Move existing examples into a C++03-specific directory, and add a new

directory for C++11-specific examples. A limited subset of the C++03
examples have been converted to their C++11 equivalents.


[SVN r84312]

example/cpp03/tutorial/timer3/timer.cpp

@@ -0,0 +1,44 @@
+//
+// timer.cpp
+// ~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <iostream>
+#include <boost/asio.hpp>
+#include <boost/bind.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+
+void print(const boost::system::error_code& /*e*/,
+    boost::asio::deadline_timer* t, int* count)
+{
+  if (*count < 5)
+  {
+    std::cout << *count << "\n";
+    ++(*count);
+
+    t->expires_at(t->expires_at() + boost::posix_time::seconds(1));
+    t->async_wait(boost::bind(print,
+          boost::asio::placeholders::error, t, count));
+  }
+}
+
+int main()
+{
+  boost::asio::io_service io;
+
+  int count = 0;
+  boost::asio::deadline_timer t(io, boost::posix_time::seconds(1));
+  t.async_wait(boost::bind(print,
+        boost::asio::placeholders::error, &t, &count));
+
+  io.run();
+
+  std::cout << "Final count is " << count << "\n";
+
+  return 0;
+}