CTelevision

  定义一个描述电视的CTelevision类。类中包含电视品牌(p_brand，使 用指针类型)、当前频道(channel，一共500个频道)和当前音量(volume， 最大30)等数据成员。要求提供缺省以及带参构造函数，以及输出对象信息 方法。(A class definition television CTelevision description. Class contains TV brands (p_brand, so Pointer type), the current channel (channel, a total of 500 channels) and the current volume (volume, Maximum 30) and other data members. Requirements and provides a default constructor with parameters, and output object information Methods.)