Starting Out with C++ from Control Structures to Objects (8th Edition)
8th Edition
ISBN: 9780133769395
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 12, Problem 9PC
File Encryption Filter
File encryption is the science of writing the contents of a file in a secret code. Your encryption
Although there are complex encryption techniques, you should come up with a simple one of your own. For example, you could read the first file one character at a time, and add 10 to the ASCII code of each character before it is written to the second file.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
These are the steps to take if you accidentally delete a file and need to get it back.
Prog 1. File Encryption: File encryption is the science of writing the contents of a file in a secret code. Your encryption program should work like a filter reading the contents of one file, modifying each character in the input file into a code, and then writing the coded characters out to a second file. The second file will be a version of the first file but written in a secret code.
In Notepad or something similar, you will create a file with text in it. It should be several lines long. Your program should read the file character by character and make some change to the character before writing that character to a second new encrypted file. See program 13-8 to see how to read and write one character at a time.
You may come up with an encryption technique of your own or use something simple like adding 10 to the ASCII code of each character in the file before it is written to the second file.
Why is it vital to make sure that a file is designed correctly? What difference does it make whether you know how the data in your text file is arranged if you already have it?
Chapter 12 Solutions
Starting Out with C++ from Control Structures to Objects (8th Edition)
Ch. 12.1 - Which file access flag would you use if you want...Ch. 12.1 - Prob. 12.2CPCh. 12.1 - Assuming diskInfo is an fstream object, write a...Ch. 12.1 - Assuming diskInfo is an fstream object, write a...Ch. 12.1 - Assuming diskInfo is an fstream object, write a...Ch. 12.1 - Write a statement that defines an fstream object...Ch. 12.5 - Assume the file input.txt contains the following...Ch. 12.5 - Describe the difference between reading a file...Ch. 12.5 - What will be stored in the file out.txt after the...Ch. 12.10 - Describe the difference between the seekg and the...
Ch. 12.10 - Describe the difference between the tellg and the...Ch. 12.10 - Describe the meaning of the following file access...Ch. 12.10 - What is the number of the first byte in a file?Ch. 12.10 - Briefly describe what each of the following...Ch. 12.10 - Describe the mode that each of the following...Ch. 12 - What capability does the fstream data type provide...Ch. 12 - Which file access flag do you use to open a file...Ch. 12 - Assume the file data.txt already exists, and the...Ch. 12 - How do you combine multiple file access flags when...Ch. 12 - Should file stream objects be passed to functions...Ch. 12 - Under what circumstances is a file stream objects...Ch. 12 - Under what circumstances is a file stream objects...Ch. 12 - Under what circumstances is a file stream objects...Ch. 12 - How do you read the contents of a text file that...Ch. 12 - What arguments do you pass to a file stream...Ch. 12 - What arguments do you pass to a file stream...Ch. 12 - Prob. 12RQECh. 12 - Prob. 13RQECh. 12 - How do you get the byte number of a files current...Ch. 12 - If a program has read to the end of a file, what...Ch. 12 - How do you determine the number of bytes that a...Ch. 12 - How do you rewind a sequential-access file?Ch. 12 - The _____ file stream data type is for output...Ch. 12 - If a file fails to open, the file stream object...Ch. 12 - The same formatting techniques used with...Ch. 12 - The _____ function reads a line of text from a...Ch. 12 - The ____________ member function reads a single...Ch. 12 - The ________member function writes a single...Ch. 12 - Prob. 24RQECh. 12 - __________ files contain data formatted as...Ch. 12 - Prob. 26RQECh. 12 - Prob. 27RQECh. 12 - The ___________ member function writes raw binary...Ch. 12 - The __________ member function reads raw binary...Ch. 12 - Prob. 30RQECh. 12 - In ___________ file access, the contents of the...Ch. 12 - In __________ file access, the contents of a file...Ch. 12 - The _____________ member function moves a files...Ch. 12 - The ___________ member function moves a files...Ch. 12 - The __________ member function returns a files...Ch. 12 - The ___________ member function returns a files...Ch. 12 - The __________ mode flag causes an offset to be...Ch. 12 - The __________ mode flag causes an offset to be...Ch. 12 - The ________ mode flag causes an offset to be...Ch. 12 - A negative offset causes the files read or write...Ch. 12 - Write a statement that defines a file stream...Ch. 12 - Write two statements that use a file stream object...Ch. 12 - Write two statements that use a file stream object...Ch. 12 - Write two statements that use a file stream object...Ch. 12 - Write a program segment that defines a file stream...Ch. 12 - Write code that opens the file data.txt for both...Ch. 12 - Write code that determines the number of bytes...Ch. 12 - The infoFile file stream object is used to...Ch. 12 - T F Different operating systems have different...Ch. 12 - T F fstream objects are only capable of performing...Ch. 12 - T F ofstream objects, by default, delete the...Ch. 12 - T F ifstream objects, by default, create a file if...Ch. 12 - T F Several file access flags may be joined by...Ch. 12 - T F A file may be opened in the definition of the...Ch. 12 - T F If a file is opened in the definition of the...Ch. 12 - T F A file stream objects fail member function may...Ch. 12 - T F The same output formatting techniques used...Ch. 12 - T F The operator expects data to be delimited by...Ch. 12 - T F The getline member function can be used to...Ch. 12 - T F It is not possible to have more than one file...Ch. 12 - T F Binary files contain unformatted data, not...Ch. 12 - T F Binary is the default mode in which files are...Ch. 12 - T F The tellp member function tells a file stream...Ch. 12 - T F It is possible to open a file for both input...Ch. 12 - fstream file(ios::in | ios::out);...Ch. 12 - ofstream file; file.open (info.dat, ios::tin); if...Ch. 12 - fstream file("info.dat"); if (!file) { cout ...Ch. 12 - fstream dataFile("info.dat", ios:in | ios:binary);...Ch. 12 - Prob. 69RQECh. 