MyProgrammingLab - For Gaddis: Starting Out with C++ From Control Structures through Objects
15th Edition
ISBN: 9780133780611
Author: Pearson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 12, Problem 67RQE
fstream file("info.dat");
if (!file)
{
cout ≪ "Could not open file.\n";
}
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Create a program that asks the user for the name of a file and then rearranges the contents of the file so that its lines are in alphabetical order. The program should modify the file, not just print its contents to the screen. Use the STL algorithm sort.
C++
File 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 False
Q3:IN SML language how would I write a string to integer function that inputs a filename and returns zero if the contents inside the file is blank.
Chapter 12 Solutions
MyProgrammingLab - For Gaddis: Starting Out with C++ From Control Structures through Objects
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
The code that follows shows an example of branching on an enumerated type value in a switch statement. Recall t...
Computer Systems: A Programmer's Perspective (3rd Edition)
(Tabular Output) Write a program that utilizes looping to produce the following table of values:
C How to Program (8th Edition)
Running the Race Write a program that asks for the names of three runners and the time, in minutes, it took eac...
Starting Out with Java: From Control Structures through Objects (6th Edition)
Could errors have occurred in a byte from Question 1 without your knowing it? Explain your answer.
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
(Frequency of characters) Write a program that prompts the user to enter the name of an ASCII text file and dis...
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
What are the bits in a binary system?
Digital Fundamentals (11th 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
- In C# create an application that writes a series of random numbers to a file. Each random number should be in the range of 1 through 100. The application should let the user specify how many random numbers the file will hold.arrow_forwardWrite code that opens an output file with the filename number_list.txt, but does not erase the file’s contents if it already exists.arrow_forwardC++ Add a search command that asks the user for a string and finds the first line that contains that string. The search starts at the first line currently displayed and stops at the end of the file. If the string is found, the line that contains it is displayed at the top. In case the user enters a string X that does not occur in the file, the program should print the error message: ERROR: string "X" was not found.arrow_forward
- Create a program that asks the user for the name of a file and then rearranges the contents of the file so that its lines are in alphabetical order. Use the STL algorithm sort.arrow_forwardTrue or false? The following statement fails if the file does not exist. ofstream file("out.txt"); Group of answer choices true falsearrow_forwardThis is the statement it gives - Write a program that reads the student information from a tab separated values (tsv) file. The program then creates a text file that records the course grades of the students. Each row of the tsv file contains the Last Name, First Name, Midterm1 score, Midterm2 score, and the Final score of a student. A sample of the student information is provided in StudentInfo.tsv. Assume the number of students is at least 1 and at most 20. Assume also the last names and first names do not contain whitespaces. The program performs the following tasks: Read the file name of the tsv file from the user. Open the tsv file and read the student information. Compute the average exam score of each student. Assign a letter grade to each student based on the average exam score in the following scale: A: 90 =< x B: 80 =< x < 90 C: 70 =< x < 80 D: 60 =< x < 70 F: x < 60 Compute the average of each exam. Output the last names, first names, exam scores,…arrow_forward
- C++ (OOP) Write a program that reads a file “source.txt” and copies it’s all contents to another file “destination.txt” except vowels.arrow_forwardWriteReadData Write a program to create a file named Exercise12_15.txt, if it does not exist. Write 100 integers, created randomly, into the file using text I/O. Integers are separated by spaces in the file. Read the data back from the file and display the data in increasing order.arrow_forwardC++ Create a program that asks the user for the name of a file and then rearranges the contents of the file so that its lines are in alphabetical order. Use the STL algorithm sort.arrow_forward
- Write one line of code that reads a full line from a file with file handle fp into a string defined aschar line[256]. Do this using both fscanf and fgets.arrow_forwardAssuming that a text file named FIRST.TXT contains some text written into it, write a function namedcopyupper(), that reads the file FIRST.TXT and creates a new file named SECOND.TXT contains allwords from the file FIRST.TXT in uppercase. (write c++ code)arrow_forwardThe function file_first_chars in python takes one parameter, fname, the name of a text file, and returns a string made up of the first character from each line in the file. You may assume there are no blank lines in the file. Hint: Use a for loop to iterate over the lines of the file and accumulate the string of first characters. NOTE: Return the function, don't print For example: Test Result print(file_first_chars("wordlist1.txt")) hsaemarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTProgramming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
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