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libs/date_time/example/gregorian/dates_as_strings.cpp

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+/* The following is a simple example that shows conversion of dates 
+ * to and from a std::string.
+ * 
+ * Expected output:
+ * 2001-Oct-09
+ * 2001-10-09
+ * Tuesday October 9, 2001
+ * An expected exception is next: 
+ * Exception: Month number is out of range 1..12
+ */
+
+#include "boost/date_time/gregorian/gregorian.hpp"
+#include <iostream>
+#include <string>
+
+int
+main() 
+{
+
+  using namespace boost::gregorian;
+
+  try {
+    // The following date is in ISO 8601 extended format (CCYY-MM-DD)
+    std::string s("2001-10-9"); //2001-October-09
+    date d(from_simple_string(s));
+    std::cout << to_simple_string(d) << std::endl;
+    
+    //Read ISO Standard(CCYYMMDD) and output ISO Extended
+    std::string ud("20011009"); //2001-Oct-09
+    date d1(from_undelimited_string(ud));
+    std::cout << to_iso_extended_string(d1) << std::endl;
+    
+    //Output the parts of the date - Tuesday October 9, 2001
+    date::ymd_type ymd = d1.year_month_day();
+    greg_weekday wd = d1.day_of_week();
+    std::cout << wd.as_long_string() << " "
+              << ymd.month.as_long_string() << " "
+              << ymd.day << ", " << ymd.year
+              << std::endl;
+
+    //Let's send in month 25 by accident and create an exception
+    std::string bad_date("20012509"); //2001-??-09
+    std::cout << "An expected exception is next: " << std::endl;
+    date wont_construct(from_undelimited_string(bad_date));
+    //use wont_construct so compiler doesn't complain, but you wont get here!
+    std::cout << "oh oh, you shouldn't reach this line: " 
+              << to_iso_string(wont_construct) << std::endl;
+  }
+  catch(std::exception& e) {
+    std::cout << "  Exception: " <<  e.what() << std::endl;
+  }
+
+
+  return 0;
+}
+
+/*  Copyright 2001-2004: CrystalClear Software, Inc
+ *  http://www.crystalclearsoftware.com
+ *
+ *  Subject to the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+ */
+