Starting Out with C++: Early Objects (9th Edition)
9th Edition
ISBN: 9780134400242
Author: Tony Gaddis, Judy Walters, Godfrey Muganda
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 13, Problem 13RQE
Write two statements that use the pets file stream object to open a file named pets.dat. (Show how to open the file with a member function and at definition.) The file should be opened for input.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Write two statements that use the people file stream object to open a file named people.dat. (Show how to open the file with a member function and at definition.) The file should be opened for output.
PROGRAM NEEDS TO MATCH EXAMPLE PHOTO
Write a program ( lab6.cpp ) that gives and takes advice on program writing. The program starts by writing a piece of advice to the screen and asking the user to type in a different piece of advice. The program then ends. The next person to run the program receives the advice given by the person who last ran the program. The advice is kept in a file, and the contents of the file change after each run of the program. You can use your editor to enter the initial piece of advice in the file so that the first person who runs the program receives some advice. Allow the user to type in advice of any length so that it can be any number of lines long. The user is told to end his or her advice by pressing the Return key two times. Your program can then test to see that it has reached the end of the input by checking to see when it reads two consecutive occurrences of the character ‘\n’.
Hints:- You need to look at each character as it is read to see if it is…
please code in pythonredact_file: This function takes a string filename. It writes a new file that has the same contentsas the argument, except that all of the phone numbers are redacted. Assume that the filename has onlyone period in it. The new filename is the same as the original with '_redacted' added before theperiod. For instance, if the input filename were 'myfile.txt', the output filename would be'myfile_redacted.txt'. Make sure you close your output file.The first hard task in this function is to make the output filename from the input filename that waspassed in. You can break it into two pieces by splitting on the dot or by using the index method andslicing. Then put it back together again using string concatenation.We are also working with files in this one. To open a file with a filename stored in the variable fname,in read mode use the open function as such: fp = open(fname). You will need to open the outputfile in write mode: open(fname, 'w'). Then you can traverse the…
Chapter 13 Solutions
Starting Out with C++: Early Objects (9th Edition)
Ch. 13.1 - Name three different C++ classes that can be used...Ch. 13.1 - Name three different C++ classes that can be used...Ch. 13.1 - What is the purpose of the second parameter to the...Ch. 13.1 - Why is it important for a program to close an open...Ch. 13.1 - Which file open flag causes all output to take...Ch. 13.1 - Which file open flag causes the contents of an...Ch. 13.1 - What happens if ios: :out is used by itself to...Ch. 13.1 - What happens if ios::out is used by itself to open...Ch. 13.1 - Write a sequence of C++ statements that reads in...Ch. 13.1 - Write a sequence of C++ statements that reads in...
Ch. 13.1 - Show how to use the constructor of the fstream...Ch. 13.1 - Consider two parallel arrays of the same size, one...Ch. 13.3 - Make the required changes to the following program...Ch. 13.3 - Describe the purpose of the eof member function.Ch. 13.3 - Assume the file input.txt contains the following...Ch. 13.3 - Describe the difference between reading a file...Ch. 13.3 - Describe the difference between the getline...Ch. 13.3 - Describe the purpose of the put member function.Ch. 13.3 - What will be stored in the file out.dat after the...Ch. 13.3 - The following program skeleton, when complete,...Ch. 13.5 - Write a short program that opens two files...Ch. 13.5 - How would the number 479 be stored in a text file?...Ch. 13.5 - Describe the differences between the write member...Ch. 13.5 - What arc the purposes of the two arguments needed...Ch. 13.5 - What are the purposes of the two arguments needed...Ch. 13.5 - Describe the relationship between fields and...Ch. 13.5 - Prob. 13.27CPCh. 13.7 - Describe the difference between the seekg and the...Ch. 13.7 - Describe the difference between the tellg and the...Ch. 13.7 - Describe the meaning of the following file access...Ch. 13.7 - What is the number of the first byte in a file?Ch. 13.7 - Briefly describe what each of the following...Ch. 13.7 - Describe the mode that each of the following...Ch. 13 - Prob. 1RQECh. 