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libsrc.lzh
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StdIO
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fgetc.c
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C/C++ Source or Header
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1990-04-07
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1KB
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45 lines
/*
* Libraries and headers for PDC release 3.3 (C) 1989 Lionel Hummel.
* PDC Software Distribution (C) 1989 Lionel Hummel and Paul Petersen.
* PDC I/O Library (C) 1987 by J.A. Lydiatt.
*
* This code is freely redistributable upon the conditions that this
* notice remains intact and that modified versions of this file not
* be included as part of the PDC Software Distribution without the
* express consent of the copyright holders. No warrantee of any
* kind is provided with this code. For further information, contact:
*
* PDC Software Distribution Internet: BIX:
* P.O. Box 4006 or hummel@cs.uiuc.edu lhummel
* Urbana, IL 61801-8801 petersen@uicsrd.csrd.uiuc.edu
*/
/* getc.c
*
* Performs single-character buffered I/O
*/
#include <stdio.h>
extern int _filebfill();
int fgetc(fp)
FILE *fp;
{
if ( fp->_filecpos >= fp->_fileend )
return _filebfill( fp );
return (*fp->_filecpos++ & 0xFF);
}
int ungetc(c, fp )
char c;
FILE *fp;
{
if ( c == EOF || fp->_filecpos <= fp->_filebufp )
return EOF;
*--fp->_filecpos = c;
return (c);
}