7. Inventory Class Design an Inventory class that can hold information for an item in a retail store's inventory. The class should have the following private member variables. Variable Name Description itemNumber An int that holds the item's number. quantity An int that holds the quantity of the item on hand. cost A double that holds the wholesale per-unit cost of the item The class should have the following public member functions. Member Function default constructor constructor #2 Description Sets all the member variables to 0. Accepts an item's number, quantity, and cost as arguments. Calls other class functions to copy these values into the appropriate ber variables. Then calls the set Total Cost function.

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