ADD: new track message, Entity class and Position class

libs/geographiclib/examples/example-DMS.cpp

@@ -0,0 +1,29 @@
+// Example of using the GeographicLib::DMS class
+
+#include <iostream>
+#include <string>
+#include <exception>
+#include <GeographicLib/DMS.hpp>
+
+using namespace std;
+using namespace GeographicLib;
+
+int main() {
+  try {
+    {
+      string dms = "30d14'45.6\"S";
+      DMS::flag type;
+      double ang = DMS::Decode(dms, type);
+      cout << type << " " << ang << "\n";
+    }
+    {
+      double ang = -30.245715;
+      string dms = DMS::Encode(ang, 6, DMS::LATITUDE);
+      cout << dms << "\n";
+    }
+  }
+  catch (const exception& e) {
+    cerr << "Caught exception: " << e.what() << "\n";
+    return 1;
+  }
+}