sendsignal
int sendsignal;
sendsignal = 0;
sendsignal = 1;
if (sendsignal) {
while (sendsignal(sig) != -1 && (w = wait((int *)0)) != otherpid &&
static int sendsignal(int);
sendsignal(joinsig);
while (sendsignal(SIGKILL) != -1 && (w = wait((int *)0)) != otherpid &&