alarmhandler
void alarmhandler(int sig);
signal(SIGALRM, alarmhandler);
signal(SIGALRM, alarmhandler);
signal(SIGALRM, alarmhandler);
savealrm = signal(SIGALRM, alarmhandler);
static void alarmhandler(int _signo);
savealrm = signal(SIGALRM, alarmhandler);
static void alarmhandler(int _signo);
static void alarmhandler(int _signo);
savealrm = signal(SIGALRM, alarmhandler);
savealrm = signal(SIGALRM, alarmhandler);