/***************************************************************************
 * date.c
 * Unit 3.1 
 * Demonstrates use of enums and structs
 ***************************************************************************/
#include <stdio.h>
#include <stdbool.h>

typedef enum Month { January = 1, February, March, April, May, June, July, August, 
		      September, October, November, December } Month;
typedef struct Date {
  Month month;
  int day;
  int year;
} Date;

const int daysPerMonth[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

/* function prototypes */
void printDate(Date date);
bool isLeapYear(int year);

int main()
{
  Date today;
  Date tomorrow;

  printf("Enter today's date (mm dd yyyy without leading zeros): ");
  scanf ("%i%i%i", &today.month, &today.day, &today.year);

  bool leap = isLeapYear(today.year);

  if (leap && today.month == February) {
    if (today.day == 29) {
      tomorrow.day = 1;
      tomorrow.month = March;
    } else if (today.day == 28) {
      tomorrow.day = 29;
      tomorrow.month = today.month;
    }
    tomorrow.year = today.year;
  } 
 
  /* set tomorrow based on what today is */
  if (today.day != daysPerMonth[today.month-1]) {
    tomorrow.day = today.day + 1;
    tomorrow.month = today.month;
    tomorrow.year = today.year;
  } else if (today.month == December) { // end of year
    tomorrow.day = 1;
    tomorrow.month = January;
    tomorrow.year = today.year + 1;
  } else { // end of month
    tomorrow.day = 1;
    tomorrow.month = today.month + 1;
    tomorrow.year = today.year;
  }

  printf("Tomorrow is ");
  printDate(tomorrow);
}

bool isLeapYear(int year) 
{
  
}

/* print date */
void printDate(Date date)
{
  switch(date.month) {
  case January:
    printf("January");
    break;
  case February:
    printf("February");
    break;
  case March:
    printf("March");
    break;
  case April:
    printf("April");
    break;
  case May:
    printf("May");
    break;
  case June:
    printf("June");
  case July:
    printf("July");
  case August:
    printf("August");
    break;
  case September:
    printf("September");
    break;
  case October:
    printf("October");
    break;
  case November:
    printf("November");
    break;
  case December:
    printf("December");
    break;
  default:
    printf("Invalid month");
  }
  printf (" %d, %d\n ", date.day, date.year);
}