{"id":645,"date":"2011-05-07T11:48:00","date_gmt":"2011-05-07T03:48:00","guid":{"rendered":"http:\/\/115.29.108.60\/?p=645"},"modified":"2011-09-26T21:55:35","modified_gmt":"2011-09-26T13:55:35","slug":"fopen%e7%b3%bb%e5%88%97%e5%87%bd%e6%95%b0%e5%bc%95%e8%b5%b7%e7%9a%84%e4%b8%80%e4%b8%aa%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/115.29.108.60\/?p=645","title":{"rendered":"fopen\u7cfb\u5217\u51fd\u6570\u5f15\u8d77\u7684\u4e00\u4e2a\u95ee\u9898"},"content":{"rendered":"

\u4eca\u5929\u51cc\u6668\u65e0\u804a\u901bCSDN\u8bba\u575b\u7684\u65f6\u5019\u53d1\u73b0\u4e86\u8fd9\u6837\u4e00\u4e2a\u5e16\u5b50\uff1a<\/p>\n

\u697c\u4e3b\u4f7f\u7528fopen\u7cfb\u5217\u51fd\u6570\u4ee5\u201cr+\u201d\u7684\u6a21\u5f0f\u6253\u5f00\u4e00\u4e2a\u5199\u6709\u201cabcdefg\u201d\u5b57\u7b26\u4e32\u7684\u6587\u4ef6\uff0c\u5faa\u73affgetc\u3001printf\uff0c\u6700\u540efclose\uff0c\u7a0b\u5e8f\u663e\u793a\u51fa\u201cabcdefg\u201d\u6ca1\u6709\u95ee\u9898\u3002\u4f46\u518d\u6b21\u6253\u5f00\u6587\u4ef6\uff0c\u5148fputc(‘Z’, fp)\uff0c\u7136\u540e\u5faa\u73affgetc\u3001printf\uff0c\u6700\u540efclose\uff0c\u8fd9\u5c31\u51fa\u95ee\u9898\u4e86\u3002<\/p>\n

\u95ee\u9898\u8868\u73b0\u4e3a\u4e24\u4e2a\u65b9\u9762\uff1a\u4e00\u662fprintf\u51fa\u6765\u7684\u5b57\u7b26\u4e32\u4e0d\u662f\u9884\u671f\u7684\u201cbcdefg\u201d\uff0c\u800c\u662f\u5f88\u591a\u201c\u5c6f\u201d\u7684\u5b57\u6837\uff1b\u4e8c\u662f\u539f\u6587\u4ef6\u4e5f\u5e76\u4e0d\u662f\u9884\u671f\u7684\u201cZbcdefg\u201d\uff0c\u800c\u662f\u201cZ\u5c6f\u5c6f\u5c6f…\u201d\u3002<\/p>\n

<\/p>\n

\u7ecf\u8fc7\u8c03\u8bd5\u5206\u6790\uff0c\u6211\u7684\u7ed3\u8bba\u5982\u4e0b\uff1afopen\u4ec5\u4ec5\u5206\u914d\u4e86\u76f8\u5173\u8d44\u6e90\u5982FILE *fp\uff0c\u4f46\u5e76\u6ca1\u6709\u53ca\u65f6\u5730\u5c06\u6587\u4ef6\u6d41\u52a0\u8f7d\u5230\u5185\u5b58\u7f13\u51b2\u533a\uff0c\u5e76\u4e88\u4ee5\u7ef4\u62a4\u3002\u5185\u5b58\u7f13\u51b2\u533a\u7684\u5206\u914d\u4e0e\u6587\u4ef6\u6d41\u7684\u52a0\u8f7d\u53ca\u7ef4\u62a4\u88ab\u5ef6\u8fdf\u5230\u5bf9\u6587\u4ef6\u6d41\u7684\u7b2c\u4e00\u6b21\u8bfb\u6216\u5199\u64cd\u4f5c\u65f6\uff0c\u5982fgetc\u3001fputc\u3002\u5927\u5bb6\u53ef\u4ee5\u60f3\u60f3\u4e3a\u4ec0\u4e48\u4f1a\u8fd9\u4e48\u505a\uff0c\u8fd9\u91cc\u6211\u5c31\u4e0d\u8bf4\u660e\u4e86\u3002<\/p>\n

