单词加引号&字符串倒输

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

namespace ch05t07
{
    class Program
    {
        static void Main(string[] args)
        {
            String str = "i am a girl";
            String[] word = str.Split(‘ ‘);
            foreach (string w in word)
            {
                Console.Write("\"{0}\" ",w);   
            }
            Console.ReadKey();
        }
    }
}

static void Main(string[] args)
        {
            String sorb;
            int i;
            Console.WriteLine("please input a string");
            sorb=Console.ReadLine();
            for (i = sorb.Length; i > 0; i--)
            {
                Console.Write(sorb[i-1]);
            }
            Console.ReadKey();
        }