EBK STARTING OUT WITH C++ FROM CONTROL
9th Edition
ISBN: 8220106714379
Author: GADDIS
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 15, Problem 9PC
File Filter
A file filter reads an input file, transforms it in some way, and writes the results to an output File. Write an abstract file filter class that defines a pure virtual function for transforming a character. Create one derived class of your file filter class that performs encryption, another that transforms a file to all uppercase, and another that creates an unchanged copy of the original file. The class should have the following member function:
void doFilterfifstream &in, ofstream &out)
This function should be called to perform the actual filtering. The member function for transforming a single character should have the prototype:
char transformfehar ch)
The encryption class should have a constructor that takes an integer as an argument and uses it as the encryption key.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
EmpFromFile
Implement a function readEmpFromFile that takes a FILE * as the only argument and returns a pointer to a struct employee. This function should read the information from the file (reversing what writeEmpToFile does), create a new employee and fill in the data. If the FILE has no more info (is at end of file), this function should return NULL. This function must also ensure any employee actually created (not the NULL) is added to the array (as is done in createEmployee).
Change main to load employees from a file using a command called LOAD which is given to the program using (using your readEmpFromFile function you just wrote).
void main(void) {
int end = 1;
char * command;
char buff[256];
char * findEmp;
char findBuff[256];
char * sortType;
char sortBuff[256];
char hire[] = "HIRE";
char list[] = "LIST";
char quit[] = "QUIT";
char find[] = "FIND";
char fire[] = "FIRE";
char _sort[] = "SORT";
char salary[] =…
readEmpFromFile
Implement a function readEmpFromFile that takes a FILE * as the only argument and returns a pointer to a struct employee. This function should read the information from the file (reversing what writeEmpToFile does), create a new employee and fill in the data. If the FILE has no more info (is at end of file), this function should return NULL. This function must also ensure any employee actually created (not the NULL) is added to the array (as is done in createEmployee).
Change main to load employees from a file using a command called LOAD which is given to the program using (using your readEmpFromFile function you just wrote).
void main(void) {
int end = 1;
char * command;
char buff[256];
char * findEmp;
char findBuff[256];
char * sortType;
char sortBuff[256];
char hire[] = "HIRE";
char list[] = "LIST";
char quit[] = "QUIT";
char find[] = "FIND";
char fire[] = "FIRE";
char _sort[] = "SORT";
char salary[] =…
Assessment Description
Honors Students: Complete this assignment according to the directions provided in the "Honors Addendum," located in Class Resources.
This activity has multiple parts. All parts must be completed prior to documentation submission.
Part 1: Reading and Writing Text Files.
In this activity, you will learn how to read and write text files using non buffered and buffered File I/O classes, then learn how to parse a String into tokens using the String split() method, and finally, how to handle exceptions using various approaches.
Part 2: Reading and Writing JSON Files.
In this activity, you will learn how to read, write, and serialize JSON files to and from Java Objects.
Refer to the instructions within "Activity 4 Guide" to complete the assignment.
APA style is not required, but solid academic writing is expected.
This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful…
Chapter 15 Solutions
EBK STARTING OUT WITH C++ FROM CONTROL
Ch. 15.1 - Here is the first line of a class declaration....Ch. 15.1 - What is the name of the derived class in the...Ch. 15.1 - Suppose a program has the following class...Ch. 15.2 - What is the difference between private members and...Ch. 15.2 - What is the difference between member access...Ch. 15.2 - Suppose a program has the following class...Ch. 15.3 - What will the following program display? #include...Ch. 15.3 - What will the following program display? #include...Ch. 15.7 - Explain the difference between overloading a...Ch. 15.7 - Prob. 15.10CP