\u56de\u5230\u697c\u4e3b\u7684\u95ee\u9898\uff1a
\n\u7b2c\u4e00\u6b21fopen\u2014\u2014\u4ec5\u5206\u914d\u4e86\u90e8\u5206\u8d44\u6e90\u3002\u5faa\u73affgetc\u3001printf\u2014\u2014\u5206\u914d\u5185\u5b58\u7f13\u51b2\u533a\u3001\u52a0\u8f7d\u6587\u4ef6\u6d41\u5e76\u7ef4\u62a4\u6d41\u7684\u72b6\u6001\u3002\u8fd9\u6837\uff0c\u5728fgetc\u65f6\u201cabcdefg\u201d\u6587\u4ef6\u6d41\u5df2\u7ecf\u88ab\u6b63\u786e\u5730\u52a0\u8f7d\u548c\u7ef4\u62a4\uff0c\u56e0\u6b64\u63a5\u4e0b\u6765\u5faa\u73af\u5bf9\u5b83\u8fdb\u884c\u8bfb\u53d6\u5e76\u6253\u5370\u51fa\u6765\u4e0d\u4f1a\u51fa\u73b0\u95ee\u9898\u3002
\n\u7b2c\u4e8c\u6b21fopen\u2014\u2014\u4ec5\u5206\u914d\u4e86\u90e8\u5206\u8d44\u6e90\u3002fputc\u2014\u2014\u95ee\u9898\u51fa\u73b0\u5728\u8fd9\uff0c\u5206\u914d\u5185\u5b58\u7f13\u51b2\u533a\uff08\u4e00\u4e2a\u9875\u9762\u5927\u5c0f4k\uff09\uff0c\u5199\u5165\u5b57\u7b26\u201cZ\u201d\u3002\u6ce8\u610f\uff0c\u8fd9\u91cc\u5e76\u6ca1\u6709\u52a0\u8f7d\u6587\u4ef6\u6d41\uff0c\u800c\u4ec5\u4ec5\u662f\u5728\u5206\u914d\u7684\u5185\u5b58\u7f13\u51b2\u533a\u4e0a\u76f4\u63a5\u5199\u5165\u4e86\u5b57\u7b26\u201cZ\u201d\uff0c\u7b49\u5230\u201c\u5fc5\u8981\u7684\u65f6\u5019\u201d\u7cfb\u7edf\u4f1a\u81ea\u52a8\u5730\u5237\u65b0\u8fd9\u79cd\u53d8\u5316\u5230\u786c\u76d8\u4e0a\u771f\u6b63\u7684\u6587\u4ef6\u4e2d\u53bb\u3002
\n\u5f88\u9057\u61be\u7684\u662f\uff0c\u57284K\u7684\u5185\u5b58\u7f13\u51b2\u533a\u4e2d\u4ec5\u4ec5\u5199\u5165\u4e86\u4e00\u4e2abyte\uff0c\u7cfb\u7edf\u5e76\u4e0d\u89c9\u5f97\u5e94\u8be5\u5237\u65b0\uff0c\u5b83\u5728\u7b49\u5f85\u66f4\u591a\u7684\u5199\u5165\u64cd\u4f5c\uff0c\u7136\u540e\u518d\u5237\u65b0\uff0c\u4fdd\u8bc1\u6548\u7387\u3002
\n\u56e0\u6b64\u8fd9\u4ee5\u540e\u7684\u5faa\u73affgetc\u3001printf\u2014\u2014\u662f\u5728\u64cd\u4f5c\u6ca1\u6709\u771f\u6b63\u4ece\u6587\u4ef6\u4e2d\u52a0\u8f7d\u6587\u4ef6\u6d41\u7684\u5185\u5b58\u7f13\u51b2\u533a\uff0c\u9664\u4e86\u5199\u5165\u4e86\u5b57\u7b26\u201cZ\u201d\uff0c\u5269\u4e0b\u7684\u90e8\u5206\uff084K-1byte\uff09\u90fd\u662f\u672a\u521d\u59cb\u5316\u7684\uff0c\u663e\u793a\u51fa\u6765\u5c31\u662f\u201c\u5c6f\u201d\u7684\u5b57\u6837\u3002<\/p>\n

\u7efc\u4e0a\u6240\u8ff0\uff0c\u697c\u4e3b\u8981\u89e3\u51b3\u95ee\u9898\u7684\u5173\u952e\u5c31\u662f\u5e94\u8be5\u5728fputc\u548c\u5faa\u73affgetc\u3001printf\u4e4b\u524d\u5237\u65b0\u7f13\u51b2\u533a\uff0c\u5982fflush\uff0c\u8fd9\u6837\u5c31\u80fd\u6b63\u786e\u5730\u52a0\u8f7d\u5e76\u7ef4\u62a4\u6587\u4ef6\u6d41\u4e86\u3002<\/p>\n

\u539f\u5e16\u5730\u5740\uff1ahttp:\/\/topic.csdn.net\/u\/20110506\/20\/adf1798c-3868-4085-89eb-36454ff3745a.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\u4eca\u5929\u51cc\u6668\u65e0\u804a\u901bCSDN\u8bba\u575b\u7684\u65f6\u5019\u53d1\u73b0\u4e86\u8fd9\u6837\u4e00\u4e2a\u5e16\u5b50\uff1a \u697c\u4e3b\u4f7f\u7528fopen\u7cfb\u5217\u51fd\u6570\u4ee5\u201cr+\u201d\u7684\u6a21\u5f0f\u6253\u5f00\u4e00\u4e2a\u5199\u6709\u201c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-645","post","type-post","status-publish","format-standard","hentry","category-cplusplus"],"_links":{"self":[{"href":"http:\/\/115.29.108.60\/index.php?rest_route=\/wp\/v2\/posts\/645","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/115.29.108.60\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/115.29.108.60\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/115.29.108.60\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/115.29.108.60\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=645"}],"version-history":[{"count":4,"href":"http:\/\/115.29.108.60\/index.php?rest_route=\/wp\/v2\/posts\/645\/revisions"}],"predecessor-version":[{"id":932,"href":"http:\/\/115.29.108.60\/index.php?rest_route=\/wp\/v2\/posts\/645\/revisions\/932"}],"wp:attachment":[{"href":"http:\/\/115.29.108.60\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/115.29.108.60\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=645"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/115.29.108.60\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}