Inventory using linked list

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An inventory has to be maintained for keeping a check of current stock. Each product has a unique number consisting of six digits, say abcdef. The first two digits ab defines the main category, the next two digits cd defines the sub-category, and the last two digits ef defines the sub-sub-category. The team decided to maintain the information about number of items in stock (say inStock > 0) at all

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solution.cppC++17

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