#include <stdio.h>
#include <stdlib.h>
#include <libxml/parser.h>

int main(int argc, char *argv[]) {

    const char *filename = argv[1];
    xmlDocPtr doc;
    xmlNodePtr root, node;

    // return "file handle" to read the file
    doc = xmlParseFile(filename);

    if (doc == NULL) {
        fprintf(stderr, "Unable to parse data\n");
        xmlFreeDoc(doc);
        exit (1);
    } else {
        puts("Data parsed successfully");
    }

    // return pointer to the root element
    root = xmlDocGetRootElement(doc);

    if (root == NULL) {
        fprintf(stderr, "Can't read data\n");
        xmlFreeDoc(doc);
        exit (1);
    } else {
        printf("Root node is '%s'\n", root->name);
    }

    if (root->children) {
        printf("Child nodes:\n");
        for (node = root->children; node; node = node->next) {
            if (node->type == XML_ELEMENT_NODE) {
                printf("\t%s\n", node->name);
            }
        }
    }
    xmlFreeDoc(doc);

    return EXIT_SUCCESS;
}