private static void Main(string[] args) { Rectangle r = new Rectangle(); r.length = 4.5; r.width = 3.5; r.Display(); ExecuteRectangle execute = new ExecuteRectangle(); execute.addNum(4, 5); execute.chageNumType(); object obj; obj = 100; Console.WriteLine(obj); Console.WriteLine(obj.GetType()); dynamic c = 12.6f; Console.WriteLine(c); string str = @"<script type=""text/javascript""> <!-- --> </script>"; Console.WriteLine(str); //execute.tryInput(); SampleClass sample = new SampleClass(11, 22); Console.WriteLine("x={0}, y={1}", sample.x, sample.y); Console.WriteLine("c1={0}, c2={1}", SampleClass.c1, SampleClass.c2); myClass mc = new myClass(); mc.aFunc(); mc.afunc1(); mc.afun2(); Console.ReadLine(); Console.WriteLine("=================="); myClass myClass = new myClass(); myClass.afunc1(); }