Question: Using c++ language. a) Consider the class, derived class, and the virtual functions as shown in Display for Q3. Create a derived class (of Sale)
a) Consider the class, derived class, and the virtual functions as shown in Display for Q3. Create a derived class (of Sale) called "MailorderSale' having one private member variable called 'shipping charge'. It should have constructor function and virtual function bill' (this function adds shipping charge to the price). Define all these functions (no need of default constructors) b) In the main function, define one object of DiscountSale with (11, 10) initial values and define another object of MailorderSale with (8, 2) initial values. Then write statements to compare their bills using overload operator 'K' and print appropriate messages
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