Member is not a structure or union

When I compile this demo code I was told I had an error where I didn't define n. Now I tried to define n as an int but it tells me this error. I also had the same problem with using char. Is this meant to be a string instead and if so how do I define it?

src/main.cpp:22:32: error: member reference base type 'char' is not a structure or union
    auto found = tagmaps.find(n.name());
                              ~^~~~~
src/main.cpp:49:24: error: member reference base type 'char' is not a structure or union
        found = tagmaps.find(n.name());
                             ~^~~~~

This is my full code:

#include "pugi/pugixml.hpp"

#include <iostream>
#include <string>
#include <map>

int main()
{

    // Define mappings, default left - map on the right
    const std::map<std::string, std::string> tagmaps
    {
        {"id", "id"}
        , {"description", "content"}
    }
    int n;
    pugi::xml_document doca, docb;
    auto found = tagmaps.find(n.name());
    std::map<std::string, pugi::xml_node> mapa, mapb;

    if (!doca.load_file("a.xml") || !docb.load_file("b.xml")) { 
        std::cout << "Can't find input files";
        return 1;
    }

    for (auto& node: doca.child("data").children("entry")) {
    const char* id = node.child_value("id");
    mapa[id] = node;
    }

    for (auto& node: docb.child("data").children("entry")) {
    const char* idcs = node.child_value("id");
        if (!mapa.erase(idcs)) {
        mapb[idcs] = node;
        }
    }

    for (auto& ea: mapa) {
    std::cout << "Removed:" << std::endl;
    ea.second.print(std::cout);
    }

    for (auto& eb: mapb) {
    // change node name if mapping found
    found = tagmaps.find(n.name());
        if((found != tagmaps.end()) {
        n.set_name(found->second.c_str());
        }
    }

EDIT: This code is meant to check if any of the node names match what is defined in the map, i.e it would look for any nodes called id and content