/* Copyright (C) 2008-2010 Nick Bowler
 *
 * License WTFPL2: Do What The Fuck You Want To Public License, version 2.
 * This is free software: you are free to do what the fuck you want to.
 * There is NO WARRANTY, to the extent permitted by law.
 *
 * This is, to the best of my knowledge, a strictly conforming ANSI C
 * (C89) program which is not a C++ program.  This proves by counter-
 * example that C++ is not a superset of C.
 *
 * Some of the "techniques" used in this file are stupid legacy features.
 * Please don't take this as an example of a well-written C program.
 *
 * The output of this program should be:
 *   The old answer was 42, but the new answer is 54.
 *
 * There are more than 10 different things wrong with this program if you
 * consider it as C++.  Can you spot them all?  This is not valid C99 for
 * a few of these reasons.  For now, it is pointless to update this to
 * C99 -- there are just too many obvious incompatibilities.
 */

#include <stdlib.h>
#include <stdio.h>

#define and 42
#define or  54

static struct baz {
	struct foo {
		enum {
			ANSWER1 = and,
			ANSWER2 = or,
			ANSWER3 = -ANSWER1
		} val;
	} foo;
};

const int foo;
typedef int baz();
baz main;

int main(argc, argv)
	int    argc;
	char **argv;
{
	struct foo foo = { 0 };
	int *new;

	if (argc >= foo.val) {
		return main(bar(), argv);
	}

	goto assign;
	{
		int old = 0;
	assign:
		old = -argc;

		new = malloc(sizeof 'x');
		if (!new) {
			perror("malloc");
			return EXIT_FAILURE;
		}

		*new = ANSWER2;
		printf("The old answer was %d, but the new answer is %d.\n",
		                                                  old, *new);
		free(new);
	}

	return 0;
}

bar()
{
	return (enum{X = ANSWER3})-X//**/-1
		;
}