What does the following C program print [4 points] and why [7 points]? Note that emphasis of this question is on your understanding of the signal functionality. State your assumptions where necessary.

pid_t pid;

void h1(int sig) {

printf("eagle");

kill(pid, SIGUSR2);

}

void h2(int sig) {

printf("sparrow");

exit(0);

}

main() {

signal(SIGUSR2, h1);

if ((pid = fork()) == 0) {

signal(SIGUSR2, h2);

kill(getppid(), SIGUSR2);

while(1) {};

}

else {

pid_t p; int status;

if ((p = wait(&status)) > 0) {

printf("pigeon");

}

}

}