{"id":65039,"date":"2023-12-07T23:29:54","date_gmt":"2023-12-07T15:29:54","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=65039"},"modified":"2023-12-07T23:30:32","modified_gmt":"2023-12-07T15:30:32","slug":"c-%e4%b8%adcin%e5%92%8cscanf%e7%9a%84%e5%8c%ba%e5%88%ab%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/65039.html","title":{"rendered":"c\u00a0 \u4e2dcin\u548cscanf\u7684\u533a\u522b\u662f\u4ec0\u4e48"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote\">\n<p>c\u00a0 \u4e2dcin\u548cscanf\u7684\u533a\u522b\u6709\uff1a1. \u8f93\u5165\u65b9\u5f0f\u7684\u7075\u6d3b\u6027\uff1b2. \u7c7b\u578b\u5b89\u5168\u6027\u7684\u8be6\u7ec6\u8003\u8651\uff1b\uff1b3. \u9519\u8bef\u5904\u7406\u673a\u5236\u7684\u5f39\u6027\uff1b4. \u7a7a\u767d\u5b57\u7b26\u5904\u7406\u7684\u53ef\u5b9a\u5236\u6027\uff1b5. \u4ea4\u4e92\u6027\u7684\u589e\u5f3a\uff1b6. \u7a7a\u95f4\u5b89\u5168\u6027\u7684\u8fdb\u4e00\u6b65\u4fdd\u969c\u3002<code>cin<\/code>\u7684\u8f93\u5165\u65b9\u5f0f\u66f4\u52a0\u7075\u6d3b\uff0c\u56e0\u4e3a\u5b83\u662f\u57fa\u4e8eC++\u7684\u8f93\u5165\u6d41\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u8f93\u5165\u65b9\u5f0f\u7684\u7075\u6d3b\u6027<\/h2>\n\n\n\n<p><code>cin<\/code>\u7684\u8f93\u5165\u65b9\u5f0f\u66f4\u52a0\u7075\u6d3b\uff0c\u56e0\u4e3a\u5b83\u662f\u57fa\u4e8eC++\u7684\u8f93\u5165\u6d41\u3002\u8fd9\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u50cf\u4f7f\u7528\u5176\u4ed6\u8f93\u5165\u6d41\u4e00\u6837\u4f7f\u7528<code>cin<\/code>\uff0c\u4f8b\u5982\u4ece\u6587\u4ef6\u800c\u4e0d\u4ec5\u4ec5\u662f\u6807\u51c6\u8f93\u5165\u4e2d\u8bfb\u53d6\u6570\u636e\u3002\u8fd9\u79cd\u7075\u6d3b\u6027\u6709\u52a9\u4e8e\u5728\u4e0d\u540c\u7684\u8f93\u5165\u6e90\u4e4b\u95f4\u8f7b\u677e\u5207\u6362\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u5177\u53ef\u6269\u5c55\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u7c7b\u578b\u5b89\u5168\u6027\u7684\u8be6\u7ec6\u8003\u8651<\/h2>\n\n\n\n<p><code>cin<\/code>\u901a\u8fc7\u63d0\u4f9b\u5f3a\u5927\u7684\u7c7b\u578b\u5b89\u5168\u6027\uff0c\u907f\u514d\u4e86\u8bb8\u591a\u5728\u8fd0\u884c\u65f6\u53ef\u80fd\u53d1\u751f\u7684\u9519\u8bef\u3002\u5728\u7f16\u8bd1\u9636\u6bb5\uff0c<code>cin<\/code>\u4f1a\u68c0\u67e5\u6570\u636e\u7c7b\u578b\uff0c\u8fd9\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u51cf\u5c11\u4e86\u7531\u4e8e\u6570\u636e\u7c7b\u578b\u4e0d\u5339\u914d\u800c\u5f15\u8d77\u7684\u6f5c\u5728\u9519\u8bef\u3002\u8fd9\u79cd\u5f3a\u7c7b\u578b\u7684\u7279\u6027\u6709\u52a9\u4e8e\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u9519\u8bef\u5904\u7406\u673a\u5236\u7684\u5f39\u6027<\/h2>\n\n\n\n<p><code>cin<\/code>\u5177\u6709\u66f4\u4e3a\u5f3a\u5927\u548c\u7075\u6d3b\u7684\u9519\u8bef\u5904\u7406\u673a\u5236\u3002\u5b83\u652f\u6301\u5f02\u5e38\