Concept explainers
Cash Register
Design a CashRegister class that can be used with the InventoryItem class discussed in this chapter. The CashRegister class should perform the following:
1. Ask the user for the item and quantity being purchased.
2. Get the item’s cost from the InventoryItem object.
3. Add a 30 percent profit to the cost to get the item’s unit price.
4. Multiply the unit price times the quantity being purchased to get the purchase sub-total.
5. Compute a 6 percent sales tax on the subtotal to get the purchase total.
6. Display the purchase subtotal, tax, and total on the screen.
7. Subtract the quantity being purchased from the onHand variable of the InventoryItem class object.
Implement both classes in a complete program. Feel free to modify the InventoryItem class in any way necessary.
Input Validation: Do not accept a negative value for the quantity of items being purchased.
Want to see the full answer?
Check out a sample textbook solutionChapter 13 Solutions
Starting Out With C++ From Control Structures Through Objects, Student Value Edition (8th Edition)
Additional Engineering Textbook Solutions
Starting Out with C++: Early Objects
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Database Concepts (7th Edition)
Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
Starting out with Visual C# (4th Edition)
Starting Out with Programming Logic and Design (4th Edition)
- Problem: Employee and ProductionWorker Classes Write a python class named ProductionWorker that is a subclass of the Employee class. The ProductionWorker class should keep data attributes for the following information: • Shift number (an integer, such as 1, 2, or 3)• Hourly pay rateThe workday is divided into two shifts: day and night. The shift attribute will hold an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2. Write the appropriate accessor and mutator methods for this class. Once you have written the class, write a program that creates an object of the ProductionWorker class, and prompts the user to enter data for each of the object’s data attributes. Store the data in the object, then use the object’s accessor methods to retrieve it and display it on the screen Note: The program should be written in python. Sample Input/Output: Enter the name: Ahmed Al-AliEnter the ID number: 12345Enter the department:…arrow_forward7)Circle Class Write a Circle class that has the following fields: radius: a double PI:a final double initialized with the value 3.14159 The class should have the following methods: Constructor. Accepts the radius of the circles as an argument. Constructor. A no-arg constructor that sets the radius field to 0.0. setRadius. A mutator method for the radius field. getRadius.An accessor method for the radius field. area. Returns the area of the circle, which is calculated as area. Returns the area of the circles, which is calculated as area= PI * radius * radius diameter. Returns the diameter of the cirlce, which is calculated as diameter = radius * 2 circumference. Returns the circumference of the circle, which is calculated as circumference = 2 * PI * radius Write a program that demonstrates the Circle class by asking the user for the circles's radius, creating a Circle object, and then reporting the cirlce's area, diameter, and circumference.arrow_forwardA class may only have one default _________ and one _________.arrow_forward
- Employee and ProductionWorker ClassesCreate an Employee class that has properties for the following data:Employee nameEmployee numberNext, create a class named ProductionWorker that is derived from the Employee class. The ProductionWorker class should have properties to hold the following data:Shift number (an integer, such as 1, 2, or 3)Hourly pay rateThe workday is divided into two shifts: day and night. The Shift property will hold an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2.Create an application that creates an object of the ProductionWorker class and lets the user enter data for each of the object’s properties. Retrieve the object’s properties and display their values. this.ReportViewer1.Employee(); cannot reference?arrow_forwardCreate a class called ship that incorporates a ship’s serial number and location. Create another class angle which has two variables latitude and longitude. A member function of the ship class should get a position from the user and store it. Create object that should report the serial number and position. Write a main () program that creates three ships, asks the user to input the position of each, and then displays each ship’s serial number and position.Identify all the classes implement inheritance between them. (language cpp)arrow_forwardPeso Converter Create a PesoCurrency Class with an amount attribute. Define an overloaded convertTo method that will convert the amount attribute to Dollars or Euros. Assume that 1 dollar is equivalent to 50 pesos while 10 dollars is equivalent to 2 Euros. Implement the class in a computer program that will ask the user an amount in Peso to convert. The program should be able to display the Dollar and Euro equivalent of the input Peso amount. For this exercise, you are required to apply all OOP concepts that you learned in class.arrow_forward
- Circle ClassWrite a Circle class that has the following fields:• radius: a double• PI: a final double initialized with the value 3.14159The class should have the following methods:• Constructor. Accepts the radius of the circle as an argument.• Constructor. A no-arg constructor that sets the radius field to 0.0.• setRadius. A mutator method for the radius field.• getRadius. An accessor method for the radius field.• area. Returns the area of the circle, which is calculated asarea = PI * radius * radius• diameter. Returns the diameter of the circle, which is calculated asdiameter = radius * 2• circumference. Returns the circumference of the circle, which is calculated ascircumference = 2 * PI * radiusWrite a program that demonstrates the Circle class by asking the user for the circle’s radius, creating a Circle object, and then reporting the circle’s area, diameter, and circumference.arrow_forward2. Car Class Write a class named car that has the following fields: ▪ yearModel. The year Model field is an int that holds the car's year model. ▪ make. The make field is a String object that holds the make of the car, such as "Ford", "Chevrolet", "Honda", etc. ▪ speed. The speed field is an int that holds the car's current speed. In addition, the class should have the following methods. ■ Constructor. The constructor should accept the car's year model and make as arguments. These values should be assigned to the object's year Model and make fields. The constructor should also assign 0 to the speed field.arrow_forwardTrue or FalseA base class reference variable can reference an object of any class that is derived from the base class.arrow_forward
- Circle Class (Easy) Write a Circle class that has the following member variables: radius : a double The class should have the following member functions: Default Constructor: default constructor that sets radius to 0.0. Constructor: accepts the radius of the circle as an argument. setRadius: an mutator function for the radius variable. getRadius: an accessor function for the radius variable. getArea: returns the area of the circle, which is calculated as area = pi * radius * radius getCircumference: returns the circumference of the circle, which is calculated as circumference = 2 * pi * radius Step1: Create a declaration of the class. Step2: Write a program that demonstrates the Circle class by asking the user for the circle’s radius, creating Circle objects, and then reporting the circle’s area, and circumference. You should create at least two circle objects, one sets the radius to 0.0 and one accepts the radius as an…arrow_forwardemployee and production worker classes write an employee class that keeps data attributes for the following pieces of information: • employee name • employee number next, write a class named productionworker that is a subclass of the employee class. the productionworker class should keep data attributes for the following information: • shift number (an integer, such as 1, 2, or 3) • hourly pay rate the workday is divided into two shifts: day and night. the shift attribute will hold an integer value representing the shift that the employee works. the day shift is shift 1 and the night shift is shift 2. write the appropriate accessor and mutator methods for each class. once you have written the classes, write a program that creates an object of the productionworker class and prompts the user to enter data for each of the object’s data attributes. store the data in the object, then use the object’s accessor methods to retrieve it and display it on the screen. satak overfallowarrow_forwardTrue or False The get accessor can be thought of as a method that returns the class property’s value.arrow_forward
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT