简单小闹钟

static void Main(string[] args)
        {
            DateTime dt = DateTime.Now;                   //获取电脑当前时间
            DateTime nz = Convert.ToDateTime("2015-4-13 17:00");
            while (true)
            {
                dt = dt.AddMinutes(1);      //每一分钟一分钟的加上
                if (nz.ToShortTimeString().Equals(dt.ToShortTimeString()))    //当电脑时间等于闹钟时间
                {
                    Console.WriteLine(dt + "叮铃铃，叮铃铃，叮铃铃");
                    Console.Write("是否关闭闹钟?Y/N");
                    string b = Console.ReadLine();
                    if (b == "Y")
                    {
                        Console.WriteLine("已起床");
                        break;
                    }
                    else
                    {
                        nz = dt.AddMinutes(5);   // 否的话每隔5分钟响一次
                    }
                }
            }
        }