What does default(object); do in C#?

Question

Googling is only coming up with the keyword, but I stumbled across some code that says

MyVariable = default(MyObject);

and I am wondering

Answer 1

default keyword will return null for reference types and zero for numeric value types.

For structs, it will return each member of the struct initialized to zero or null depending on whether they are value or reference types.

from MSDN

Simple Sample code :

    class Foo
    {
        public string Bar { get; set; }
    }

    struct Bar
    {
        public int FooBar { get; set; }
        public Foo BarFoo { get; set; }
    }

    public class AddPrinterConnection
    {
        public static void Main()
        {

            int n = default(int);
            Foo f = default(Foo);
            Bar b = default(Bar);

            Console.WriteLine(n);

            if (f == null) Console.WriteLine("f is null");

            Console.WriteLine("b.FooBar = {0}",b.FooBar);

            if (b.BarFoo == null) Console.WriteLine("b.BarFoo is null");

        }
    }

OUTPUT:

0
f is null
b.FooBar = 0
b.BarFoo is null