Action (C# delegate)

gistfile1.cs

class Program
{
    static void Main(string[] args)
    {
        int n = 10;
        Action<int> act = (int i) =>
        {
            Console.WriteLine("num is : {0}", n * i);
        };

        act(2);

        n = 30;
        act(2);
        Console.Read();
    }
}