07-28-2011
Hi yazu,
Many thanks for your code.
After I read through and try to understand the logic of your code.
I'm find the following doubts that need your advice:
1. Can I know why you will set "char * pinp = inp+1; char * pref = ref+1;" ?
2. Sad to said that I can't really get the meaning of "rewind(finp);" in the code
This is the first time I deal with "rewind" function.
Many thanks for your advice.
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LEARN ABOUT CENTOS
rewind
REWIND(3P) POSIX Programmer's Manual REWIND(3P)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond-
ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
NAME
rewind - reset the file position indicator in a stream
SYNOPSIS
#include <stdio.h>
void rewind(FILE *stream);
DESCRIPTION
The call:
rewind(stream)
shall be equivalent to:
(void) fseek(stream, 0L, SEEK_SET)
except that rewind() shall also clear the error indicator.
Since rewind() does not return a value, an application wishing to detect errors should clear errno, then call rewind(), and if errno is
non-zero, assume an error has occurred.
RETURN VALUE
The rewind() function shall not return a value.
ERRORS
Refer to fseek() with the exception of [EINVAL] which does not apply.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
fseek(), the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE
/The Open Group 2003 REWIND(3P)