Type into the member function Main a few lines of code to create an instance of Quad and then assert that when the object Area method is given a length of 3 and width of 2, it returns the value 6.
在主函数中输入下列几行代码，创建Quad实例，并通过Assert断言，当长宽各为3和2时，返回的结果应该是6。
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公司主营矩阵、分配器、延长器、画面分割器、转换器、高清CVI，AHD，TVI解码器以及多种高清系列产品。自主研发/生产，支持OEM，ODM！
The tower is over Tom Gate, and on the main entrance of Christ Church, which leads into Tom Quad.
这座塔穿过了汤姆门，位于基督教堂学院的正门处，直通汤姆方庭。
The tower is over Tom Gate, and on the main entrance of Christ Church, which leads into Tom Quad.
这座塔穿过了汤姆门，位于基督教堂学院的正门处，直通汤姆方庭。
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