Assume that Driver is a predefined class and that the declaration Driver drivers; has already been performed. Then the instruction: drivers= new Driver [5]; reserves memory space for: | 5 reference variables and 5 Driver objects O 5 Driver objects O a single reference variable that points to a single Driver object O a single Driver object O 5 reference variables, each of which can point to a separate Driver object

Assume that Driver is a predefined class and that the declaration Driver drivers; has already been performed. Then the instruction: drivers= new Driver [5]; reserves memory space for: | 5 reference variables and 5 Driver objects O 5 Driver objects O a single reference variable that points to a single Driver object O a single Driver object O 5 reference variables, each of which can point to a separate Driver object

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

Problem Statement: Develop an Inventory Management System (IMS) for a small retail business that allows the user to manage their product inventory. The system should enable the user to add, edit, update, and delete product information stored in a .csv file. The IMS should be console-based with a menu-driven interface. Requirements: 1. Classes and Objects: - Create a `Product` class with attributes such as `productID`, `productName`, `price`, `quantity`. - Implement a `InventoryManager` class that will handle operations like adding, editing, updating, and deleting products. - Use a `Main` class with the `main` method to run the program and display the menu. 2. File Operations: - Store product information in a .csv file named `inventory.csv`. - Implement methods in `InventoryManager` for reading and writing to the .csv file. 3. Menu-Driven Interface: - Implement a menu in the `Main` class that allows the user to select operations like Add, Edit, Update, Delete, and View Inventory. - Use…
What are the three things that you are required to perform for classes that include member variables that are pointers?
please explain the flowchart:
1)Create a complete Java class that can be used to create a Computer object as described below:A Computer has a:- Manufacturer- Disk Size- Manufacturing Date- Number of coresa) Add all instance variables (data encapsulation is expected).b) The class must have getters and setters for all instance variables.c) The class must have two constructors: a no-arg constructor and a constructor thatreceives input parameters for each instance variable.d) Implement a toString() method for your class. 2)Write a Java program TestComputer, which creates three Computer objects with the informationbelow:a) - Manufacturer: Dell- Disk Size: 1189160321024 bytes- Manufacturing Date: April 1, 2020- Number of cores: 2b) - Manufacturer: Apple Inc- Disk Size: 269283712040 bytes- Manufacturing Date: March 31, 2020- Number of cores: 4c) Create your own Object. You can mimic your actual personal computer or use a no-argsconstructor.Print the three objects using toString() method to show all data fields
Why is it not recommended to code under the finalize method of a class which executes when the garbage collector reclaims memory of an object of a class?
/* Interface File: Movie.h Declaration of Movie Class (Variables - "Data Members" or "Attributes" AND Functions - "Member Functions" or "Methods") */ #ifndef MOVIE_H // Include Guard or Header Guard -If already defined ignore rest of code #define MOVIE_H // Otherwise, define MOVIE_H #include<string> // Note: Not "using namespace std;" or even "using std::string" class Movie { private: std::string title = ""; // Explict scope used --> std::string int year = 0; public: Movie(std::string title = "", int year = 1888); // Declaring a Default Constructor ~Movie(); // A Destructor used for freeing up resources void set_title(std::string title_param); std::string get_title() const; // "const" safeguards class variable changes within function std::string get_title_upper() const; void set_year(int year_param); int get_year() const; }; //…
Instructions-Java Assignment is to define a class named Address. The Address class will have three private instance variables: an int named street_number a String named street_name and a String named state. Write three constructors for the Address class: an empty constructor (no input parameters) that initializes the three instance variables with default values of your choice, a constructor that takes the street values as input but defaults the state to "Arizona", and a constructor that takes all three pieces of information as input Next create a driver class named Main.java. Put public static void main here and test out your class by creating three instances of Address, one using each of the constructors. You can choose the particular address values that are used. I recommend you make them up and do not use actual addresses. Run your code to make sure it works. Next add the following public methods to the Address class and test them from main as you go: Write getters and…
Computer Network Project An optometrist has several different machines/robots in the office. How would you build a blueprint for an application that can tell if all the machines/robots are ready for operation? Examples of the machines not being ready would be: wires are not plugged in correctly, the machine is not cleaned, et; Include a few classes with functions. Explain the structure of the code and how you can make it scale for any enterprise.
The operator that is required to access members of classes and structs is called: a. Colon operator b. Scope resolution operator c. Operator overloading d. Member access operator e. None of the answers Answer: What is the name of the program that uses and interacts with the class? Answer: By assuming that all libraries are included, replace MYFUNCTION with the proper function name to make the code correct: 001010 111101101 01010101111110 1010101010101 111010101010 0101100 vector> MyVector; int rows= 10, cols = 4; MyVector.MYFUNCTION(rows, vector(cols, 100)); cout << MyVector [0] [1] << endl; for (int i } = 0; i < MyVector.size(); i++) { for (int j 0; j < MyVector[i].size(); j++) cout << MyVector[i][j] << " "; cout << endl;
Task-1: Both computer and software engineering programs blend the broad engineering discipline courses with the computer science specific courses. Hence, it is a good idea to represent the "course" as an object before attempting to write a program to help students get register to the courses. The programmer can think of the abstraction of a course object as the representation of title, code, and credit values only. Write a class declaration for the course object that includes a constructor, a set and a get member function for each data member, and a member function that returns the course information upon request. For instance, for this course it should prepare a string like “COMP218 - Object-Oriented Programming". a) Use C++-strings for the representation of string of characters. b) Use C-strings for the representation of string of characters.
1. Why should the attributes of a class be private? 2. Can a Time class definition that includes both of the following constructors: Time( int h = 0, int m = 0, int s = 0 ); Time(): be used to default construct a time Time object? if not, explain why. 3. Write a statement that creates a pointer to a Circle object and instantiates the Circle object being pointed to. Use dynamic memory and initialize the object to the value 5.