#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libxml/xmlreader.h>

static int check (int rc)
{
    if (rc == -1) {
        fprintf (stderr, "Error from libxml2, fix your code!\n");
        exit (1);
    }
}

void main ()
{
    char *s = "<doc><elem1 att1='foo1' att2='bar1'/><elem2 att1='foo1' att2='bar2'/></doc>";

    xmlTextReaderPtr xml = xmlReaderForMemory (s, strlen(s), NULL, NULL, 0);

    while (check (xmlTextReaderRead (xml))) {
        printf ("%s\n", xmlTextReaderConstName (xml));
        while (check (xmlTextReaderMoveToNextAttribute (xml)))
            printf (" - %s: %s\n", xmlTextReaderConstName (xml), xmlTextReaderConstValue (xml));
    }
}

/* Compile with gcc -o attributevalue2 attributevalue2.c `pkg-config --cflags --libs libxml-2.0` */