using System;

public class Test
{
	struct Foo {
		public int A {get;set;}
		public void SetA(int a) {
			A = a;
		}
	}
	
	class Bar {
		Foo f;
		public Foo F {get{return f;} set {f = value;}}
		public void SetFooA(int x) {
			f.SetA(x);
		}
	}
	
	public static void Main()
	{
		Bar b = new Bar();
		b.F.SetA(123);
		Console.WriteLine("{0}", b.F.A);
		b.SetFooA(456);
		Console.WriteLine("{0}", b.F.A);
		b.F = new Foo { A = 112233 };
		Console.WriteLine("{0}", b.F.A);
	}
}