C++ Use Boost property_tree to manipulate xml files

#include "pch.h"
#include <iostream>
#include <string>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>

using namespace std;
int main()
{
 string path = "C:\\Work\\Students.xml";
 string path2 = "C:\\Work\\Students2.xml";
 try
 {
  std::cout << "Using property tree to manipulate XML files\n";
  //how to load an xml file
  boost::property_tree::ptree pt;
  read_xml(path, pt);

  boost::property_tree::ptree& Students = pt.get_child("Students");

  //how to remove a node using Id
  for (auto it = Students.begin(); it != Students.end();)
  {
   int id = it->second.get(".Id");
   if (id == 1)
   {
    it = Students.erase(it);
    
   }
   else
   {
    ++it;
   }
  }
  //how to add nodes
  for (auto data : { 3, 4, 5 })
  {
   boost::property_tree::ptree& Student = Students.add("Student", "");
   Student.add(".Id", data);
   Student.add("LastName", "McDonalds");
   Student.add("FirstName", "Robert");
  }

  //how to save
  write_xml(path2, pt, std::locale(), boost::property_tree::xml_writer_make_settings('\t', 1));

 }
 catch (exception e)
 {
  string s = e.what();
  std::cout << s;
 }
}