using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
public class MainClass
{
public static void Main()
{
XmlReader reader;
double totalPrice=0;
reader = XmlReader.Create("pubs.xml");
while (reader.Read())
{
if (reader.IsStartElement() && reader.Name=="titles")
{
reader.MoveToAttribute("price");
totalPrice += reader.ReadContentAsDouble();
}
}
}
}