miscellaneous/motionbuilder_shelf/module/pugixml/docs/samples/save_declaration.cpp
#include "pugixml.hpp"
#include <iostream>
int main()
{
doc.load_string("<foo bar='baz'><call>hey</call></foo>");
pugi::xml_node decl = doc.prepend_child(pugi::node_declaration);
decl.append_attribute("version") = "1.0";
decl.append_attribute("encoding") = "UTF-8";
decl.append_attribute("standalone") = "no";
doc.save(std::cout);
std::cout << std::endl;
}