//  Columbus.m  Copyright (c) Kari Laitinen

//  http://www.naturalprogramming.com

//  2013-07-11  Objective-C version of this file was created.
//  2013-07-12  Last modification.

#include  <stdio.h>
#import   <Foundation/Foundation.h>
#import   "class_isodate_oc.h"

int main( void )
{
   NSAutoreleasePool* autorelease_pool = [ [ NSAutoreleasePool alloc ] init ] ;

   ISODate*  date_of_discovery_of_america =
               [ [ ISODate alloc ] init_with_string: @"1492-10-12" ] ;

   ISODate*  date_of_first_moon_landing =
               [ [ ISODate alloc ] init_with_string: @"1969-07-20" ] ;

   NSString* text_to_print =
      [ NSString stringWithFormat:

         @"\n   Christopher Columbus discovered America on %@"
         @"\n   That was a %@",
         date_of_discovery_of_america,
         [ date_of_discovery_of_america  get_day_of_week ]
      ] ;
           
   printf( "%s", [ text_to_print UTF8String ] ) ;


   text_to_print =
      [ NSString stringWithFormat:
      
         @"\n\n   Apollo 11 landed on the moon on %@"
         @"\n   That was a %@",
         date_of_first_moon_landing,
         [ date_of_first_moon_landing  get_day_of_week ]
      ] ;

   printf( "%s", [ text_to_print UTF8String ] ) ;
           

   int  years_between, months_between, days_between ;


   [ date_of_discovery_of_america get_distance_to: date_of_first_moon_landing
                                      years: &years_between
                                      months: &months_between
                                      days:   &days_between  ] ;

   printf(  "\n\n   America was discovered %d years, %d months, and "
            "%d days \n   before the first moon landing.\n\n",
            years_between, months_between, days_between ) ;


   [ autorelease_pool drain ] ;
}