#include <stdio.h>
#include <stdlib.h>


int main(int argc, char ** argv) {
  struct date {short day, month, year;};
  typedef struct date Date;

  // create a recursive data structure
  typedef struct person {
    char * first;
    char * last;
    Date birthday;
    struct person friend;
  } Person;


  // create and initialize a person
  Person john = { "John", "Smith", { 4, 7, 1776 }};
  printf("john: %s %s, %02d/%02d/%04d\n", john.first, john.last,
	 john.birthday.month, john.birthday.day, john.birthday.year);


}