Three classes are defined as follows. Choose the correct syntax to include all three classes in the main file. //File ClassA.h #ifndef ClassA_H #define ClassA H class Class ( }; #endif //File Class8.h #ifndef ClassB_H #define ClassB_H #include "ClassA.h" class ClassB ( }; #endif //File ClassC.h #ifndef ClassC_H #define ClassC_H #include "Class8.h" class ClassC ( #endif O Class definitions can only be included in a .cpp file O #include "ClassC.h" O #include "ClassAh, ClassB.h, ClassC.h" O Not possible for the given class definitions.

Three classes are defined as follows. Choose the correct syntax to include all three classes in the main file. //File ClassA.h #ifndef ClassA_H #define ClassA H class Class ( }; #endif //File Class8.h #ifndef ClassB_H #define ClassB_H #include "ClassA.h" class ClassB ( }; #endif //File ClassC.h #ifndef ClassC_H #define ClassC_H #include "Class8.h" class ClassC ( #endif O Class definitions can only be included in a .cpp file O #include "ClassC.h" O #include "ClassAh, ClassB.h, ClassC.h" O Not possible for the given class definitions.

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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// Declare data fields: a String named customerName, // an int named numItems, and // a double named totalCost.// Your code here... // Implement the default contructor.// Set the value of customerName to "no name"// and use zero for the other data fields.// Your code here... // Implement the overloaded constructor that// passes new values to all data fields.// Your code here... // Implement method getTotalCost to return the totalCost.// Your code here... // Implement method buyItem.//// Adds itemCost to the total cost and increments// (adds 1 to) the number of items in the cart.//// Parameter: a double itemCost indicating the cost of the item.public void buyItem(double itemCost){// Your code here... }// Implement method applyCoupon.//// Apply a coupon to the total cost of the cart.// - Normal coupon: the unit discount is subtracted ONCE// from the total cost.// - Bonus coupon: the unit discount is subtracted TWICE// from the total cost.// - HOWEVER, a bonus coupon only applies if the…
8-15. Printing Models: Put the functions for the example printing_models.py in a separate file called printing_functions.py. Write an import statement at the top of printing_models.py, and modify the file to use the imported functions.
file operator code 1 // The FileOperator class that includes methods for file input and output 2 // Maham Hameed 3 import java.io.*; 4 public class FileOperator 5 { 6 // instance variables 7 private File m_file; 8 9 // constructor 10 // Do not make any changes to this method! 11 public FileOperator() 12 { 13 String fileName = "employeeData.txt"; 14 m_file = new File(fileName); 15 } 16 17 // This method writes an array of Employees into a physical file. 18 // Each line is in this format: "S-Optimus Prime-Computer Science-$1200" 19 // "S" represents StudentWorker ("F" represents Faculty) 20 public void writeFile(Employee[] employees) 21 { 22 // TODO: implement this method 23 } 24 }
This part of the quiz will contain 4 parts. A function called grade, a function called pgrade, a prototype file called grade.h and a main function. In this part you will create the main function which will do the following: main This main function will use the functions grade and pgrade to produce the grades for the following students and display the appropriate grade with the appropriate message. The semester grade will be based on the fact that the quiz average is 25% of the grade, the final is 20% of the grade, assignments is 20% of the grade and programs are 35% of the grade. The student grades are as follows: Student Name Assignments Programs Quiz Ave Final Tom 63 Francis Maria Jan 75 90 95 85 sample of output Harry Grade B Good 85 75 95 90 93 92 71 69 87 91 73 A
When a class contains a data member that is a pointer to dynamically-allocated storage, which of the following member functions should be implemented? All three of the member functions listed below should be implemented. The copy assignment operator. The copy constructor. The destructor.
2. Create a contacts module to meet the following requirements: i. Create a file named contacts.py . a. Define a class named Contacts. a. Define a member function named __init___ to meet the following requirements: a. Take a self as a positional parameter. b. Take a filename as a keyword parameter. c. Set a member variable equal to the filename. d. Set a member varialbe equal to an empty data dictionary. e. Open the filename and load the JSON decoded contents to the empty data dictionary. f. Cleanly manage the FileNotFoundError if the filename does not exist. b. Define a member function named add_contact to meet the following requirements: a. Take a self as a positional parameter. b. Take a id as a keyword parameter. c. Take a first_name as a keyword parameter. d. Take a last_name as a keyword parameter. e. If the id exists in the data dictionary, return the string error. f. Set the id:[first_name, last_name] key:value pair to the data dictionary. g. Sort the data dictionary in…
PROGRAMMING LANGUAGE: C++ I need the code for main.cpp , memberType.h , memberTypelmp.cpp The DATA for memberData.txt is given below: 410John Williams0020Lisa Berry235.5030Ron Brown10255.6840Jessey Smith00
for c++ please need three files employee.h productionWorker.h cpp file NB: NEED ANSWER THE EXCEPTION PROJECT. here is chapter 15 required 15, Employee and ProductionWorker Classes Design a class named Employee. The class should keep the following information in • Employee name • Employee number • Hire date Write one or more constructors and the appropriate accessor and mutator functions for the class. VideoNote Solving the Employee and ProductionWorker Classes Problem Programming Challenges 963 Next, write a class named ProductionWorker that is derived from the Employee class. The ProductionWorker class should have member variables to hold the following information: • Shift (an integer) • Hourly pay rate (a double ) The workday is divided into two shifts: day and night. The shift variable will hold an integer value representing the shift that the employee works. The day shift is shift 1, and the night shift is shift 2. Write one or more constructors and the appropriate accessor and…
2. Name the demo file firstname_lastname_PE2 Create a program that simulates a dumpster diving game. Dumpster diving is when you search for loot in large industrial sized trash bins. In the game you will roll a ten-sided dice to determine what the user has received. Use the UML below as a guide for the Die class (Name the class Die.java). Die - sideUp: int = 10 - value: int + Die() + roll(): void + getvalue(): int Below are some suggestions to aid you in designing the game: • Each round of the game is performed as an iteration of a loop that repeats as long as the player wants to "dive" for more items. • At the beginning of each round, the program will ask the user whether or not he or she wants to continue diving. The program simulates the rolling of a ten-sided die Each item that can be caught is represented by a number generated from the die; for example, 1 for "a half-eaten sandwich", 2 for "a left shoe", 3 for "a broken watch", and so on. • Each item the user catches is worth a…
(1) Create three files: ItemToPurchase.h - Class declaration ItemToPurchase.cpp - Class definition main.cpp - main() function Build the ItemToPurchase class with the following specifications: Default constructor Public class functions (mutators & accessors) SetName() & GetName() SetPrice() & GetPrice() SetQuantity() & GetQuantity() Private data members string itemName - Initialized in default constructor to "none" int itemPrice - Initialized in default constructor to 0 int itemQuantity - Initialized in default constructor to 0 (2) In main(), prompt the user for two items and create two objects of the ItemToPurchase class. Before prompting for the second item, call cin.ignore() to allow the user to input a new string.Ex: Item 1 Enter the item name: Chocolate Chips Enter the item price: 3 Enter the item quantity: 1 Item 2 Enter the item name: Bottled Water Enter the item price: 1 Enter the item quantity: 10 (3) Add the costs of the two items together and output the…
/ CONSTANT// static const int DEFAULT_CAPACITY = ____// IntSet::DEFAULT_CAPACITY is the initial capacity of an// IntSet that is created by the default constructor (i.e.,// IntSet::DEFAULT_CAPACITY is the highest # of distinct// values "an IntSet created by the default constructor"// can accommodate).//// CONSTRUCTOR// IntSet(int initial_capacity = DEFAULT_CAPACITY)// Post: The invoking IntSet is initialized to an empty// IntSet (i.e., one containing no relevant elements);// the initial capacity is given by initial_capacity if// initial_capacity is >= 1, otherwise it is given by// IntSet:DEFAULT_CAPACITY.// Note: When the IntSet is put to use after construction,// its capacity will be resized as necessary.//// CONSTANT MEMBER FUNCTIONS (ACCESSORS)// int size() const// Pre: (none)// Post: Number of elements in the invoking IntSet is returned.// bool isEmpty() const// Pre: (none)//…
After solving question 1 you should split the file into 4 different files. File 1: car.h //prototypes of car class functions File 2:human.h//prototypes of human class functions File 3: merge.cpp //details to functions of the car and human classes File 4: main.cpp //details of main function