{"id":63453,"date":"2023-11-25T11:39:15","date_gmt":"2023-11-25T03:39:15","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=63453"},"modified":"2023-11-25T11:39:28","modified_gmt":"2023-11-25T03:39:28","slug":"c%e9%87%8c%e7%9a%84-printf-%e5%92%8cprintf_s-%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\/63453.html","title":{"rendered":"c\u91cc\u7684 printf \u548cprintf_s \u6709\u4ec0\u4e48\u533a\u522b"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote\">\n<p>\u5728C\u7f16\u7a0b\u4e2d\uff0cprintf\u548cprintf_s\u662f\u4e24\u4e2a\u5e38\u7528\u7684\u8f93\u51fa\u51fd\u6570\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u7740\u91cd\u8981\u7684\u533a\u522b\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5b83\u4eec\u7684\uff1a1.\u5b89\u5168\u6027\uff1b2.\u7528\u6cd5\uff1b3.\u517c\u5bb9\u6027\uff1b4.\u9002\u7528\u573a\u666f\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u8fd9\u4e24\u4e2a\u51fd\u6570\u3002printf\u51fd\u6570\u662fC\u6807\u51c6\u5e93\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u7528\u4e8e\u683c\u5f0f\u5316\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa\uff08\u901a\u5e38\u662f\u5c4f\u5e55\uff09\u3002printf_s\u662fC11\u6807\u51c6\u5f15\u5165\u7684\u4e00\u79cd\u66f4\u5b89\u5168\u7684\u66ff\u4ee3\u51fd\u6570\u3002<\/p>\n\n\n\n<p><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1.<\/strong><strong>\u5b89\u5168\u6027<\/strong><\/h2>\n\n\n\n<p>printf\uff1aprintf\u51fd\u6570\u662fC\u6807\u51c6\u5e93\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u7528\u4e8e\u683c\u5f0f\u5316\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa\uff08\u901a\u5e38\u662f\u5c4f\u5e55\uff09\u3002\u7136\u800c\uff0cprintf\u51fd\u6570\u5b58\u5728\u6f5c\u5728\u7684\u5b89\u5168\u98ce\u9669\uff0c\u56e0\u4e3a\u5b83\u4e0d\u63d0\u4f9b\u8db3\u591f\u7684\u4fdd\u62a4\u673a\u5236\u6765\u9632\u6b62\u7f13\u51b2\u533a\u6ea2\u51fa\u3002\u5982\u679c\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u4e0e\u5b9e\u9645\u53c2\u6570\u4e0d\u5339\u914d\uff0c\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u635f\u574f\u6216\u5b89\u5168\u6f0f\u6d1e\u3002<\/p>\n\n\n\n<p>printf_s\uff1aprintf_s\u662fC11\u6807\u51c6\u5f15\u5165\u7684\u4e00\u79cd\u66f4\u5b89\u5168\u7684\u66ff\u4ee3\u51fd\u6570\u3002\u5b83\u63d0\u4f9b\u4e86\u989d\u5916\u7684\u53c2\u6570\uff0c\u7528\u4e8e\u6307\u5b9a\u8f93\u51fa\u7f13\u51b2\u533a\u7684\u5927\u5c0f\u3002\u8fd9\u53ef\u4ee5\u9632\u6b62\u7f13\u51b2\u533a\u6ea2\u51fa\uff0c\u4f7f\u4ee3\u7801\u66f4\u52a0\u5065\u58ee\u548c\u5b89\u5168\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u5173\u5fc3\u4ee3\u7801\u7684\u5b89\u5168\u6027\uff0c\u5efa\u8bae\u4f7f\u7528printf_s\u800c\u4e0d\u662fprintf\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2.<\/strong><strong>\u7528\u6cd5<\/strong><\/h2>\n\n\n\n<p>printf\uff1aprintf\u51fd\u6570\u7684\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u63d0\u4f9b\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u548c\u8981\u8f93\u51fa\u7684\u53d8\u91cf\u3002\u4f8b\u5982\uff0cprintf(&#8220;Hello, %s!