#include <stdio.h>
#include <assert.h>

struct dates_s {
  int month;
  int day;
  int year;
};

void showdate(struct dates_s *date)
{
  assert(date != NULL);
  printf("Date = %02i/%02i/%4i\n",date->month,date->day,date->year);
}

int main(void)
{
  struct dates_s date;
  
  date.month = 1;
  date.day = 27;
  date.year = 2004;
  showdate(&date);
}