#include "assert.h"
#include "unistd.h"
#include "pthread.h"
#include "wait.h"

void* thready_function()
{
  sleep(10);
  printf("Now I am ending!\n");

  return 0;
}

int main()
{
  pthread_t thready;
  int pid = fork();

  if (pid == 0)
  {
    int pid_child = fork();
    if (pid_child == 0)
    {
      for (int i = 0; i < 10; i++)
        printf("The inner child is printing!\n");
      assert((pthread_create(&thready, NULL, &thready_function, NULL) == 0) && "This should never happen!\n");
      pthread_join(thready, NULL);
    }
    else
    {
      waitpid(pid_child, NULL, NULL);
      printf("The child waited for %d!\n", pid_child);
      for (int i = 0; i < 10; i++)
        printf("The child is printing!\n");
    }
  }
  else
  {
    waitpid(pid, NULL, NULL);
    printf("The parent waited for %d!\n", pid);
  }

  return 0;
}