Ch. 15.7 - Prob. 15.11CPCh. 15.7 - What will the following program display? #include...Ch. 15.7 - What will the following program display? #include...Ch. 15.7 - What will the following program display? #include...Ch. 15.7 - What will the following program display? #include...Ch. 15.8 - Does the following diagram depict multiple...Ch. 15.8 - Does the following diagram depict multiple...Ch. 15.8 - Examine the following classes. The table lists the...Ch. 15.8 - Examine the following class declarations: class...Ch. 15 - What is an is a relationship?Ch. 15 - A program uses two classes: Dog and Poodle. Which...Ch. 15 - How does base class access specification differ...Ch. 15 - What is the difference between a protected class...Ch. 15 - Can a derived class ever directly access the...Ch. 15 - Which constructor is called first, that of the...Ch. 15 - What is the difference between redefining a base...Ch. 15 - Prob. 8RQECh. 15 - What is an abstract base class?Ch. 15 - A program has a class Potato, which is derived...Ch. 15 - What base class is named in the line below?class...Ch. 15 - What derived class is named in the line below?...Ch. 15 - What is the class access specification of the base...Ch. 15 - What is the class access specification of the base...Ch. 15 - Protected members of a base class are like...Ch. 15 - Complete the table on the next page by filling in...Ch. 15 - Complete the table below by filling in private,...Ch. 15 - Complete the table below by filling in private,...Ch. 15 - A derived class inherits the ________ of its base...Ch. 15 - When both a base class and a derived class have...Ch. 15 - An overridden base class function may be called by...Ch. 15 - When a derived class redefines a function in a...Ch. 15 - A(n) __________ member function in a base class...Ch. 15 - ________ binding is when the compiler binds member...Ch. 15 - __________ binding is when a function call is...Ch. 15 - _________ is when member functions in a class...Ch. 15 - When a pointer to a base class is made to point to...Ch. 15 - A(n) __________ class cannot be instantiated.Ch. 15 - A(n) _______ function has no body, or definition,...Ch. 15 - A(n) _________ of inheritance is where one class...Ch. 15 - _______ is where a derived class has two or more...Ch. 15 - In multiple inheritance, the derived class should...Ch. 15 - Write the first line of the declaration for a...Ch. 15 - Write the first line of the declaration for a...Ch. 15 - Suppose a class named Tiger is derived from both...Ch. 15 - Write the declaration for class B. The classs...Ch. 15 - T F The base classs access specification affects...Ch. 15 - T F The base classs access specification affects...Ch. 15 - T F Private members of a private base class become...Ch. 15 - T F Public members of a private base class become...Ch. 15 - T F Protected members of a private base class...Ch. 15 - T F Public members of a protected base class...Ch. 15 - T F Private members of a protected base class...Ch. 15 - T F Protected members of a public base class...Ch. 15 - T F The base class constructor is called after the...Ch. 15 - T F The base class destructor is called after the...Ch. 15 - T F It isnt possible for a base class to have more...Ch. 15 - T F Arguments are passed to the base class...Ch. 15 - T F A member function of a derived class may not...Ch. 15 - Prob. 51RQECh. 15 - T F A base class may not be derived from another...Ch. 15 - class Car, public Vehicle { public: Car(); Car();...Ch. 15 - class Truck, public : Vehicle, protected {...Ch. 15 - class SnowMobile : Vehicle { protected: int...Ch. 15 - class Table : public Furniture { protected: int...Ch. 15 - class Tank : public Cylinder { private: int...Ch. 15 - class Three : public Two : public One { protected:...Ch. 15 - Employee and ProductionWorker Classes Design a...Ch. 15 - ShiftSupervisor Class In a particular factory, a...Ch. 15 - TeamLeader Class In a particular factory, a team...Ch. 15 - Prob. 4PCCh. 15 - Time Clock Design a class named TimeClock. The...Ch. 15 - Essay Class Design an Essay class that is derived...Ch. 15 - PersonData and CustoraerData Classes Design a...Ch. 15 - PreferredCustomer Class A retail store has a...Ch. 15 - File Filter A file filter reads an input file,...Ch. 15 - File Double-Spacer Create a derived class of the...Ch. 15 - Course Grades In a course, a teacher gives the...Ch. 15 - Ship. CruiseShip, and CargoShip Classes Design a...Ch. 15 - Pure Abstract Base Class Project Define a pure...Ch. 15 - Prob. 14PC
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Type in and run the six programs presented in this chapter. Compare the output produced by each program with th...
Programming in C
T F: A local variable may be accessed by any other procedure in the same Form file.
Starting Out With Visual Basic (7th Edition)
You should not write code that modifies the contents of the counter variable in the body of a For loop.
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
In one approach to identifying the classes in a problem, the programmer identifies the _______ in a description...
Starting Out with Python (3rd Edition)
Rewrite the programs TestBreak and TestContinue in Listings 5.12 and 5.13 without using break and continue.
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Combine the statements that you wrote in Exercise 4.5 into a Java application that calculates and prints the su...
