做代码都对着但是老有这个报错
error CS2001: Source file `' could not be found
error CS2001: Source file `' could not be found
 
                            2017-07-26
using System;
using System.Collections.Generic;
using System.Text;
namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            string today;//今天的午饭
            string tomorrow;//明天的午饭
            today = "鱼香肉丝";
            tomorrow = "小鸡炖蘑菇";
            //请在这里补充代码,实现变量today和tomorrow的交换
            string temp;
            temp=today;
            today=tomorrow;
            tomorrow=temp;
            //打印
            Console.WriteLine("我今天吃{0},明天吃{1}。",today,tomorrow);
        }
    }
}
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