\\n&#8221;, name);\u5c06\u4f1a\u8f93\u51fa\u4e00\u4e2a\u683c\u5f0f\u5316\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n<p>printf_s\uff1aprintf_s\u7684\u7528\u6cd5\u4e0eprintf\u7c7b\u4f3c\uff0c\u4f46\u5b83\u8981\u6c42\u63d0\u4f9b\u8f93\u51fa\u7f13\u51b2\u533a\u7684\u5927\u5c0f\u4f5c\u4e3a\u989d\u5916\u7684\u53c2\u6570\u3002\u4f8b\u5982\uff0cprintf_s(buffer, sizeof(buffer), &#8220;Hello, %s!\\n&#8221;, name);\u5c06\u4f1a\u5c06\u683c\u5f0f\u5316\u7684\u5b57\u7b26\u4e32\u8f93\u51fa\u5230\u6307\u5b9a\u7684\u7f13\u51b2\u533a\u4e2d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3.<\/strong><strong>\u517c\u5bb9\u6027<\/strong><\/h2>\n\n\n\n<p>printf\uff1aprintf\u662fC\u6807\u51c6\u5e93\u7684\u4e00\u90e8\u5206\uff0c\u56e0\u6b64\u5728\u5927\u591a\u6570C\u7f16\u8bd1\u5668\u4e2d\u90fd\u53ef\u4ee5\u4f7f\u7528\uff0c\u4f46\u5b83\u53ef\u80fd\u4e0d\u662f\u6700\u5b89\u5168\u7684\u9009\u62e9\u3002<\/p>\n\n\n\n<p>printf_s\uff1aprintf_s\u662fC11\u6807\u51c6\u5f15\u5165\u7684\u51fd\u6570\uff0c\u56e0\u6b64\u5728\u4e00\u4e9b\u65e7\u7684\u7f16\u8bd1\u5668\u4e2d\u53ef\u80fd\u4e0d\u88ab\u652f\u6301\u3002\u5982\u679c\u4f60\u7684\u9879\u76ee\u8981\u6c42\u8f83\u9ad8\u7684\u5b89\u5168\u6027\uff0c\u5e76\u4e14\u4f7f\u7528\u7684\u7f16\u8bd1\u5668\u652f\u6301C11\u6807\u51c6\uff0c\u90a3\u4e48\u53ef\u4ee5\u8003\u8651\u4f7f\u7528printf_s\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4.<\/strong><strong>\u9002\u7528\u573a\u666f<\/strong><\/h2>\n\n\n\n<p>printf\uff1aprintf\u901a\u5e38\u9002\u7528\u4e8e\u7b80\u5355\u7684\u8f93\u51fa\u9700\u6c42\uff0c\u5f53\u4f60\u5bf9\u8f93\u51fa\u7684\u5b89\u5168\u6027\u8981\u6c42\u4e0d\u9ad8\u65f6\u53ef\u4ee5\u4f7f\u7528\u3002<\/p>\n\n\n\n<p>printf_s\uff1aprintf_s\u66f4\u9002\u5408\u5bf9\u8f93\u51fa\u5b89\u5168\u6027\u6709\u8f83\u9ad8\u8981\u6c42\u7684\u60c5\u51b5\uff0c\u7279\u522b\u662f\u5f53\u8f93\u51fa\u6570\u636e\u6765\u81ea\u4e0d\u53ef\u4fe1\u7684\u6e90\u6216\u8005\u9700\u8981\u907f\u514d\u7f13\u51b2\u533a\u6ea2\u51fa\u65f6\u3002<\/p>\n\n\n\n<p><img fetchpriority=\"high\" decoding=\"async\" width=\"484\" height=\"300\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/11\/565341-c\u91cc\u7684printf\u548cprintfs\u6709\u4ec0\u4e48\u533a\u522b.png?x-oss-process=image\/auto-orient,1\/format,webp\" class=\"aligncenter\" alt=\"c\u91cc\u7684 printf \u548cprintf_s \u6709\u4ec0\u4e48\u533a\u522b\" \/><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u5e38\u89c1\u95ee\u7b54<\/strong><\/h2>\n\n\n\n<p><strong>1.printf<\/strong><strong>\u548cprintf_s\u4e4b\u95f4\u6700\u5927\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n<p>printf\u548cprintf_s\u7684\u6700\u5927\u533a\u522b\u5728\u4e8e\u5b89\u5168\u6027\u3002printf_s\u662f\u4e00\u79cd\u66f4\u5b89\u5168\u7684\u66ff\u4ee3\u51fd\u6570\uff0c\u5b83\u63d0\u4f9b\u4e86\u989d\u5916\u7684\u53c2\u6570\u6765\u6307\u5b9a\u8f93\u51fa\u7f13\u51b2\u533a\u7684\u5927\u5c0f\uff0c\u4ee5\u9632\u6b62\u7f13\u51b2\u533a\u6ea2\u51fa\u3002\u800cprintf\u6ca1\u6709\u8fd9\u79cd\u4fdd\u62a4\u673a\u5236\uff0c\u53ef\u80fd\u5b58\u5728\u5b89\u5168\u98ce\u9669\u3002<\/p>\n\n\n\n<p><strong>2.