#include	<signal.h>
#include <stdio.h>
/*#include	"ourhdr.h"*/

static void	sig_usr(int);	/* one handler for both signals */

void  err_sys(char * msg) {
  printf("%s \n", msg);
  exit(-1); 
}


int
main(void)
{
	if (signal(SIGUSR1, sig_usr) == SIG_ERR)
		err_sys("can't catch SIGUSR1");
	if (signal(SIGUSR2, sig_usr) == SIG_ERR)
		err_sys("can't catch SIGUSR2");

	for ( ; ; )
		pause();
}

static void
sig_usr(int signo)		/* argument is signal number */
{
	if (signo == SIGUSR1)
		printf("received SIGUSR1\n");
	else if (signo == SIGUSR2)
		printf("received SIGUSR2\n");
	else
		err_sys("received unexpected signal");
	return;
}