plagiarized from a great book

gistfile1.cs

a
----
static void Main(string[] args)
{
  int a = 13;
  int b = 14;

  int c = a + b;

  Console.WriteLine(c);      
}

b
----
static void Main(string[] args)
{
  dynamic a = 13;
  dynamic b = 14;

  dynamic c = a + b;

  Console.WriteLine(c);      
}

b in real C#
----
private static void Main(string[] args)
{
  object a = 13;
  object b = 14;
  if (Program.<Main>o__SiteContainer0.<>p__Site1 == null)
  {
    Program.<Main>o__SiteContainer0.<>p__Site1 = 
      CallSite<Func<CallSite, object, object, object>>.
      Create(Binder.BinaryOperation(CSharpBinderFlags.None, 
                      ExpressionType.Add, 
                      typeof(Program), 
                      new CSharpArgumentInfo[]
    {
      CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
      CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null)
    }));
  }
  object c = Program.<Main>o__SiteContainer0.
    <>p__Site1.Target(Program.<Main>o__SiteContainer0.<>p__Site1, a, b);
  if (Program.<Main>o__SiteContainer0.<>p__Site2 == null)
  {
    Program.<Main>o__SiteContainer0.<>p__Site2 = 
      CallSite<Action<CallSite, Type, object>>.
      Create(Binder.InvokeMember(CSharpBinderFlags.ResultDiscarded, 
                     "WriteLine", 
                     null, 
                     typeof(Program), 
                     new CSharpArgumentInfo[]
    {
      CSharpArgumentInfo.Create(
        CSharpArgumentInfoFlags.UseCompileTimeType |  
        CSharpArgumentInfoFlags.IsStaticType, 
        null),
      CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null)
    }));
  }
  Program.<Main>o__SiteContainer0.<>p__Site2.Target(
    Program.<Main>o__SiteContainer0.<>p__Site2, typeof(Console), c);
}