C# grammar[1]

namespace sa
{
	public class A
	{
		public static void f()
		{
		}
		public void g()
		{
		}
		static void Main()
		{
			f();
			A a=new A();
			a.g();
		}
	}

	class OuterClass
	{
		public static int y = 100;
		public int x=23;
		public class NestedClass
		{
			int i=y;
                        public void t()
                        {
			         OuterClass b=new OuterClass();
			         int j=b.x;
                        }
		}
	}
}