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linux c ÏÂÊÇÄܹ»Ê¹ÓÃfopen ºÍfclose Á½¸öº¯Êý´ò¿ªÎļþ, ³öÏÖ´íÎó, ²éһϲÎÊýÓÐûÓжÔ.

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#include <stdio.h>

FILE *fopen(const char *path, const char *mode);

The argument mode points to a string beginning with one of the following sequences (Additional  characters  may follow these sequences.):

      r      Open text file for reading.  The stream is positioned at the beginning of the file.

      r+    Open for reading and writing.  The stream is positioned at the beginning of the file.

      w      Truncate file to zero length or create text file for writing.  The stream is positioned at the beginning of the file.

      w+    Open for reading and writing.  The file is cr


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