么么哒 萌萌哒

using System;  interface Runner {     void run();}  interface Swimmer {     void swim();}  abstract class Animal  {       abstract public void eat();}    class Person

using System; delegate double Fun( double x );   public class DelegateIntegral{    public static void Main()    {        Fun fun = new Fun(Math.Sin);        double d = Integral( 

using System;  public delegate void DownloadStartHandler(object sender, DownloadStartEventArgs e);  //声明委托public delegate void DownloadEndHandler(object sender, DownloadEndEventArgs e);  publi

public struct Complex {    public double real;    public double imaginary;      public Complex(double real, double imaginary)     {        this.real = real;        this.imaginary = ima

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;  usin

using System;public class DataHouse{    public static void FindData( long ID)     {        if( ID>0 && ID            Console.WriteLine( ID );        else            throw new DataHouse