2.Create a class in c++ called rectangle which has following mebers- Private-int height,int width Public-Rectangle(h,w),int area() Now create a derive class class called Triangle which will inherit Rectangle class privately.Triangle class has following members- Private:int area Public: Triangle(Height,width),displayArea() Now create one object of triangle class and set the height and width,calculate area and display it.Use an object pointer to call displayArea().

2.Create a class in c++ called rectangle which has following mebers- Private-int height,int width Public-Rectangle(h,w),int area() Now create a derive class class called Triangle which will inherit Rectangle class privately.Triangle class has following members- Private:int area Public: Triangle(Height,width),displayArea() Now create one object of triangle class and set the height and width,calculate area and display it.Use an object pointer to call displayArea().

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Create a C++ class and name it Vehicle. The class Vehicle has two constant private members: license and year. Write a constructor with two arguments. Make the Vehicle class an abstract class. Create another C++ class and call it Car. The Car class inherits form Vehicle class and has another private member (brand). Write a constructor with three arguments. Write a method that returns the following: My car is BMW (2020) with a license of ABC123. Write a C++ program. Create an instance of the Car class and display its members value and call its method. You are not allowed to use materials that are not covered in our lectures.
Implement the following hierarchy using C++ classes. 1. Shape: This should be an interface class that supports area() and display() functions. 2. Circle and Rectangle: Implement the area and display functions of Shape. 3. Quadrilateral: This class should be an abstract class. It may contain member variables for length and height. 4. Trapezoid: Should inherit length, height from Quadrilateral, and add 'side', represents the side parallel to 'length'. 5. Create appropriate .h/.cpp files with constructors and destructors (wherever needed). which 6-
Implement a JAVA application that keeps track of package deliveries to consumers. Theapplication consists of the following classes:• Item: Create a class called Item. The class has two member variables oftype String named name and description and provides getter and settermethods for both.• Mail (abstract class): Implement an abstract class called Mail . The class hasa member variable of type String named address and a getter method for it.• Letter: Implement a class called Letter that inherits from Mail . The classhas one member variable of type String named contents.• Package: Implement a class called Package that inherits from Mail . Theclass has one member variable of type Item[] named items and a gettermethod for it.• DeliveryTruck: Implement a class called DeliveryTruck with a singlemember variable of type Mail[] of length 10. Add the following method:o void load(Mail mail): This method stores the given mail argumentat the next available spot in the member variable.
Using c++ Design a Wacky class that can be used to generate a message based on the information passed to it. The class should have a single integer private member variable: int num; Design the complete class so that if: an object is created with no parameters; num is initialized to 10. an object is created with 1 parameter that is an integer; num is initialized to the integer that is passed *2 an object is created with 1 parameter that is a double; num is initialized to the double *4 an object is created with 2 parameters, a char and a string; it prints the message "That's WACKY!"
1. Design a new Triangle class that extends the abstract GeometricObject class. Draw the UML diagram for the classes Triangle and GeometricObject then implement the Triangle class. Write a test program that prompts the user to enter three sides of the triangle, a color, and a Boolean value to indicate whether the triangle is filled. The program should create a Triangle object with these sides, and set the color and filled properties using the input. The program should display the area, perimeter, color, and true or false to indicate whether it is filled or not.using java programming
Create a class BeautyProduct with name, color, brand. Provide Constructors, getters, setters and also write toString method. Now create a class Lipstick which extends the class BeautyProduct as Lipstick is-a Beauty Product it has totalVolume, remainingVolume, price, texture (gloss, matt) as private data members. Provide Constructors, getters, setters and an apply() method whenever this method is called a beauty item is applied and its volume decreases by 10.This should also check that volume must not be zero if it then u have to throw exception. Also write toString method which prints all details like name, color, brand, price, texture and volume. Create another class foundation having totalVolume, remainingVolume, price, texture (liquid, cake) and lastingTime (number of hours foundation remain intact on face and does not crease) as private data members. This also extends the base class i.e. BeautyProduct. Provide Constructors, getters, setters and an apply() method whenever this…
In c++Create a lecturer class with member-data name (name) and department (department). For the Lecturer class, write constructors, get & set methods, and the toString () method, which returns the textual description of the object. Write a Lecture class with data member:- subject (discipline)- weekday (day of the week when it takes place)- hour (start time, integer)- online (boolean value, whether remote or not)- lecturer (object of class Lecturer)For the Lecture class, write:- constructors- get & set methods- method isItMorning (), returning a Boolean value, the result of checking whether the lecture starts at 7-11- give a new implementation of the toString () method so that it returns the text description of the Lecture objectIn the test function main ()1. Create objects of both classes and illustrate the use of all possible methods for them.2. Create an array of Lecture objects and display it on the screen and in a file.
Write a c++ program make a class LocalPhone that contains an attribute phone to store a local telephone number. The class contains member functions to input and display phone number. Write a child class NatPhone for national phone numbers that inherits LocPhone class. It additionally contains an attribute to store city code. It also contains member functions to input and show the city code. Write another class IntPhone for international phone numbers that inherit NatPhone class. It additionally contains an attribute to store country code. It also contains member functions to input and show the country code. Test these classes from main() by creating objects of derived classes and testing functions in a way that clear concept of multi-level Inheritance.
IN C++ Create a parent class for Student class. Parent class should be named HUMAN. Add at least 2 attributes to HUMAN class. Test your code by creating an instance of Student filling all attributes (including attributes in parent class). Print all the information using the proper function (as in previous activities). A screenshot showing the code in Visual Studio and the output (on the console screen).
Implement a nested class composition relationship between any two class types from the following list: Advisor Вook Classroom Department Friend Grade School Student Teacher Tutor Write all necessary code for both classes to demonstrate a nested composition relationship including the following: a. one encapsulated data member for each class b. inline default constructor using constructor delegation for each class c. inline one-parameter constructor for each class d. inline accessors for all data members e. inline mutators for all data members
2. Implement the class below such that it should provide structure with necessary Data Members to all the sub-classes of itself. The object creation of this class is not mandatory. Book -name:String -author:Author -price:double -qty:int = 0
Polymorphism in Java is Select one: a.when a program uses several different types of objects, each with its own variable. b.when a single variable is used with several different types of related objects in a program. c.when a single parent class has many child classes The following code fragment is polymorphic: for(Shape shape : shapes) if(shape instanceof Circle) { Circle c = (Circle) shape; // cast to a circle c.draw(g); // call the circle's draw method } else if(shape instanceof Rect) { Rect r = (Rect) shape; r.draw(g); } True or False The following code fragment is polymorphic: for(Shape shape : shapes) shape.draw(g) True or False