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(Modified Account Class) Modify class Account (Fig. 3.8) to provide a member function called withdraw that withdraws money from an Account. Ensure that the withdrawal amount does not exceed the Account's balance. If it does, the balance should be left unchanged and the member function should display a message indicating "Withdrawal amount exceeded account balance." Modify class AccountTest (Fig. 3.9) to test member function withdraw.
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- (Richer Shape Hierarchy) The world of shapes is much richer than the shapes included inthe inheritance hierarchy of Fig. 19.3. Write down all the shapes you can think of—both two-dimensional and three-dimensional—and form them into a more complete Shape hierarchy with asmany levels as possible. Your hierarchy should have the base class Shape from which class TwoDimensionalShape and class ThreeDimensionalShape are derived. [Note: You do not need to write any codefor this exercise.] We’ll use this hierarchy in the exercises of Chapter 20 to process a set of distinctshapes as objects of base-class Shape. (This technique, called polymorphism, is the subject ofChapter 20.)arrow_forward1 - Nuclear Power Plant (python) The nuclear powerplant at Threeyedfish will automatically run a program to print a warning message when the reactor core becomes unstable. The warning message reads: NUCLEAR CORE UNSTABLE!!! Quarantine is in effect. Surrounding hamlets will be evacuated. Anti-radiationsuits and iodine pills are mandatory. Since the message contains crucial information, it should be printed three times. To do this, write a function that prints this message. This function has to be used three times.arrow_forward(The Person, Student, Employee, Faculty, and Staff classes) Design a class named Person and its two subclasses named Student and Employee. Make Faculty and Staff subclasses of Employee. A person has a name, address, phone number, and e-mail address. A student has a class status (freshman, sophomore, junior, or senior). Define the status as a constant. An employee has an office, salary, and date hired. Use the MyDate class defined in Programming Exercise 10.14 – see the textbook - to create an object for date hired. A faculty member has office hours and a rank. A staff member has a title. Override the toString method in each class to display the class name and the person's name. Draw the UML diagram for the classes and implement them. Write a test program that creates a Person, Student, Employee, Faculty, and Staff, and invokes their toString() methods.arrow_forward
- (Time Class Modification) It would be perfectly reasonable for the Time class of Figs. 17.4–17.5 to represent the time internally as the number of seconds since midnight rather than the threeinteger values hour, minute and second. Clients could use the same public methods and get thesame results. Modify the Time class of Fig. 17.4 to implement the time as the number of secondssince midnight and show that there is no visible change in functionality to the clients of the class.[Note: This exercise nicely demonstrates the virtues of implementation hiding.]arrow_forward(Enhanced Employee Class) Modify class Employee inFigs. 12.9–12.10 by adding a private utility function calledisValidSocialSecurityNumber . This member function shouldvalidate the format of a social security number (e.g., ###-##-#### , where # is a digit). If the format is valid, return true ;otherwise return false .arrow_forward(Dynamic Binding vs. Static Binding) Distinguish between static binding and dynamicbinding. Explain the use of virtual functions and the vtable in dynamic bindingarrow_forward
- Q2) Write C++ code to create class called number. The private data members for this class are nobl (double), nob2 (double) and nob3(double). The member function for this class is: 1- (Constructor) that accepts nobl, nob2 and nob3 as arguments (inside the class). Write a main() that create two objects (h1) with initially data members (nob1 :13000, nob2:15 and nob3 :19) , (kl) with initially data members (nob1:16000, nob2:77 and nob3:2018) and (TI) with initially data members (nob1:15000, nob2:37 and nob3:2020). Finally print the information of the object that has smallest nob2 for these three objects using void display friend function:arrow_forward(Payroll System Modification) Modify the payroll system of Figs. 20.9–20.17 to includeadditional Employee subclasses PieceWorker and HourlyWorker. A PieceWorker represents an employee whose pay is based on the number of pieces of merchandise produced. An HourlyWorker represents an employee whose pay is based on an hourly wage and the number of hours worked. Hourlyworkers receive overtime pay (1.5 times the hourly wage) for all hours worked in excess of 40 hours.Class PieceWorker should contain private instance variables wage (to store the employee’swage per piece) and pieces (to store the number of pieces produced). Class HourlyWorker shouldcontain private instance variables wage (to store the employee’s wage per hour) and hours (to storethe hours worked). In class PieceWorker, provide a concrete implementation of method earningsthat calculates the employee’s earnings by multiplying the number of pieces produced by the wageper piece. In class HourlyWorker, provide a concrete…arrow_forwardQ2) Write C++ code to create class called number. The private data members for this class are nobl (double), nob2 (double) and nob3(double). The member function for this class is: 1- (Constructor) that accepts nob1, nob2 and nob3 as arguments (inside the class). Write a main() that create two objects (hl) with initially data members (nobl :13000, nob2:15 and nob3 :19), (kl) with initially data members (nobl:16000, nob2:77 and nob3:2018) and (TI) with initially data members (nobl:15000, nob2:37 and nob3:2020). Finally print the information of the object that has smallest nob2 for these three objects using void display friend function:arrow_forward
- (java) The Painting Subclass Write class as follows: The class is named Painting, and it inherits from the Art class. It has a private String member variable named medium It has a default constructor that assigns the values "No name" to name, "No artist" to artist, -1 to year, and "No medium" to the medium variable. This default constructor calls the four-argument constructor. It has a four-argument constructor to assign values to the name, artist, year, and medium variables. It has a getter and settersfor the medium variable. It has a toString() method This class contains no other methods Make sure to include your name, the name of this class, our course number, and the Activity number in a Javadoc comment at the top. Make sure to write a Javadoc comment for each of these methods.arrow_forwardQ1: A- Choose the correct answer. 1. A function's single most important role is to: a. reduce program size. c. accept arguments and return value. 2. In a class definition, private data or functions are accessible: a. to any function in the program. c. to member functions of that class. 3. A member function can always access the data: a. in the object of which it is a member. c. in any object of the class of which it is a member. 15 marks| b. give a name to a block of code. d. organize a program into conceptual units. b. only if you know the password. d. only to public members of the class. b. in the class of which it is a member. d. in the public part of its class.arrow_forwardPythonarrow_forward
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