C# 逻辑运算符

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/// <summary>  /// 2011-05-30 Geovin Du 逻辑运算符  /// 涂聚文 缔友计算机信息技术有限公司  /// </summary>  /// <param name="sender"></param>  /// <param name="e"></param>  protected void Page_Load(object sender, EventArgs e)  {      //1 &      byte oddMask = 1;      byte someByte = 85;      bool isEven;      isEven = (oddMask & someByte) == 0;      Response.Write("位与运算符："+isEven.ToString()+"<br/>");//isEven is false      //2 |      byte option1 = 1;      byte option2 = 2;      byte totalOptions;      totalOptions = (byte)(option1 | option2);      Response.Write("位或运算符：" + totalOptions.ToString() + "<br/>");      //3 ^      byte invertMask = 255;      byte someinvertByte = 240;      byte inverse;      inverse = (byte)(someinvertByte ^ invertMask);      Response.Write("位异或运算符：" + inverse.ToString() + "<br/>");      Response.Write(((int)inverse).ToString() + "<br/>");      //4 &      bool inStock = false;      decimal price = 18.95m;      bool buy;      buy = inStock & (price < 20.00m);      Response.Write("布尔与运算符：" + buy.ToString() + "<br/>");      //5 |      int mileage = 2305;      int months = 4;      bool changOil;      changOil = mileage > 3000 | months > 3;      Response.Write("布尔或运算符：" + changOil.ToString() + "<br/>");      //6 ^      bool availFlag = false;      bool toggle = true;      bool available;      available = availFlag ^ toggle;      Response.Write("布尔异或运算符：" + available.ToString() + "<br/>");      //7. &&      bool insStocks = false;      decimal prices = 18.95m;      bool buys;      buys = insStocks && (prices < 20.00m);      Response.Write("条件与运算符：" + buys.ToString() + "<br/>");      //8. ||      int meleage = 4305;      int monthts = 4;      bool changeoils;      changeoils = meleage > 3000 || monthts > 3;      Response.Write("条件或运算符：" + changeoils.ToString() + "<br/>");      //9 副作用      decimal totalSpending=3692.48m;                 bool onBudget=totalSpending>4000.00m && totalSpending<CalsAvg();//方法      Response.Write("副作用：" + onBudget.ToString() + "<br/>");      //10 is      int i = 0;      bool isTest = i is int;      Response.Write("is 运算符：" + isTest.ToString() + "<br/>");      //11 as      //12 sizeof      //13 typeof      //14 checked      //15 unchecked      //三元运算符      long democratVotes = 178888;      long republicanVotes = 173343;      string headline = democratVotes != republicanVotes ? "We Finally Have a Winner!" : recount();      Response.Write("三元运算符：" + headline + "<br/>");    }  decimal avgSpending;  private decimal CalsAvg()  {      return avgSpending=4002.00m;  }  /// <summary>  ///  /// </summary>  /// <returns></returns>  private string recount()  {      return "hello";  }