#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xmlreader.h>
static void
print_element_names(xmlNode * a_node, xmlDoc *doc)
{
    xmlNode *cur_node = NULL;
    for (cur_node = a_node; cur_node; cur_node = cur_node->next) {
        if (cur_node->type == XML_ELEMENT_NODE) {
            printf("node type: Element, name: %s %s\n", cur_node->name, xmlTextReaderConstValue(doc) );
        }
         print_element_names(cur_node->children, doc);
    }
}
 
int
main(int argc, char **argv)
{
    xmlDoc *doc = NULL;
    xmlNode *root_element = NULL;
    if (argc !=  2 )  return( 1 );
    LIBXML_TEST_VERSION
    doc = xmlReadFile(argv[ 1 ], NULL,  0 );
    if (doc == NULL) {
        printf("error: could not parse file %s\n", argv[ 1 ]);
    }
    root_element = xmlDocGetRootElement(doc);
    print_element_names(root_element, doc);
    xmlFreeDoc(doc);
    xmlCleanupParser();
    return  0 ;
}