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Challenge Activity 1: Word List File Writer and Reader (a)Write a console and GUI program using *PYTHON* that asks the user how many words they would like to write to a file, and then asks the user to enter that many words, one at a time. The words should be written to a file. (b) Write another program that reads the words from the file and displays the following data: The number of words in the file. The longest word in the file. The average length of all of the words in the file.arrow_forwardC# please Write a program that will create file with at least 10 lines. Each line of your file should have information delimited by some delimiter (I.e., commas, spaces, slashes, symbols, etc.). After your file has been created with the proper amount of data, you should read your file line by line and display without the delimiters in the same program after closing your writer. Additionally, the information stored into your file should be data that is gathered from a separate class. Your program should save your file in a specific directory. To promote flexibility, your program should check to see if the chosen directory exists prior creating it, and if it does not exist, your program should create it for you. Additionally, you should allow the user to enter the names of the directory and file instead of hard-coding it into your program.arrow_forwardPROGRAMMING LANGUAGE: C++ Implement another class with name UniversityClass which is composed of one teacher and multiple students(use student array) as data members. Another data member of UniversityClass is CourseName that is just a string data member. Write a function in UniversityClass to take Teacher Name, Student names and course name from user. Insert these records in a text file and print screenshot of that text file. Print UniversityClass code here. Print main function here. Print screenshot of text file here.arrow_forward
- C++ Struct Pointers Help: I have a file called names.txt. Write a program that reads each line and then store the name and nickname under an individual pointer to the class Person. names.txt: Norman, Normie Justine, Jussy Richard, Dick Shelley, Shell class Person { public: string name; string nickname; Person(string name, nickname) { this->name=name; this->nickname = nickname; } }; Print out each pointer's name and nickname to verify that it has been stored.arrow_forwardA file filter reads an input file, transforms it in some way, and writes the results to an output file. Write an abstract file filter class that defines a pure virtual function for transforming a character. Create one subclass of your file filter class that performs encryption, another that transforms a file to all uppercase, and another that creates an unchanged copy of the original file. The class should have a member function void doFilter(ifstream &in, ofstream &out)that is called to perform the actual filtering. The member function for transforming a single character should have the prototypechar transform(char ch)The encryption class should have a constructor that takes an integer as an argument and uses it as the encrytion key.arrow_forwardSample run: Your 1st vector contains the following elements January February March April May June July August September October November December Your 2nd vector contains the following elements May June Julyarrow_forward
- Put the class definition in EV.h and the implementation of the constructors and functions in EV.cpp 1. Define a class called "EV", that represents the information of an electric vehicle. The EV is defined with these attributes: model (string), range(int), unit (string) and year (int). Functions of the EV class must perform the following operations: 1. A default constructor which sets all the numeric instance variables to zero. 2. A constructor with 4 parameters which sets the 4 instance variables to the corresponding values passed. 3. Implement a getter function for each of the 4 instance variables that will return the value of the instance variable. For example, the getX() function for the instance variable model must be called getModel(). 4. Implement a setter function for each instance variable that will assign to the instance variable to the value passed. For example, the setX() function for the instance variable model must be called setModel(). 5. An info function: this function…arrow_forwardJava Problem The teacher at a school needs help grading an exam with a number of True/False questions. The students’ IDs and test answers are stored in a file. The first entry of the file contains the answer to the test in the form: TTFTFTTTFTFTFFTTFTTF Every other entry in the file is the student’s ID, followed by a blank, followed by the students’ response. For instance, the entry: ABC54102 T FTFTFTTTFTTFTTF TF The student’s ID is ABC54102, answer to question 1 is True, the answer to question 3 is False. Also, the student did not answer question 2 and question 18. The exam has 20 questions. Here is the grading policy: each correct answer is awarded two points, each wrong answer get -1 point, and no answer gets 0 point. Write a program that processes the test data. The output should be the student’s ID, followed by the answers, followed by the test score (total points), followed by the test grade. Assume the following grade scale will be used: 90%-100%, A; 80%-89.99%, B; 70%-79.99%,…arrow_forwardThe struct song is defined as : typedef struct { char* title; char* artist; int year; } song; Write the following two functions maintaining a database of entries of type song in a file in c language . (int add_song(const char* file_name, const song s);The function gets the name of a file, and a song. If the song is not in the file, the function adds it to the file and returns 1. Otherwise, the function does not modify the file and returns 0. song* find_song(const char* file_name, const char* title); The function gets the name of a file and a title of a song. It searches the file for the song with the given title. If a song is found, it returns a pointer to the song with all the details. If not found, the function returns NULL. You may assume the song titles are unique.arrow_forward
- c++ ▪ Create Class Student Using header and cpp file (.h & .cpp). ▪Data Members: Name , ID and GPA. ▪Member Functions: DisplayStudentDetails >> this function prints the Name, ID and GPA of the studentarrow_forwardFirst programming homework Create a class of records for a gradebook called Rec. The data should be private, and should include a firstname, lastname, array of three grades, and a field for average grade. Build two constructors: a default constructor and a constructor that takes the first and last name. Build a function to read the data, either from a file or from cin. The read function reads the two names and three grades, but does not read the average grade. Build a write function that writes the data either to a file or to cout. The write function prints all of the data on one line with spaces between fields. Build a function to calculate the average grade field. Build an overloaded operator == to compare two records. This should be implemented as a friend function. Declare the constructors and functions in the body of the class, but implement them outside the class. I will provide you with a driver called hw1.cpp in ~cthorpe/public/142 and with a test file HW1.txt in the same…arrow_forward/////////////////////////////////////////////////////////////////////// CLASS PROVIDED: sequence (a container class for a list of items,// where each list may have a designated item called// the current item)//// TYPEDEFS and MEMBER functions for the sequence class:// typedef ____ value_type// sequence::value_type is the data type of the items in the sequence.// It may be any of the C++ built-in types (int, char, etc.), or a// class with a default constructor, an assignment operator, and a// copy constructor.// typedef ____ size_type// sequence::size_type is the data type of any variable that keeps// track of how many items are in a sequence.// static const size_type CAPACITY = _____// sequence::CAPACITY is the maximum number of items that a// sequence can hold.//// CONSTRUCTOR for the sequence class:// sequence()// Pre: (none)// Post: The sequence has been initialized as an empty sequence.////…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Introduction to Classes and Objects - Part 1 (Data Structures & Algorithms #3); Author: CS Dojo;https://www.youtube.com/watch?v=8yjkWGRlUmY;License: Standard YouTube License, CC-BY