#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>

sig_atomic_t count = 0;

void handler (int signal_number) {
  count++;
}

void handler2 (int signal_number) {
  if(count >= 10) {
    printf("You have counted too many digits.\n"
           "You wanted %d and you can only use 9.\n"
           "I can't just grow an extra finger or toe people. Start over.\n",count);
    count = 0;
    }
  else {
      printf("%d\n",count);
    count = 0;
    }
}

void handler3 (int signal_number) {
  printf("Liar! It is not dead (just wounded).\n") ;
}


int main(int argc, char ** argv) {
  struct sigaction sa1, sa2, sa3;
  int pid;
  memset (&sa1, 0, sizeof (sa1));
  sa1.sa_handler = &handler;
  sigaction(SIGUSR1,&sa1,NULL);

  memset (&sa2,0,sizeof(sa2));
  sa2.sa_handler = &handler2;
  sigaction(SIGUSR2,&sa2,NULL);

  memset (&sa3,0,sizeof(sa2));
  sa3.sa_handler = &handler3;
  sigaction(SIGCHLD,&sa3,NULL);

  pid = fork();
  if (pid != 0) {
    for(;;) {
      sleep(1000);
      //printf("I'm awake, where's the coffee\n");
    }
  }
  else {
    for(;;);
  }
  wait(pid);
}