12 - fstream dataFi1e("info.dat", ios:in); char...Ch. 12 - Prob. 71RQECh. 12 - fstream inFile("info.dat", ios:in); int x;...Ch. 12 - File Head Program Write a program that asks the...Ch. 12 - File Display Program Write a program that asks the...Ch. 12 - Punch Line Write a program that reads and prints a...Ch. 12 - Tail Program Write a program that asks the user...Ch. 12 - Line Numbers (This assignment could be done as a...Ch. 12 - String Search Write a program that asks the user...Ch. 12 - Sentence Filter Write a program that asks the user...Ch. 12 - Array/File Functions Write a function named...Ch. 12 - File Encryption Filter File encryption is the...Ch. 12 - File Decryption Filter Write a program that...Ch. 12 - Prob. 11PCCh. 12 - Prob. 12PCCh. 12 - Inventory Program Write a program that uses a...Ch. 12 - Inventory Screen Report Write a program that reads...Ch. 12 - Average Number of Words If you have downloaded...Ch. 12 - Customer Accounts This program should be designed...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
A sentence is in disjunctive normal form (DNF) if it is the disjunction of conjunctions of literals. For exampl...
Artificial Intelligence: A Modern Approach
Arrowhead Display Write a program that uses nested loops to display the arrowhead pattern shown below.
Starting Out with C++: Early Objects (9th Edition)
(Radiocarbon dating) Carbon taken from a purported relic of the time of Christ contained 4.6104 atoms of 14C pe...
Differential Equations: Computing and Modeling (5th Edition), Edwards, Penney & Calvis
Add a method, printDetails, to the Book class. This should print details of the author, title, and pages to the...
Objects First with Java: A Practical Introduction Using BlueJ (6th Edition)
Write a SELECT statement that will return the TradingSymbol column from every row in table.
Starting Out with Java: From Control Structures through Objects (6th Edition)
What is primary difference between an abstract class and a regular class?
Starting out with Visual C# (4th Edition)
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
- What can you determine about a file by looking at it's properties ?arrow_forwardWhen importing a Text file, why is it important to move through each step of the Text Import Wizard?arrow_forwardPrintWriter and Scanner - text file I/O DataInputStream and DataOutputStream - binary file I/O RandomAccessFile - binary file i/o where every record is the same number of bytes so that you can seek to a specific record ObjectInputStream and ObjectOutputStream - read and write objects.arrow_forward
- Why does it matter how a file is laid out? Why is it important to understand the structure of the information in your text file?arrow_forwardat the True false beginning of a file the flag eof() is ifstream True false declares files that we can write on close() is used True false to close the graphics window data True false structures can have members of different typesarrow_forwardThis is the most effective file organization method in which one must handle all data records in a file namedarrow_forward
- Word List File Writer: Write a program that asks the user how many words they would like to write to a file, andthen asks the user to enter that many words, one at a time. The words should be writtento a file (in python)arrow_forwardCreate file Write data Read data Delete data And print the messages through System.out.println. Use buffer reader to read file Programming language : Javaarrow_forwardA file's physical description differs from its logic in the following ways:arrow_forward
- Objective: Practice file handling Lab Description: Write a python script (with comments) that computes the average score for an unknown number of students in a file. Specifically, your script should: Ask for a filename name (that has scores in it) Open the scores file Verify the scores file opened correctly Read the student's name and their four scores Display the student's name, all of their scores and their average to the screen Writes the students name and the scores' average to a file name "averages.csv" Close both files For example, the following are examples of correct execution (with the text in bold being the input from the user): Input file project4-inputA.txt: Output to the screen: Output file "averages.csv" Мary 76 89 82 100 Joey Please enter the scores filename: project4-inputA.txt # Student name, grade average You entered project4-inputA.txt Opened scores file project4-inputA.txt Mary scores: 76.0 89.0 82.0 100.0 average: 86.75 Joey scores: 91.0 81.0 83.0 95.0 average:…arrow_forwardWhen a program makes use of a file, what are the three steps that it must take?arrow_forwardPython The program should open a specified text file, read its contents, then use the dictionary to writean encrypted version of the file’s contents to a second file. Each character in the second file should contain the code for the corresponding character in the first file. Your program contains both encryption AND decryption functions. Please do not put them in separate programs. Your program provides a MENU that offers the user a choice to encrypt or decrypt the file and call the respective function. Your encoder function will use the Caesar Ciphe to translate the file Your encoder function will first convert all input characters to upper case. This means that the output of encrypted text should be in CAPITALS. You must use a string method to convert! Your implementation must use a dictionary Your implementation must use string methods for converting casearrow_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
Files & File Systems: Crash Course Computer Science #20; Author: CrashCourse;https://www.youtube.com/watch?v=KN8YgJnShPM;License: Standard YouTube License, CC-BY
UNIX Programming (Part - 10) The File System (Directories and Files Names); Author: ITUTEES;https://www.youtube.com/watch?v=K35faWBhzrw;License: Standard Youtube License