rewind---reinitialize a file or streamSynopsis
#include <stdio.h> void rewind(FILE *fp);
Description
rewind returns the file position indicator (if any) for the file
or stream identified by fp to the beginning of the file. It also
clears any error indicator and flushes any pending output.
Returns
rewind does not return a result.
Portability
ANSI C requires rewind.
No supporting OS subroutines are required.
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