/* * clock - continually print the time of day */ main() { register char *tp; int tim[2]; extern int stop(); setexit(); signal(3, &stop); time(tim); tp = ctime(tim)+11; printf("\n\t%8.8s\t", tp); while (1) { time(tim); tp = ctime(tim)+11; printf("%8.8s\b\b\b\b\b\b\b\b",tp); sleep(1); } } stop() { extern int start(); signal(3, &start); while (1) sleep(3600); } start() { reset(); }