#include <stdio.h>
#include <string.h>


/* C 庫函式 int feof(FILE *stream) 測試給定流 stream 的檔案結束識別符號。 */


int main( void )
{
	unsigned char	tmp;

	FILE	*infp;
	FILE	*outfp;


	infp	= fopen( "in.txt", "r" );
	outfp	= fopen( "out.txt", "wb" );

	/* 這邊要先讀再判斷，不然會多出一個位元組 */
	fscanf( infp, "%X",
 
 &tmp );

	while ( !feof( infp ) )
	{
		putc(tmp,outfp);
		fscanf( infp, "%X", &tmp );
	}

	fclose( infp );
	fclose( outfp );

	return(0);
}