#include <u.h>
#include <libc.h>
/* Written by Rob Pike, this is just a copy for exemplification */
typedef int ☺☹☻;
typedef void ☹☺☻;
enum
{
	☹☻☺ = sizeof(☺☹☻),
	☻☺☹ = sizeof(☹☺☻),
};

☹☺☻
main(☹☺☻)
{
	☺☹☻ ☺☻☹;

	for(☺☻☹=☻☺☹; ☺☻☹<☹☻☺; ☺☻☹++)
		print("☺☻☹ = %d\n", ☺☻☹);
		exits(☻☺☹);
}