<\/strong><strong>\u6211\u4ec0\u4e48\u65f6\u5019\u5e94\u8be5\u4f7f\u7528printf\uff0c\u4ec0\u4e48\u65f6\u5019\u5e94\u8be5\u4f7f\u7528printf_s\uff1f<\/strong><\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u5bf9\u8f93\u51fa\u7684\u5b89\u5168\u6027\u6ca1\u6709\u7279\u522b\u9ad8\u7684\u8981\u6c42\uff0c\u800c\u4e14\u4f60\u7684\u7f16\u8bd1\u5668\u652f\u6301printf_s\uff0c\u90a3\u4e48\u53ef\u4ee5\u4f7f\u7528printf\u3002\u4f46\u5982\u679c\u4f60\u9700\u8981\u786e\u4fdd\u8f93\u51fa\u7684\u5b89\u5168\u6027\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u6765\u81ea\u4e0d\u53ef\u4fe1\u6e90\u7684\u6570\u636e\u65f6\uff0c\u6216\u8005\u9700\u8981\u907f\u514d\u7f13\u51b2\u533a\u6ea2\u51fa\uff0c\u5efa\u8bae\u4f7f\u7528printf_s\u3002<\/p>\n\n\n\n<p><strong>3.printf_s<\/strong><strong>\u5728\u54ea\u4e9b\u7f16\u8bd1\u5668\u4e2d\u5f97\u5230\u652f\u6301\uff1f<\/strong><\/p>\n\n\n\n<p>printf_s\u662fC11\u6807\u51c6\u5f15\u5165\u7684\u51fd\u6570\uff0c\u56e0\u6b64\u5728\u7b26\u5408C11\u6807\u51c6\u7684\u7f16\u8bd1\u5668\u4e2d\u5f97\u5230\u652f\u6301\u3002\u4e0d\u8fc7\uff0c\u5e76\u975e\u6240\u6709\u7684\u65e7\u7f16\u8bd1\u5668\u90fd\u652f\u6301\u5b83\u3002\u5e38\u89c1\u7684\u73b0\u4ee3\u7f16\u8bd1\u5668\uff0c\u5982GCC\u3001Clang\u548cMicrosoft Visual C++\uff0c\u901a\u5e38\u4f1a\u652f\u6301printf_s\u3002<\/p>\n\n\n\n<p><strong>4.<\/strong><strong>\u5982\u4f55\u6b63\u786e\u4f7f\u7528printf_s\u51fd\u6570\uff1f<\/strong><\/p>\n\n\n\n<p>\u8981\u6b63\u786e\u4f7f\u7528printf_s\u51fd\u6570\uff0c\u4f60\u9700\u8981\u63d0\u4f9b\u8f93\u51fa\u7f13\u51b2\u533a\u7684\u5927\u5c0f\u4f5c\u4e3a\u989d\u5916\u7684\u53c2\u6570\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u8fd9\u6837\u4f7f\u7528\uff1aprintf_s(buffer, sizeof(buffer), &#8220;Hello, %s!\\n&#8221;, name);\u3002\u8fd9\u5c06\u786e\u4fdd\u8f93\u51fa\u7684\u6570\u636e\u4e0d\u4f1a\u8d85\u51fa\u7f13\u51b2\u533a\u7684\u8fb9\u754c\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n<p><strong>5.printf<\/strong><strong>\u548cprintf_s\u4e4b\u95f4\u7684\u6027\u80fd\u5dee\u5f02\u5982\u4f55\uff1f<\/strong><\/p>\n\n\n\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0cprintf\u548cprintf_s\u4e4b\u95f4\u7684\u6027\u80fd\u5dee\u5f02\u4e0d\u5927\uff0c\u56e0\u4e3a\u5b83\u4eec\u6267\u884c\u7684\u4efb\u52a1\u7c7b\u4f3c\u3002\u6027\u80fd\u5dee\u5f02\u53ef\u80fd\u5728\u6781\u7aef\u60c5\u51b5\u4e0b\u624d\u4f1a\u663e\u8457\uff0c\u4f8b\u5982\u5927\u91cf\u91cd\u590d\u7684\u8f93\u51fa\u64cd\u4f5c\u3002\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u9009\u62e9\u54ea\u4e2a\u51fd\u6570\u5e94\u8be5\u66f4\u591a\u5730\u4f9d\u8d56\u4e8e\u5b89\u5168\u6027\u9700\u6c42\u800c\u4e0d\u662f\u6027\u80fd\u8003\u8651\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728C\u7f16\u7a0b\u4e2d\uff0cprintf\u548cprintf_s\u662f\u4e24\u4e2a\u5e38\u7528\u7684\u8f93\u51fa\u51fd\u6570\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u7740\u91cd\u8981\u7684\u533a\u522b\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5b83\u4eec\u7684\uff1a [&hellip;]","protected":false},"author":5,"featured_media":63458,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/63453"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=63453"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/63453\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/63458"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=63453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=63453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=63453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}