Computers and Technology, 17.10.2021 14:00, Duckkkkkkkk

Write a function named “createPurchaseOrder” that accepts the quantity (integer), the cost per item(double), and the description(string). It will return a newly created PurchaseOrderobject holding that information if they are valid: quantity and cost per item cannot be negative and the description can not be empty or blank(s). When it is invalid, it will return NULL to indicate that it cannot create such PurchaseOrderobject.

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Write a function named “createPurchaseOrder” that accepts the quantity (integer), the cost per item(...