#include <stdio.h>

main()     
{          
  int i, n=4, filhoID;

  for (i= 1; i<n; i++)
    if ((filhoID=fork()) == 0)
      break;
  fprintf(stderr,"proc(\%ld) com pai(\%ld)\n", 
          (long)getpid(), (long)getppid());
}