Mylab Programming With Pearson Etext -- Access Card -- For Starting Out With C++: From Control Structures Through Objects, Brief Version
9th Edition
ISBN: 9780135159576
Author: GADDIS
Publisher: PEARSON EDUCATION (COLLEGE)
expand_more
expand_more
format_list_bulleted
Expert Solution & Answer
Chapter 12, Problem 69RQE
Explanation of Solution
Syntax error:
An error which occurred on the source code of a program is referred as “syntax error”; because the computer programs strictly follows the syntax rules, if the code fails to prove its language syntax format then the compiler will throw an error.
Purpose of the given code:
The purpose of the given code is to open the file “info.dat” using “fstream” file stream object.
List of errors present in the given code:
The code that is given contains some of the syntax error and it is listed as follows:
Error 1:
- The file open statement is an error in the given code.
- In C++, files can be opened using file stream object definition. In definition, the open statement contains two arguments such as file name and file access mode.
- The format for including the file access mode in file open statement as follow as:
- ios::in
- The scope resolution operator “::” is missing in the given file open statement.
Therefore, the given file open statement is modified as:
fstream dataFile(“info.dat”, ios::in);
Error 2:
- The “get()” function cannot be used to read the string value...
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Python Panda DataFrme
Use this file: names.txt
Write a Python script that reads this file into a dataframe.
Find the max and min age.
Using the loc indexing operator, extract rows 2 & 3
## Screenshot of names.txt attached
C++
Write a program that will allow a user to enter students into a database.
The student information should include full name, student ID, GPA and status.
The program should allow delete any student based on student ID. You may not use a vecto or an array only the list function.
//main.cpp
#include "Person.h"#include "Seller.h"#include "Powerseller.h"#include <iostream>#include <list>#include <fstream>#include <string>
using namespace std;
void printMenu();void printSellers(list<Seller*> sellers);void checkSeller(list<Seller*> sellers);void addSeller(list<Seller*> sellers);void deleteSeller(list<Seller*> &sellers);
int main() { list<Seller*> sellers; ifstream infile; infile.open("sellers.dat"); if (!infile) { cerr << "File could not be opened." << endl; exit(1); } char type; while (!infile.eof()) { infile >> type; if (type == 'S') { Seller* newseller = new Seller; newseller -> read(infile); sellers.push_back(newseller); } if (type == 'P') { Powerseller* newpowerseller = new Powerseller; newpowerseller -> read(infile); sellers.push_back(newpowerseller); } } infile.close();…
Chapter 12 Solutions
Mylab Programming With Pearson Etext -- Access Card -- For Starting Out With C++: From Control Structures Through Objects, Brief Version
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...
Knowledge Booster
Similar questions
- The program, word_frequency, counts the number of occurrences of words in a document. The program takes a filename as a parameter and performs the task. Get the program to run using the attached text file called document.txt. The file contains a piece of text. After you run the program and understand it's logic, modify word_frequency.py to use a binary search tree instead of a dictionary. Tasks: 1. Import a binary search tree 2. Change the filename in the program to reflect the change(s) made Python Only and no other coding languages. Import the module first before running it. Please show output when done. (build off of this file and try not to change too much) word_frequency.py: import sysfilename = sys.argv[1] freq = {}for piece in open(filename).read().lower().split():# only consider alphabetic characters within this pieceword = ''.join(c for c in piece if c.isalpha())if word: # require at least one alphabetic character freq[word] = 1 +…arrow_forwardFile Analysis USING PYTHON- DICTIONARY NOTE FIND ATTACHED BELOW 2 FILES THA SHOULD BE USED FOR THIS ASSIGNMENT Using python, Write a program that reads the contents of two text files and compares them in the followingways:It should display a list of all the unique words contained in both files.It should display a list of the words that appear in both files.It should display a list of the words that appear in the first file but not the second.It should display a list of the words that appear in the second file but not the first.It should display a list of the words that appear in either the first or second file, but notboth.Hint: Use set operations to perform these analyses. ATTACHED FILES first FILENAME: first_file.txt The quick brown fox jumps over the lazy dog. Second FILENAME: second_file.txt Jack be nimble, Jack be quick, Jack jump over the candlestick. . For the program, you need to write: Comments for all the values, constants, and functions IPO Variables Pseudocodearrow_forwardA Ring, refers to a record chain, the last of which refers to the first record, in the chain, is called a pointer wxplain?arrow_forward
- def read_flights(flights_source: TextIO, routes: RouteDict) -> FlightDir: """Return the flights from flights_source, including only the ones that have an entry in routes. >>> from io import StringIO >>> flight_src = StringIO(TEST_FLIGHTS_SRC) >>> actual = read_flights(flight_src, TEST_ROUTES_DICT_FOUR_CITIES) >>> actual == TEST_FLIGHTS_DIR_FOUR_CITIES True """ flights = [] src_index = FLIGHT_DATA_INDEXES["Source airport"] dst_index = FLIGHT_DATA_INDEXES["Destination airport"] # Complete this function. for line in routes_source:arrow_forwardID 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_forwardThe program, word_frequency, counts the number of occurrences of words in a document. The program takes a filename as a parameter and performs the task. Get the program to run using the attached text file called sonet18.txt. The file contains William Shakespeare sonet18. After you run the program and understand it's logic, modify word_frequency.py to use a binary search tree instead of a dictionary. Tasks: 1. Import a binary search tree 2. Change the filename in the program to reflect the change(s) made Python Only and no other coding languages. Import the module first before running it. Please show output when done. word_frequency.py: import sysfilename = sys.argv[1] freq = {}for piece in open(filename).read().lower().split():# only consider alphabetic characters within this pieceword = ''.join(c for c in piece if c.isalpha())if word: # require at least one alphabetic character freq[word] = 1 + freq.get(word, 0) max_word = ''max_count = 0for (w,c) in…arrow_forward
- Program in C language the creation of a vector of n=5 records, each record made up of the following fields: ProductName, Quantity, Price, Include the following functions:.a) vector reading.b) Screen printing.c) Save the Vector to a file.d) Read the vector from a file.e) main().arrow_forwardhow to write a function that calls a list of files and organizes them by the assigned numeric order to them and then returns said list in order of when they were createdarrow_forwardA data dictionary is a particular kind of file that includes information about?arrow_forward
- #include "Bank.h" #include <iostream>#include <fstream>#include <string>#include <vector> using namespace std; int main() { Account** accounts = new Account * [10]; ifstream infile; infile.open("bank2.txt"); if ( !infile ) cerr << "File cannot be opened" << endl; else cout << "File Opened" << endl; string operationType; int totalAccount = 0; while (infile >> operationType) { if (operationType == "Saving") { int id; double initialBalance, minimumBalance, annualInterestRate; infile >> id >> initialBalance >> minimumBalance >> annualInterestRate; Saving* savingAccount = new Saving(); savingAccount->setInterest(annualInterestRate); savingAccount->setMinBalance(minimumBalance); accounts[totalAccount] = savingAccount; accounts[totalAccount]->setID(id);…arrow_forwardIn Unix You have a record structured file named mydata that has four columns with default delimiter (white space). Sort the file based on its second column and redirect the file to a new file called sortedData.arrow_forwardCreate a code for the bank transaction record using linked list.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage