3.13 (Invoice Class) Create a class called Invoice that a hardware store might u

Question

3.13 (Invoice Class) Create a class called Invoice that a hardware store might use to represent an invoice
for an item sold at the store. An Invoice should include four data members—a part number (type string), a
part description (type string), a quantity of the item being purchased (type int) and a price per item (type int).
[Note: In subsequent chapters, we’ll use numbers that contain decimal points (e.g., 2.75)—called floatingpoint
values—to represent dollar amounts.] Your class should have a constructor that initializes the four data
members. Provide a set and a get function for each data member. In ddition, provide a member function
named getInvoiceAmount that calculates the invoice amount (i.e., multiplies the quantity by the price per item),
then returns the amount as an int value. If the quantity is not positive, it should be set to 0. If the price per item
is not positive, it should be set to 0. Write a test program that demonstrates class Invoice’s capabilities.

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3.14 (Employee Class) Create a class called Employee that includes three pieces of information as data
members—a first name (type string), a last name (type string) and a monthly salary (type int). [Note: In
subsequent chapters, we’ll use numbers that contain decimal points (e.g., 2.75)— called floating-point
values—to represent dollar amounts.] Your class should have a constructor that initializes the three data
members. Provide a set and a get function for each data member. If the monthly salary is not positive, set it
to 0. Write a test program that demonstrates class Employee’s capabilities. Create two Employee objects and
display each object’s yearly salary. Then give each Employee a 10 percent raise and display each Employee’s
yearly salary again.

Explanation / Answer

#include #include using namespace std; class Invoice { public: void setPartNumber (string number) { product = number; } string getPartNumber() { return product; } void setPartDescription (string desc) { description = desc; } string getPartDescription() { return description; } void setQuantityPurchased (int amount) { quantity = amount; } int getQuantityPurchased() { return quantity; } void setPriceItem (float price) { prices = price; } float getPriceItem() { return prices; } void getInvoiceAmount() { float total = quantity * prices; cout

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