13 - Before a file can be used, it must first beCh. 13 - When a program is finished using a file, it shouldCh. 13 - The__________ header file is required for file I/O...Ch. 13 - Prob. 5RQECh. 13 - The_____________ file stream data type is for...Ch. 13 - The____________ file stream data type is for input...Ch. 13 - The ______ file stream data type is for output...Ch. 13 - Write a statement that defines a file stream...Ch. 13 - Write a statement that defines a file stream...Ch. 13 - Write a statement that defines a file stream...Ch. 13 - Write two statements that use the people file...Ch. 13 - Write two statements that use the pets file stream...Ch. 13 - Write two statements that use the places file...Ch. 13 - If a file fails to open, the file stream object...Ch. 13 - Write a program segment that defines a file stream...Ch. 13 - The same formatting techniques used with ______...Ch. 13 - The ______ member function reports when the end of...Ch. 13 - The ______ function reads a line of text from a...Ch. 13 - The _______ member function reads a single...Ch. 13 - The _____ member function writes a single...Ch. 13 - Prob. 22RQECh. 13 - Prob. 23RQECh. 13 - Prob. 24RQECh. 13 - In C++, _______ provide a convenient way to...Ch. 13 - The _______ member function writes raw binary data...Ch. 13 - The _______ member function reads raw binary data...Ch. 13 - The ______ operator is necessary if you pass...Ch. 13 - In _______ file access, the contents of the file...Ch. 13 - In _____ file access, the contents of a file may...Ch. 13 - The _______ member function moves a files read...Ch. 13 - The ______ member function moves a files write...Ch. 13 - The _______ member function returns a files...Ch. 13 - The _______ member function returns a files...Ch. 13 - The ______ mode flag causes an offset to be...Ch. 13 - The ______ mode flag causes an offset to be...Ch. 13 - The ______ mode flag causes an offset to he...Ch. 13 - A negative offset causes the files read or write...Ch. 13 - Give a pseudocode algorithm for determining the...Ch. 13 - Give a pseudocode algorithm for comparing two...Ch. 13 - Prob. 41RQECh. 13 - Suppose that you have two text files that contain...Ch. 13 - Each of the following programs or program segments...Ch. 13 - File Previewer Write a program that asks the user...Ch. 13 - File Display Program Write a program that asks the...Ch. 13 - Punch Line Write a program that reads and prints a...Ch. 13 - Tail of a File Write a program that asks the user...Ch. 13 - String Search Write a program that asks the user...Ch. 13 - Sentence Filter A program that processes an input...Ch. 13 - File Encryption Filter File encryption is the...Ch. 13 - File Decryption Filter Write a program that...Ch. 13 - Letter Frequencies The letter e is the most...Ch. 13 - Put It Back C++ input stream classes have two...Ch. 13 - Prob. 11PCCh. 13 - Insertion Sort on a File II Modify the program...Ch. 13 - Prob. 13PCCh. 13 - Prob. 14PCCh. 13 - Inventory Program Write a program that uses a...Ch. 13 - Inventory Program Write a program that uses a...Ch. 13 - Group Project 17. Customer Accounts This program...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
What is the difference between a class and an instance of a class?
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
What is the main advantage of parallel transfer over serial transfer of binary data?
Digital Fundamentals (11th Edition)
What is pseudocode?
Starting Out With Visual Basic (7th Edition)
It has been suggested that the control software for a radiation therapy machine, used to treat patients with ca...
Software Engineering (10th Edition)
Explain the problems that denormalized tables may have for insert, update, and delete actions.
Database Concepts (8th Edition)
The ________ object is assumed to exist and it is not necessary to include it as an object when referring to it...
Web Development and Design Foundations with HTML5 (9th Edition) (What's New in Computer Science)
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
- Data File: Example #1AAAAABBBBBCCCCCDDDDDAAEBCBAFBBCDCECDADDEFEEFFFExample #2AAATAABTBBBBCCCCTCDDTDDDAASAABBSBBCCSCCDSDDDEEEAEEFBFFFDDF Write a program that will give the user a brief introduction, then allow the user to type in the name of the file to be analyzed, the name of the data file to generate, and then process the data to match the output that is shown below. This DNA test measures the various parts of the sequence and assigns them a letter. While the letters could be anything from A to Z, the only letters that matter for this test are the letters {A,B,C,D} all other letters can be ignored completely. A sample will be tested, given a length of time and then tested again. Each time the scientist will generate a line of data. Here is one Example: Example #1 AAAAABBBBBCCCCCDDDDD AAEBCBAFBBCDCECDADDEFEEFFF At first glance the sample looks significantly different after the second test. But if you look at the data, you will note that since we only care about A,B,C,D’s that the…arrow_forwardIn Python do the following: Writing to Files: write code to write to a file called ‘writefile.txt’To write in a file we first have to open the file. That is what the first line should do so that Pythoncreates a file object to represent the file, and give the object the name f (variable). We use this variableto refer to the file. To write to the file, use the print statement with the optional file argument thatspecifies the file to write to. When done writing, close the file to make sure all the changes are saved.Remember, if writefile.txt already exists, its contents will be overwritten.arrow_forwardTRUE FALSE The dereference operator * is used to obtain the address of a variable. The void functions return noting when called. the flag eof() is FALSE at the beginning of a text file. There is no way to show text on graphic screen The reserved word struct is used when declaring a void function.arrow_forward
- Computer Science In C++ can someone make a code where it reads a txt file and displays the text file that has pending shipping orders. I would also like the code to be able to modify the text file in terms of canceling shipping orders or view shipping orders.arrow_forwardString data type is not allowed you can make use of CString instead (char arrays with null termination). Write a menu driven C++ program to perform the following four tasks in a single file, if user press option 1 the task 1 get solved and so on: 1. Display the Item_Id of the products which are not available in stock on screen. 2. Copy all the available products data in a separate file. 3. Read the original input file and update the price of each item by 10 percent increase in the original price and save the complete information in separate file. 4. Try to save the information processed in part 3 in the original file by updating it instead of using separate file.arrow_forwardFile redirection allows you to redirect standard input (keyboard) and instead read from a file specified at the command prompt. It requires the use of the < operator (e.g. java MyProgram < input_file.txt) True or Falsearrow_forward
- C# 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_forwardIn C++ Create a class Employee with the data members such as name, id and total salary. Create a file as “Employee_Data” as binary file and write the information of four employees to that file. Open that file in reading mode and only display the record of 2nd and 3rd employeesarrow_forwardBody Mass Index Write a program that reads names, weights, and heights from bmi.dat (provided with starter code; do not change the file name). Use the information to calculate and displays a person’s body mass index (BMI). The BMI is often used to determine whether a person with a sedentary lifestyle is overweight or underweight for his or her height. A person’s BMI is calculated with the following formula: BMI = weight × 703 / height2 where weight is measured in pounds and height is measured in inches. The file is in the format name weightInKG heightInCM You will read the name, weight and height for 4 people from the file, and you will need to convert the weights in the file to pounds (note that 1 kilogram = 2.2 pounds) and the heights to inches (2.54 cm = 1 inch). The program should display the person's name along with the calculated BMI and a message indicating whether the person has optimal weight, is underweight, or is overweight. Your output should look like A person’s weight…arrow_forward
- ID numbers of students receiving scholarships from the governorship and students receiving scholarships from themunicipality in a province are kept in two separate files (“governer.txt“ and “municipal.txt”). Write a program that comparesthese two files, identifies students who receive scholarships from both institutions at the same time, and saves their namesand surnames in the "common.txt" filearrow_forwardSUBJECT NAME IS C++: WAP to read 4 student objects and write them into a file, then print total number of student number in file. After that read an integer and print details of student stored at this number in the file using random access and file manipulatorsarrow_forwardPython - Next Birthdate In this task, we will write a program that reads birthdate data from a given CSV file, and given the current date, determines which person's birthday will be celebrated next. Create a function with the following signature: nextBirthdate(filename, date) filename: parameter, which represents the CSV filename. date: parameter, which represents the current date. The function should open the CSV file, read the birthdate data, and determine which person's birthday will be celebrated next, given the current date. The name of the person should be returned. In other words, given a date, find the person whose birthday is next. Sample Run birthdates.csv Draven Brock, 01/21/1952 Easton Mclean, 09/02/1954 Destiny Pacheco, 10/10/1958 Ariella Wood, 12/20/1961 Keely Sanders, 08/03/1985 Bryan Sloan,04/06/1986 Shannon Brewer, 05/11/1986 Julianne Farrell,01/29/2000 Makhi Weeks, 03/20/2000 Lucian Fields, 08/02/2018 Function Call nextBirthdate("birthdates.csv", "01/01/2022") Output…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
C - File I/O; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=cEfuwpbGi1k;License: Standard YouTube License, CC-BY
file handling functions in c | fprintf, fscanf, fread, fwrite |; Author: Education 4u;https://www.youtube.com/watch?v=aqeXS1bJihA;License: Standard Youtube License