\u8be5\u5b8f\uff0c\u6765\u9009\u62e9\u76f8\u5e94\u7684\u5b9e\u73b0\u4ee3\u7801\u3002<\/li>\n<li>\u6761\u4ef6\u7f16\u8bd1\u4e0d\u4ec5\u53ef\u4ee5\u7528\u4e8e\u9009\u62e9\u4e0d\u540c\u7684\u51fd\u6570\u5b9e\u73b0\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u8c03\u6574\u51fd\u6570\u7684\u884c\u4e3a\u3002\u6bd4\u5982\uff0c\u5728\u8c03\u8bd5\u9636\u6bb5\u9700\u8981\u66f4\u8be6\u7ec6\u7684\u65e5\u5fd7\u8f93\u51fa\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2aDEBUG\u5b8f\uff0c\u6765\u63a7\u5236printf\u7684\u8f93\u51fa\u7ec6\u8282\u3002<\/li>\n<\/ul>\n<p><h2>\u56db\u3001\u793a\u4f8b\u4e0e\u5b9e\u8df5<\/h2>\n<\/p>\n<p><p>\u6784\u5efa\u4e00\u4e2a\u5177\u4f53\u7684\u793a\u4f8b\u6765\u5c55\u793a\u5982\u4f55\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u6839\u636e\u4e0d\u540c\u7684\u8f93\u51fa\u9700\u6c42\u91cd\u5b9a\u4e49printf\u3002<\/p>\n<\/p>\n<ul>\n<li><strong>\u5b9e\u73b0\u81ea\u5b9a\u4e49\u8f93\u51fa\u51fd\u6570<\/strong>\u3002\u8fd9\u4e9b\u51fd\u6570\u53ef\u80fd\u4f1a\u5c06\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\u6587\u4ef6\u3001\u901a\u8fc7\u7f51\u7edc\u53d1\u9001\u6d88\u606f\uff0c\u6216\u8005\u4ec5\u4ec5\u662f\u5bf9\u8f93\u51fa\u683c\u5f0f\u8fdb\u884c\u8c03\u6574\u3002\u8fd9\u4e9b\u81ea\u5b9a\u4e49\u51fd\u6570\u9700\u8981\u4fdd\u6301\u4e0e\u539f\u59cbprintf\u76f8\u540c\u7684\u51fd\u6570\u7b7e\u540d\u3002<\/li>\n<li><strong>\u4f7f\u7528\u51fd\u6570\u6307\u9488\u6307\u5b9a\u5f53\u524d\u7684\u8f93\u51fa\u51fd\u6570<\/strong>\u3002\u5728\u7a0b\u5e8f\u7684\u521d\u59cb\u5316\u9636\u6bb5\uff0c\u6839\u636e\u4e0d\u540c\u7684\u8fd0\u884c\u6761\u4ef6\uff0c\u9009\u62e9\u5408\u9002\u7684\u8f93\u51fa\u51fd\u6570\u5e76\u5c06\u5176\u5730\u5740\u8d4b\u7ed9\u9884\u5b9a\u4e49\u7684\u51fd\u6570\u6307\u9488\u3002\u5728\u7a0b\u5e8f\u7684\u5176\u4ed6\u90e8\u5206\uff0c\u901a\u8fc7\u8c03\u7528\u8be5\u51fd\u6570\u6307\u9488\u6765\u8fdb\u884c\u8f93\u51fa\uff0c\u8fd9\u6837\u4fbf\u53ef\u6839\u636e\u4e0d\u540c\u7684\u9700\u6c42\u5207\u6362\u8f93\u51fa\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\u548c\u6280\u5de7\uff0c\u53ef\u4ee5\u7075\u6d3b\u5730\u5bf9printf\u8fdb\u884c\u91cd\u5b9a\u4e49\uff0c\u4ee5\u9002\u5e94\u4e0d\u540c\u73af\u5883\u548c\u9700\u6c42\u7684\u8f93\u51fa\u3002\u8fd9\u79cd\u6280\u672f\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u6269\u5c55\u6027\uff0c\u4e5f\u4e3a\u5904\u7406\u590d\u6742\u8f93\u51fa\u9700\u6c42\u63d0\u4f9b\u4e86\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u89e3\u51b3printf\u91cd\u5b9a\u4e49\u9519\u8bef\uff1f<\/strong><br \/>\n\u5728\u7f16\u8bd1C\u7a0b\u5e8f\u65f6\uff0c\u5982\u679c\u540c\u65f6\u5305\u542b\u4e86\u591a\u4e2a\u6e90\u6587\u4ef6\uff0c\u4e14\u591a\u4e2a\u6e90\u6587\u4ef6\u4e2d\u90fd\u4f7f\u7528\u4e86printf\u51fd\u6570\uff0c\u5c31\u4f1a\u51fa\u73b0printf\u91cd\u5b9a\u4e49\u7684\u9519\u8bef\u3002\u8fd9\u662f\u56e0\u4e3a\u7f16\u8bd1\u5668\u65e0\u6cd5\u786e\u5b9a\u5230\u5e95\u4f7f\u7528\u54ea\u4e2a\u6e90\u6587\u4ef6\u4e2d\u7684printf\u51fd\u6570\u3002\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528\u5934\u6587\u4ef6\u5305\u542b\u58f0\u660e\u3002\u5728\u4e3b\u6e90\u6587\u4ef6\u4e2d\u53ea\u5305\u542b\u5934\u6587\u4ef6\uff0c\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528extern\u5173\u952e\u5b57\u58f0\u660eprintf\u51fd\u6570\uff0c\u800c\u5728\u9700\u8981\u4f7f\u7528printf\u51fd\u6570\u7684\u6e90\u6587\u4ef6\u4e2d\u5305\u542b\u5934\u6587\u4ef6\uff0c\u5e76\u8c03\u7528\u8be5\u51fd\u6570\u3002<\/li>\n<li>\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528static\u5173\u952e\u5b57\u3002\u5728\u591a\u4e2a\u6e90\u6587\u4ef6\u4e2d\uff0c\u5c06\u5176\u4e2d\u4e00\u4e2a\u6e90\u6587\u4ef6\u4e2d\u7684printf\u51fd\u6570\u58f0\u660e\u4e3astatic\uff0c\u53ef\u4ee5\u907f\u514d\u91cd\u5b9a\u4e49\u9519\u8bef\u53d1\u751f\u3002<\/li>\n<li>\u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528\u6761\u4ef6\u7f16\u8bd1\u3002\u53ef\u4ee5\u5728\u5934\u6587\u4ef6\u4e2d\u4f7f\u7528\u6761\u4ef6\u7f16\u8bd1\u6307\u4ee4\uff0c\u4ee5\u786e\u4fdd\u53ea\u6709\u4e00\u4e2a\u6e90\u6587\u4ef6\u4e2d\u5305\u542b\u4e86printf\u51fd\u6570\u5b9a\u4e49\u7684\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<p><strong>2. \u5982\u4f55\u5b9e\u73b0printf\u51fd\u6570\u4e0d\u540c\u94fe\u63a5\uff1f<\/strong><br 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