// filename:c2011-6-10-ex.c
// original examples and/or notes:
// 		(c) ISO/IEC JTC1 SC22 WG14 N1570, April 12, 2011
// http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf
// 			C2011 6.10 Preprocessing directives
// compile and output mechanism:
// 		(c) Ogawa Kiyoshi, kaizen@gifu-u.ac.jp, December.xx, 2013
// compile errors and/or wornings:
// 1	(c) Apple LLVM version 4.2 (clang-425.0.27) (based on LLVM 3.2svn)
// 			Target: x86_64-apple-darwin11.4.2 //Thread model: posix
// 		(c) LLVM 2003-2009 University of Illinois at Urbana-Champaign.
// 2    gcc-4.9 (GCC) 4.9.0 20131229 (experimental)
//      Copyright (C) 2013 Free Software Foundation, Inc.
#include <stdio.h>
// Example 
#define EMPTY
EMPTY # include <file.h> //**
// 1, cc(LLVM) c2011-6-10-ex.c:14:7: error: expected identifier or '('
//EMPTY # include <file.h>
//      ^
//1 error generated.
//
// 2. (gcc-4.9) c2011-6-10-ex.c:14:7: error: stray '#' in program
// EMPTY # include <file.h> //**
//       ^
//c2011-6-10-ex.c:14:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
// EMPTY # include <file.h> //**
//                 ^
int main(void)
{
return printf("6.10 Preprocessing directives \n");	
}
// output may be
// 6.10 Preprocessing directives