Consider the following inheritance in C++: Shape Shape2D Circle Square Rectangle What is true in the above inheritance? Shape3D Cube Sphere a) only ii b) only ii and iii c) only i and ii d) only iii i) Shape and Shape3D have has-a relationship, as Shape class contains Shape3D class ii) It is an example of multi-level inheritance, but not multiple inheritance iii) Statements Square sqObj; Shape* shObj=&sqObj; causes errors

Consider the following inheritance in C++: Shape Shape2D Circle Square Rectangle What is true in the above inheritance? Shape3D Cube Sphere a) only ii b) only ii and iii c) only i and ii d) only iii i) Shape and Shape3D have has-a relationship, as Shape class contains Shape3D class ii) It is an example of multi-level inheritance, but not multiple inheritance iii) Statements Square sqObj; Shape* shObj=&sqObj; causes errors

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

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NEED HELP IN JAVA "INHERITANCE" MUST BE IMPLEMENTED"INHERITANCE" Instructions1. Create a java program that will simulate a simple calculator which utilizes inheritance. Thecalculator must include the four mathematical operations (Addition, Subtraction,Multiplication, Division) and will be an individual class. a) Ask the user to enter 1 st number and 2 nd number.b) It is also the users option on what mathematical operation to be used.c) Display the result in whole, for example 2 + 3 = 5.
PART ONE In C# create a Contestant class with the following characteristics: The Contestant class contains public static arrays that hold talent codes and descriptions. Recall that the talent categories are Singing, Dancing, Musical instrument, and Other. Name these fields talentCodes and talentStrings respectively. The class contains an auto-implemented property Name that holds a contestant’s name. The class contains fields for a talent code (talentCode) and description (talent). The set accessor for the code assigns a code only if it is valid. Otherwise, it assigns I for Invalid. The talent description is a read-only property that is assigned a value when the code is set. Modify the GreenvilleRevenue.cs program (See Program Below) so that it uses the Contestant class and performs the following tasks: The program prompts the user for the number of contestants in this year’s competition; the number must be between 0 and 30. The program continues to prompt the user until a valid value…
Q2\B\ True or false ( answer three) 1- Abstract data types cannot be implemented in procedural languages such as C and Pascal. 2- Although methods and fields can be static, constructors cannot be static. 3- One problem with OOP when create a Class it can never be changed. 4- polymorphysim is extensively used in implementing inheritance.
Question: Mr. Hamza is working as an accountant in the Octal Company. He wants to calculate salary of his company employees. Develop a java program to calculate salary using the concept of abstract based on the following instructions. Save the project/file as AccountantYourID. A) Abstract Class name: YourFirstName_Octal Abstract Member Method: – to calculate and return salary salary() B) Class name: Employee extends YourFirstName_Octal Member variables: wage, noOfDays, bonus Member Method : – parameterized constructor to initialize member variables – to calculate and return salary salary = (wage3 * noOfDays) / 4 + bonus C) Controlling class : – To create an object of Employee – To print salary of the Employee – To print bonus of Employee
in c++, write a class named Airline with the following properties and functionality.* Airline-owned fleet (variable that holds the number of aircraft in the fleet named Fleet)* A structure that holds all airline flights (a suitable container must be used from STL)* A structure that holds flights and reservations (an appropriate container must be used from STL)O reservations must be questionable with flight numbers* Creating a flight reservation* Change your flight reservation* Cancel a flight reservation* Total number of passengers per year* Total number of flights per year* Annual total flight hours• Annual total travelled the road* Adding new flightsO flight numbers must be a randomly generated 4-digit integerthese flight numbers are unique to each flight, two flights cannot have the same number
Q3\ define: Early binding, Inheritance.
Discuss the following and give examples of each: a) Constructor b) Friend Functions c) Virtual functions d) Polymorphism e) Multilevel Inheritance
10. Using the concept of hybrid Inheritance write a C++ program with following specification a) Create three classes student, test and sports b) Class test inherits student c) Class student contains protected access modifier which has variable roll number d) Class student contains public access modifier which contains function get_number which accepts students IDnumber and put_number display students IDnumber e) Class test contains protected members mrk1 and mrk2 f) Public access modifier in class test contains function get_marks which accepts marks 1 and 2 and also function put_marks which displays marks obtained in subject 1 and subject 2 e) Class sports contains protected members score B. Public access modifier in class test contains function get_score which accepts score and also function put_score which displays marks obtained in sports h. Finally calculate total marks which in sum of sports marks + subject 1 marks+ subject 2 marks Description: Hybrid Inheritance is combination of…
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C++ Programming. Theme : Encapsulation and inheritance Task : General setting. The program must contain: • base class X, which includes two elements x1, x2 of type int, • constructor with parameters for creating objects in dynamic memory area, • destructor, • virtual methods for viewing the current state and reinstalling base class objects to a new state. • derived class Y, including one element y of type int , • a constructor with parameters and an initializer list, passing data to the base class constructor, • overridden methods for viewing the current state of objects and reinstalling them to a new state. Create a Run method in the derived class that defines: Value х1×х2-у