C++ 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 PurchaseOrder object holding that information if they are valid: quantity and cost per item cannot be negative and the description cannot be empty or blank(s). When it is invalid, it will return NULL to indicate that it cannot create such PurchaseOrder object.
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Q: Write a function named “createPurchaseOrder” that accepts the quantity (integer), the cost per item…
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C++
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 PurchaseOrder object holding that information if they are valid:
quantity and cost per item cannot be negative and the description cannot be empty or blank(s). When it is invalid, it will return NULL to indicate that it cannot create such PurchaseOrder object.
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- C++ Write a function named “createPayStub” that accepts the number of hours(integer), and the hourly payrate (double). It will return the pointer to a newlycreated PayStub object. If the given hours or payrate is negative, it will returnnullptr. In addition, it also returns the total payout amount to the caller (in theoutput parameter).Please show how this function is called and returning the proper information.C++ Write a function named “createPurchaseOrder” that accepts the quantity(integer), the cost per item (double), and the description (string). It will return anewly created PurchaseOrder object holding that information if they are valid:quantity and cost per item cannot be negative and the description cannot be empty or blank(s). When it is invalid, it will return NULL to indicate that it cannot create such PurchaseOrder object. PurchaseOrder createPurchaseOrder(int quantity, double costPerItem, string description) { if(quantity < 0 || costPerItem < 0.0 || description == "") return NULL; else { PurchaseOrder p = new PurchaseOrder(quantity,costPerItem,description); return p; } } what's the issue with this function and how to rewrite itC++ Create a class Rectangle. The class has attributes length and width, each of which defaults to 1. It has member functions that calculate the perimeter and the area of the rectangle. It has setter and getter functions for both length and width. The program should ASK THE USER TO INPUT length and width value. The set functions should verify that length and width are each floating-point numbers larger than 0.0 and less than 20.0. A sample output of your program should look like follows: length = 1.0; width = 1.0; perimeter = 4.0; area = 1.0 another example: length = 5.0; width = 4.0; perimeter = 18.0; area = 20.0 There should be three files and ONE class only. .h file contains class definition, .cpp file contains the implementation of the class in .h file and main.cpp should contain the driver code.
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