Knowledge-委托实例

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
class Program
{

    //5．    通过“委托”方式实现求一个整数的平方与平方根。
    public delegate void Get(int x);
    class SqureandRoot
    {

        public void Square(int x)
        {
            Console.WriteLine("{0}", x * x);
         
        }
        public void SquareRoot(int x)
        {
            Console.WriteLine("{0}", Math.Sqrt(x));

        }



    }

    static void Main(string[] args)
    {
        SqureandRoot sr = new SqureandRoot();
        Get get= new Get(sr.Square);
        Get get1 = new Get(sr.SquareRoot);
        Get get2 = get + get1;
        get2(4);
        Console.ReadKey();








    }
}

}