hi

task 4 please ... thank you

task 4

Define a class with name Device derived from abstract class Article. This class shall have following members:

a private integer attribute with name main_memory storing the size of the main memory.

a private attribute with name os for the operating system of the device.

a public constructor with four parameters for the article name, the net price, the main memory size and the operating system with default parameter unknown; the tax rate shall be automatically initialised by the default parameter of class constructor Article.

a virtual public destructor producing an output "~Device()" at its call (see examples at the bottom).

a public method with name get_os without parameter returning the operating system.

a virtual public method with name print without parameter or return value outputting the article name, followed by "RAM", the main memory size, "GB" as well as the operating system (see examples at the bottom).

task 5

- - + 90 % Debug Artide:: Plugins DoxyBlocks Settings Help #include #include #includecostream> Artides RECOWN using namespace std; task 1 class Article private: string model: double netPrice: double taxRate: double b: public: Article (stringa, double b, double - model .assign(a): netPrice: textRate : virtual -Article) cout