u5904\u7406\uff0c\u80fd\u591f\u6355\u83b7\u5e76\u5904\u7406\u7528\u6237\u53ef\u80fd\u8f93\u5165\u7684\u5404\u79cd\u9519\u8bef\u3002\u8fd9\u4f7f\u5f97\u6211\u4eec\u80fd\u591f\u66f4\u4f18\u96c5\u5730\u5e94\u5bf9\u7528\u6237\u8f93\u5165\u4e0d\u7b26\u5408\u9884\u671f\u7684\u60c5\u51b5\uff0c\u800c\u65e0\u9700\u5728\u4ee3\u7801\u4e2d\u52a0\u5165\u5927\u91cf\u7684\u9519\u8bef\u68c0\u67e5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u7a7a\u767d\u5b57\u7b26\u5904\u7406\u7684\u53ef\u5b9a\u5236\u6027<\/h2>\n\n\n\n<p>\u5728<code>cin<\/code>\u4e2d\uff0c\u5bf9\u7a7a\u767d\u5b57\u7b26\u7684\u5904\u7406\u66f4\u4e3a\u53ef\u5b9a\u5236\u3002\u901a\u8fc7\u4f7f\u7528<code>std::noskipws<\/code>\u6807\u5fd7\uff0c\u6211\u4eec\u53ef\u4ee5\u5173\u95ed<code>cin<\/code>\u9ed8\u8ba4\u7684\u8df3\u8fc7\u7a7a\u767d\u5b57\u7b26\u7684\u884c\u4e3a\u3002\u8fd9\u4f7f\u5f97\u6211\u4eec\u80fd\u591f\u66f4\u7075\u6d3b\u5730\u63a7\u5236\u8f93\u5165\u7684\u89e3\u6790\u8fc7\u7a0b\uff0c\u9002\u5e94\u4e0d\u540c\u7684\u8f93\u5165\u683c\u5f0f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u4ea4\u4e92\u6027\u7684\u589e\u5f3a<\/h2>\n\n\n\n<p><code>cin<\/code>\u4e0d\u4ec5\u4ec5\u662f\u8f93\u5165\u7684\u5de5\u5177\uff0c\u8fd8\u80fd\u66f4\u597d\u5730\u4e0e\u8f93\u51fa\u6d41\u534f\u540c\u5de5\u4f5c\uff0c\u589e\u5f3a\u4e86\u7a0b\u5e8f\u7684\u4ea4\u4e92\u6027\u3002\u901a\u8fc7\u4e0e<code>cout<\/code>\u7b49\u8f93\u51fa\u6d41\u7684\u7ed3\u5408\u4f7f\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u66f4\u5bcc\u6709\u8868\u73b0\u529b\u7684\u7528\u6237\u754c\u9762\uff0c\u63d0\u4f9b\u66f4\u53cb\u597d\u7684\u4ea4\u4e92\u4f53\u9a8c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. \u7a7a\u95f4\u5b89\u5168\u6027\u7684\u8fdb\u4e00\u6b65\u4fdd\u969c<\/h2>\n\n\n\n<p><code>cin<\/code>\u5bf9\u4e8e\u7a7a\u95f4\u7684\u7ba1\u7406\u66f4\u8fdb\u4e00\u6b65\uff0c\u901a\u8fc7\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u6574\u7f13\u51b2\u533a\u7684\u5927\u5c0f\uff0c\u6709\u6548\u9632\u8303\u4e86\u7531\u4e8e\u8f93\u5165\u6570\u636e\u8d85\u8fc7\u7f13\u51b2\u533a\u5bb9\u91cf\u800c\u5f15\u53d1\u7684\u5b89\u5168\u9690\u60a3\u3002\u8fd9\u79cd\u81ea\u52a8\u7684\u7f13\u51b2\u533a\u7ba1\u7406\u4f7f\u5f97\u7a0b\u5e8f\u66f4\u52a0\u5065\u58ee\uff0c\u51cf\u5c11\u4e86\u6f5c\u5728\u7684\u7f13\u51b2\u533a\u6ea2\u51fa\u95ee\u9898\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\/12\/356422-c\u4e2dcin\u548cscanf\u7684\u533a\u522b\u662f\u4ec0\u4e48.png?x-oss-process=image\/auto-orient,1\/format,webp\" class=\"aligncenter\" alt=\"c\u00a0 \u4e2dcin\u548cscanf\u7684\u533a\u522b\u662f\u4ec0\u4e48\" \/><\/p>\n\n\n\n<p><strong>\u5e38\u89c1\u95ee\u7b54\uff1a<\/strong><\/p>\n\n\n\n<ul>\n<li>\u95ee\uff1aC\u8bed\u8a00\u4e2dcin\u548cscanf\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1acin\u548cscanf\u662fC++\u548cC\u8bed\u8a00\u4e2d\u7528\u4e8e\u8f93\u5165\u7684\u4e24\u4e2a\u4e0d\u540c\u7684\u51fd\u6570\u3002cin\u662fC++\u8bed\u8a00\u4e2d\u7684\u8f93\u5165\u6d41\u5bf9\u8c61\uff0c\u5c5e\u4e8eiostream\u5e93\uff0c\u901a\u5e38\u4e0e\u6807\u51c6\u8f93\u5165\u6d41cin\u7ed3\u5408\u4f7f\u7528\u3002\u800cscanf\u662fC\u8bed\u8a00\u4e2d\u7684\u8f93\u5165\u51fd\u6570\uff0c\u5c5e\u4e8estdio\u5e93\uff0c\u7528\u4e8e\u4ece\u6807\u51c6\u8f93\u5165\u6d41\u4e2d\u8bfb\u53d6\u8f93\u5165\u6570\u636e\u3002\u4e3b\u8981\u533a\u522b\u5728\u4e8ecin\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u529f\u80fd\u548c\u7c7b\u578b\u5b89\u5168\uff0c\u800cscanf\u8f83\u4e3a\u5e95\u5c42\uff0c\u9700\u8981\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6765\u6307\u5b9a\u8f93\u5165\u7684\u6570\u636e\u7c7b\u578b\u3002<\/li>\n<\/ul>\n\n\n\n<ul>\n<li>\u95ee\uff1acin\u548cscanf\u5728\u4f7f\u7528\u65b9\u5f0f\u4e0a\u6709\u4f55\u4e0d\u540c\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1acin\u4f7f\u7528\u8d77\u6765\u66f4\u7b80\u6d01\uff0c\u4e0d\u9700\u8981\u50cfscanf\u90a3\u6837\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u800c\u662f\u6839\u636e\u53d8\u91cf\u7684\u7c7b\u578b\u81ea\u52a8\u5224\u65ad\u8f93\u5165\u3002\u4f8b\u5982\uff0ccin &gt;&gt; x; \u53ef\u4ee5\u76f4\u63a5\u8bfb\u53d6\u7528\u6237\u8f93\u5165\u5e76\u5b58\u50a8\u5230\u53d8\u91cfx\u4e2d\u3002\u800cscanf\u9700\u8981\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u5982scanf(&#8220;%d&#8221;, &amp;x); \u8868\u793a\u8bfb\u53d6\u4e00\u4e2a\u6574\u6570\u5e76\u5b58\u50a8\u5230\u53d8\u91cfx\u4e2d\u3002cin\u7684\u4f7f\u7528\u65b9\u5f0f\u66f4\u7b26\u5408\u9762\u5411\u5bf9\u8c61\u7684\u601d\u60f3\uff0c\u4f7f\u4ee3\u7801\u66f4\u76f4\u89c2\u3001\u6613\u8bfb\u3002<\/li>\n<\/ul>\n\n\n\n<ul>\n<li>\u95ee\uff1a\u5728C++\u4e2d\u80fd\u5426\u4f7f\u7528scanf\uff0c\u800c\u5728C\u8bed\u8a00\u4e2d\u80fd\u5426\u4f7f\u7528cin\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1a\u5728C++\u4e2d\u662f\u53ef\u4ee5\u4f7f\u7528scanf\u7684\uff0c\u4f46\u901a\u5e38\u4e0d\u5efa\u8bae\u6df7\u5408\u4f7f\u7528cin\u548cscanf\uff0c\u56e0\u4e3a\u5b83\u4eec\u5728\u5904\u7406\u8f93\u5165\u7f13\u51b2\u533a\u65b9\u9762\u5b58\u5728\u5dee\u5f02\uff0c\u53ef\u80fd\u5bfc\u81f4\u4e0d\u4e00\u81f4\u7684\u7ed3\u679c\u3002\u5728C\u8bed\u8a00\u4e2d\uff0ccin\u662fC++\u7684\u7279\u6709\u529f\u80fd\uff0c\u4e0d\u80fd\u76f4\u63a5\u5728C\u8bed\u8a00\u4e2d\u4f7f\u7528\u3002\u56e0\u6b64\uff0c\u8981\u6839\u636e\u4f7f\u7528\u7684\u7f16\u7a0b\u8bed\u8a00\u9009\u62e9\u5408\u9002\u7684\u8f93\u5165\u51fd\u6570\uff0c\u63a8\u8350\u5728C++\u4e2d\u4f7f\u7528cin\uff0c\u5728C\u8bed\u8a00\u4e2d\u4f7f\u7528scanf\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"c\u00a0 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