// Test Random class.
static void Main(string[] args)
    {
    // Create Random object.  Choose a key based 
    // on the computer's time of day clock.
    Random r = new Random();

    // Create Random object, specifying the seed
    // explicitly.
    Random s = new Random(28347463);

    // Test the Next and NextDouble methods for r.
    // We need to call these methods several times
    // to see if the returned random numbers are in
    // the correct ranges.
    for (int i = 1; i <= 20; i++)
    {
        Console.WriteLine(r.Next(3, 8) + " " + 
            r.Next(4) + " " + r.NextDouble());
    }

    // Test the Next and NextDouble methods for r.
    for (int i = 1; i <= 20; i++)
    {
        Console.WriteLine(r.Next(3, 8) + " " + 
            r.Next(4) + " " + r.NextDouble());
    }

    Console.ReadLine();
}