C#物件導向編程練習，

C#物件導向編程練習，

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication1{    class Program    {        public class apple        {            public string info;            public apple()            {            }               public string app(string[] a)            {                foreach (string value in a)                    info += value + "+";                info=info.Substring(0,info.Length-1);                return info;            }        }        static void Main(string[] args)        {            string[]b = new string[]{"Hello","GeoStrom","Haha"};            apple A = new apple();            Console.WriteLine(A.app(b));            Console.WriteLine();        }    }}