{"id":249,"date":"2022-05-23T20:51:07","date_gmt":"2022-05-23T12:51:07","guid":{"rendered":"http:\/\/139.224.63.49\/?p=249"},"modified":"2022-05-23T20:51:07","modified_gmt":"2022-05-23T12:51:07","slug":"c%e4%b8%adifstream%e5%92%8cfstream%e7%9a%84%e4%b8%80%e4%b8%aa%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"http:\/\/iamnear.top\/?p=249","title":{"rendered":"c++\u4e2difstream\u548cfstream\u7684\u4e00\u4e2a\u533a\u522b"},"content":{"rendered":"\n<p>\u592a\u4e45\u6ca1\u5199\u6587\u7ae0\u4e86\uff0c\u4eca\u5929\u6c34\u4e00\u7bc7<\/p>\n\n\n\n<p>\u524d\u51e0\u5929\u5199c++\u8bfb\u53d6\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570\u636e\u6587\u4ef6\u51fa\u4e86\u4e2a\u5c0f\u95ee\u9898\uff0c\u53d1\u73b0\u8bfb\u4e0d\u51fa\u6765\uff0c\u4ee3\u7801\u5927\u6982\u662f\u5982\u4e0b\u8fd9\u6837\u5b50\u7684<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream>\n#include &lt;fstream>\n\nusing namespace std;\n\nint main(){\n    fstream fs(\"data\",fstream::binary);\n    char data&#91;3];\n    fs.read(data,3);\n    for(int i=0;i&lt;3;++i){\n        cout&lt;&lt;(int)data&#91;i]&lt;&lt;\" \";\n    }\n    cout&lt;&lt;endl;\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u540e\u6765\u53d1\u73b0\u628afstream\u6362\u6210ifstream\u5c31\u53ef\u4ee5\u4e86<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream>\n#include &lt;fstream>\n\nusing namespace std;\n\nint main(){\n    ifstream fs(\"data\",fstream::binary);\n    char data&#91;3];\n    fs.read(data,3);\n    for(int i=0;i&lt;3;++i){\n        cout&lt;&lt;(int)data&#91;i]&lt;&lt;\" \";\n    }\n    cout&lt;&lt;endl;\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u6216\u8005\u5982\u679c\u7ee7\u7eed\u7528fstream\uff0c\u6784\u9020\u51fd\u6570\u4e2d\u9700\u8981\u663e\u5f0f\u7684\u4f20\u9012\u4e2ain\u6807\u5fd7\u4f4d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream>\n#include &lt;fstream>\n\nusing namespace std;\n\nint main(){\n    fstream fs(\"data\",fstream::binary|fstream::in);\n    char data&#91;3];\n    fs.read(data,3);\n    for(int i=0;i&lt;3;++i){\n        cout&lt;&lt;(int)data&#91;i]&lt;&lt;\" \";\n    }\n    cout&lt;&lt;endl;\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u5728http:\/\/www.cplusplus.com\/reference\/fstream\/ifstream\/ifstream\/\u4e2d\u4e5f\u6709\u8bf4\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p><samp>in<\/samp> is always set for <samp><a href=\"http:\/\/www.cplusplus.com\/ifstream\">ifstream<\/a><\/samp> objects (even if explicitly not set in argument <var>mode<\/var>).<\/p><\/blockquote><\/figure>\n\n\n\n<p>\u4e3b\u8981\u662f\u6211\u5f88\u5c11\u7528c++\u4e2d\u7684stream\uff08\u9664\u4e86cout\uff09\uff0c\u6240\u4ee5\u5bf9\u8fd9\u65b9\u9762\u7684api\u4e0d\u719f\u6089\u3002\u5728\u6b64\u8bb0\u5f55\u4e0b\u6765\u5907\u5fd8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u592a\u4e45\u6ca1\u5199\u6587\u7ae0\u4e86\uff0c\u4eca\u5929\u6c34\u4e00\u7bc7 \u524d\u51e0\u5929\u5199c++\u8bfb\u53d6\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570\u636e\u6587\u4ef6\u51fa\u4e86\u4e2a\u5c0f\u95ee\u9898\uff0c\u53d1\u73b0\u8bfb\u4e0d\u51fa\u6765\uff0c\u4ee3\u7801\u5927\u6982&hellip; <a href=\"http:\/\/iamnear.top\/?p=249\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">c++\u4e2difstream\u548cfstream\u7684\u4e00\u4e2a\u533a\u522b<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-249","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"h-entry","9":"h-as-article"},"_links":{"self":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts\/249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=249"}],"version-history":[{"count":1,"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts\/249\/revisions"}],"predecessor-version":[{"id":250,"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts\/249\/revisions\/250"}],"wp:attachment":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=249"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}