C#

using System;<br />
<br />
class DelegateDemo<br />
{<br />
    delegate String DelegateAbc(String txt);<br />
<br />
    public String TestAbc(String txt)<br />
    {<br />
        Console.WriteLine(txt);<br />
        return "Hello from TestAbc";<br />
    }<br />
    public static String TestStatic(String txt)<br />
    {<br />
        Console.WriteLine(txt);<br />
        return "Hello from TestStatic";<br />
    }<br />
    static void Main()<br />
    {<br />
        DelegateDemo t1 = new DelegateDemo();<br />
        DelegateAbc d1 = new DelegateAbc(t1.TestAbc);<br />
        Console.WriteLine(d1("First call"));<br />
        d1 = new DelegateAbc(DelegateDemo.TestStatic);<br />
        Console.WriteLine(d1("Second call"));<br />
        <br />
        cow asdd = new cow();<br />
        asdd.setter();<br />
        Console.ReadLine();<br />
    }<br />
<br />
<br />
<br />
    public class moo<br />
    {<br />
        string data;<br />
<br />
        Delegateking abc;<br />
        public moo(Delegate lol)<br />
        {<br />
            abc = (Delegateking)lol;<br />
        }<br />
        public void set()<br />
        {<br />
            abc();<br />
            //lol();<br />
        }<br />
    }<br />
    delegate void Delegateking();<br />
    public class cow<br />
    {<br />
        <br />
<br />
        moo hihi;<br />
        public cow()<br />
        {<br />
<br />
            Delegateking lala = new Delegateking(this.setter);<br />
            hihi = new moo(lala);<br />
        }<br />
        public void setter()<br />
        {<br />
            Console.WriteLine("power");<br />
        }<br />
    }<br />
}

<br />
double d = 0.0000001; <br />
Console.WriteLine(d.ToString()); <br />