/*********************************************

Compared to increment_date.cpp, this code also
shows how to write functions to:

- allow the user to enter data for an object
- print out an object.
- make a SHALLOW copy of an object.

*********************************************/

#include <stdio.h>

// note that the structure date is defined in
// the header file.
#include "increment_date2.h"

#include <stdio.h>


struct date increment_date(struct date d1)
{
  struct date result;
  result.day = d1.day;
  result.month = d1.month;
  result.year = d1.year;

  result.day++;
  switch(result.month)
  {
  case 1:
  case 3:
  case 5:
  case 7:
  case 8:
  case 10:
  case 12:
    if (result.day == 32)
    {
      result.day = 1;
      result.month++;
    }
    break;

  case 2:
    if (result.day == 29)
    {
      result.day = 1;
      result.month++;
    }
    break;

  default:
    if (result.day == 30)
    {
      result.day = 1;
      result.month++;
    }
  }

  if (result.month == 13)
  {
    result.month = 1;
    result.year++;
  }

  return result;
}


struct date input_date()
{
  struct date result;
  printf("please enter month day year:\n");

  scanf("%d %d %d", &(result.month), &(result.day), &(result.year));
  return result;
}


void print_date(char * name, struct date d1)
{
  printf("%s = %d/%d/%d\n", name, d1.month, d1.day, d1.year);
}


struct date copy_date(struct date input)
{
  struct date result = input;
  return result;
}


int main(void)
{
  /* date 1 */
  struct date d1 = input_date();

  struct date d2 = increment_date(d1);
  print_date("d1", d1);
  print_date("d2", d2);
}