#include <stdio.h>
#include <sys/wait.h>
#include <stdlib.h>

int
main ()
{
  pid_t child_pid;
  int status;
  int i;
  for (i = 0; i < 2; i++)
    {
      child_pid = fork ();

      if (child_pid >= 0)	/* fork succeeded */
	{
	  if (child_pid == 0)	/* fork() returns 0 for the child process */
	    return i;
	  else			/* parent process */
	    {
	      wait (&status);
	      printf ("Child exit code: %d\n", WEXITSTATUS (status));
	    }
	}
      else			/* failure */
	{
	  perror ("fork");
	  exit (0);
	}
    }
}