using System;
using System.IO;
using System.Xml;
public class Sample {
public static void Main() {
XmlDocument doc = new XmlDocument();
doc.LoadXml("" +
"C# " +
" ");
XmlNode root = doc.DocumentElement;
XmlElement elem = doc.CreateElement("price");
elem.InnerText="9.9";
root.AppendChild(elem);
doc.Save(Console.Out);
}
}