extracting data from 2 xml tags(opening and ending) using libxml2 xpath

this is the tag in xml

<content>The Avengers</content>

i want to take out "The Avengers" from the tag using xpath from libxml2 in c++

Here is my code

xmlXPathObject * xpathObj = xmlXPathEvalExpression( (xmlChar*)"/content", xpathCtx );
    if ( xpathObj == NULL ) throw "failed to evaluate xpath";


    for(int i=0;i<=0; i++)
        {
        xmlNode *node = NULL;
        if ( xpathObj->nodesetval && xpathObj->nodesetval->nodeTab )
            {
            node = xpathObj->nodesetval->nodeTab[i];
            std::cout << "Found the node we want" << std::endl;
            }
        else
            {throw "failed to find the expected node";}

        xmlAttr *attr = node->properties;
        while ( attr )
            {
            std::cout << "Attribute name: " << attr->name << "  value: " << attr->children->content << std::endl;
            attr = attr->next;
            }
xmlSetProp( node, (xmlChar*)"age", (xmlChar*)"3" );
        }

its work fine and reached easily at content tag but not showing the data between the tag

RESULT

<content age="3">The Avengers</content>

but in console its shows nothing Thanks