1 virtual supermarket shopping, goods class contains the attribute name, the number of products available, and the pure virtual function: output function, increase the function of goods, selling function, search function by name and so on. 2, derived from the commodity daily necessities, food, home appliances category. Among them, food products and daily necessities has a shelf life of property classes, home appliance products with the color attribute. Shown by the output function to the specific names of all kinds of goods, basic properties and the existing number.

market.cpp

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