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typedef struct {
int level; /* fill/empty level of buffer */
unsigned flags; /* File status flags */
char fd; /* File descriptor */
unsigned char hold; /* Ungetc char if no buffer */
int bsize; /* Buffer size */
unsigned char _FAR *buffer; /* Data transfer buffer */
unsigned char _FAR *curp; /* Current active pointer */
unsigned istemp; /* Temporary file indicator */
short token; /* Used for validity checking */
} FILE; /* This is the FILE object */
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fclose() ¹Ø±ÕÁ÷ 
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fgetc() ´ÓÁ÷ÖжÁÒ»¸ö×Ö·û 
fseek() ÔÚÁ÷Öж¨Î»µ½Ö¸¶¨µÄ×Ö·û 
fputs() д×Ö·û´®µ½Á÷ 
fgets() ´ÓÁ÷ÖжÁÒ»ÐлòÖ¸¶¨¸ö×Ö·û 
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fscanf() ´ÓÁ÷Öа´¸ñʽ¶ÁÈ¡ 
feof() µ½´ïÎļþβʱ·µ»ØÕæÖµ 
ferror() ·¢Éú´íÎóʱ·µ»ØÆäÖµ 
rewind() ¸´Î»Îļþ¶¨Î»Æ÷µ½Îļþ¿ªÊ¼´¦ 
remove() ɾ³ýÎļþ 
fread() ´ÓÁ÷ÖжÁÖ¸¶¨¸öÊýµÄ×Ö·û 
fwrite() ÏòÁ÷ÖÐдָ¶¨¸öÊýµÄ×Ö·û 
tmpfile() Éú³ÉÒ»¸öÁÙʱÎļþÁ÷ 
tmpnam() Éú³ÉÒ»¸öΨһµÄÎļþÃû 
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