Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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What is the easiest approach to replicate a C++ array of shared pointers into another array? You're given a task to solve. Duplicating a shared pointer copies its objects, right? Explain
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- There is a close association between pointers and arrays. Recall that an array variable is actually a pointer variable that points to the first indexed variable of the array. Array elements can be accessed using pointer notation as well as array notion. One problem with static arrays is that we must specify the size of the array when we write the program. This may cause two different problems: (1) we may create an array much larger than needed; or (2) we may create one that is smaller than what is needed. In general, this problem is created because we do not know the size of the array until the program is run. This is where dynamic arrays can be used. The new expression can be used to allocate an array on the freestore. Since array variables are pointer variables, you can use the new operator to create dynamic variables that are arrays and treat these dynamic array variables as if they were ordinary arrays. Array elements can also be accessed using pointer notation as well as array...arrow_forwardI have seen some solutions to this problem in Bartleby's library that make no sense to me. I am learning C++, more specifically working with dynamic integers and have become confused with what has been provided previously by others. Using dynamic integers, can I get help with creating a class named 'largeIntegers' so that an object of this class can store an integer of any number of digits. If I could get help with setting up operations to add, subtract, multiply, and compare integers stored in two objects. Also, if someone could explain and help myself create constructors to properly initialize objects and functions to set, retrieve, and print the values of objects. There are three files I am working with: main.cpp, largeIntegers.h, and largeIntegers.cpp largeIntegers.cpp #include <iostream> using namespace std; largeIntegers.h //Specification file largeIntegers.h #ifndef H_largeIntegers #define H_largeIntegers #include <iostream> using namespace std;...arrow_forwardpls give mommens by expression and statements , thanks Recall that in C++, there is no check on an array index out of bounds. However, during program execution, and array index out of bounds can cause serious problems. Also, in C++, the array index starts at zero. Design and implement the class myArray that solves the array index out of bounds problem, and also allows the user to begin the array index starting at any integer, positive or negative. Every object of type myArray is an array of type int. During execution, when accessing an array component, if the index is out of bounds, the program must terminate with an appropriate error message. Consider the following statements: myArray<int> list(5); //Line 1 myArray<int> myList(2, 13); //Line 2 myArray<int> yourList(-5, 9); //Line 3 This statement in line one declares list to be an array of five components, the component type is int, and components are: list[0], list[1],..., list[4];...arrow_forward
- The book makes the claim that "All built-in data types ... are ADTs". Think specifically about primitive data types (int, char, double, etc.): Do you agree or disagree? If you agree, explain why built-in data types fulfill the definition of an ADT. (Be sure to refer to at least one specific example.) If you disagree, explain why (give an example of a built-in type and why it doesn't meet the criteria for an ADT). (To be clear: "built-in" means part of the language specification and often given special recognition by the compiler. Classes that are part of a language's library -- such as ArrayList in Java -- aren't considered "built-in".)arrow_forwardMust be in C# and this assignment only Rare Collection. We can make arrays of custom objects just like we’vedone with ints and strings. While it’s possible to make both 1D and 2D arrays of objects(and more), for this assignment we’ll start you out with just one dimensional arrays.Your parents have asked you to develop a program to help them organize the collectionof rare CDs they currently have sitting in their car’s glove box. To do this, you will firstcreate an AudioCD class. It should have the following private attributes. String cdTitle String[4] artists int releaseYear String genre float conditionYour class should also have the following methods: Default Constructor: Initializes the five attributes to the following default values:◦ cdTitle = ""◦ artists = {"", "", "", ""}◦ releaseYear = 1980◦ genre = ""◦ condition = 0.0 Overloaded Constructor: Initializes the five attributes based on values passedinto the formal parameters◦ If condition is less than 0.0 or greater than 5.0,...arrow_forwardAnswer the given question with a proper explanation and step-by-step solution. ANSWER IN C++arrow_forward
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