using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace _12委托练习

{

    public delegate string DelProStr(string str);

    class Program

    {

        static void Main(string[] args)

        {

            string[] names = { "abcdDE", "DEdfsEFDd", "ASFdf" };

            //三个需求：

            //将所有元素转换成大写

            //将所有元素转换成小写

            //将所有元素两边加上一个双引号

            ProString(names, (name) => { return name.ToUpper(); });//转大写

            ProString(names, (name) => { return name.ToLower(); });//转小写

            ProString(names, (name) => { return "\"" + name + "\""; });//双引号

            foreach (string item in names)

            {

                Console.WriteLine(item);

            }

            Console.ReadKey();

        }

        static void ProString(string[] names, DelProStr del)

        {

            for (int i = ; i < names.Length; i++)

            {

                names[i] = del(names[i]);//传入一个处理字符串的方式

            }

        }

    }

}