using System;

using System.Xml.Linq;

using System.Xml;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

            Random rand = new Random();

            XElement xd = new XElement("root",

                new XElement("config", Enumerable.Range(0, 5).Select(x => 

                                                    new XElement("coordinates",

                                                        new XElement("x", rand.Next()),

                                                        new XElement("y", rand.Next()),

                                                        new XAttribute("name", "c" + x)))

                                                        , new XAttribute("name", "params")));

            Console.WriteLine(xd);

    }

}