== Handling UNIX signals ==

{{{
/* - shows how a signal handler works.
 * - run this and press Ctrl-C a few times
 */

#include	<stdio.h>
#include	<signal.h>

main()
{
	void	f(int);			/* declare the handler	*/
	int	i;

	signal( SIGINT, f );		/* install the handler	*/
	for(i=0; i<5; i++ ){		/* do something else	*/
		printf("hello\n");
		sleep(1);
	}
}

void f(int signum)			/* this function is called */
{
	printf("OUCH!\n");
}
}}}