using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
class Program
{
static void Main(string[] args)
{
FileStream aFile = new FileStream("Log.txt", FileMode.OpenOrCreate);
StreamWriter sw = new StreamWriter(aFile);
bool truth = true;
sw.WriteLine("Hello to you.");
sw.WriteLine("It is now {0} and things are looking good.",DateTime.Now.ToLongDateString());
sw.Write("More than that,");
sw.Write(" it's {0} that C# is fun.", truth);
sw.Close();
}
}