C++ for Engineers and Scientists
4th Edition
ISBN: 9781133187844
Author: Bronson, Gary J.
Publisher: Course Technology Ptr
expand_more
expand_more
format_list_bulleted
Question
Chapter 8.4, Problem 4E
Program Plan Intro
- Include library files for various operations.
- Declare required variables.
- Declare two objects of ifstream and ofstream.
- Declare two function header, with name,getOpen() and inOut.
- Define both the declared functions.
- Use if statement to check the specific file.
- Open the file, by using the open() method.
- int main() function is used to perform all the tasks.
- Display the calculated results to the user.
Program Description:The main purpose of the program is to modify the program 8.9 so that if the entered filename exists then an appropriate message is displayed and an option is provided to user for entering a new filename or to edit the existing one.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
DO NOT WRITE MAIN! Only write the function. A 50% minimum deduction will be made if main is included. No libraries or comments should be specified.
(OP4) Write a function to prompt the user for the filename, open the file, and verify that it opened. If the file does not open, an error message should be printed and the user re-prompted. The function should use the string passed in for the prompt string. The function should not return until the file is open.
The function prototype:
void openInputFile( ifstream &, string );
ifstream& - the stream to be opened.
string - the prompt to be written out to the user. Use this string when prompting the user.
(C ONLY) The program expects the name of an input
file and an output file to be given by the user. If the
user does not input any names, default file names
should be used, such as input.txt and output.txt.
The input files have lines which look like this: 3
Tester College; 1909 33001 The first number
represents the rank; it is followed by the school
name, year founded, and approximate number of
students. Read the list of colleges into an array of
structures. You may assume that the maximum size
of a college name string is 64. The program should
use either the insertion sort algorithm or the
selection sort algorithm to sort the array in
descending order by rank. Display any k consecutive
schools requested by the user. For instance, if the
user enters 12, the program displays the first 2
schools in a readable format of your choice. If the
user enters 15, the program displays the first five
schools, if the user enters 2 7, display 7 schools
beginning with the one at index 1 (2 - 1), and so…
(python)
Write a function sum_file(f) that takes a filename f. Each line in f contains a single number. You should write to the last line in the file the sum of all the numbers written in the file.
Chapter 8 Solutions
C++ for Engineers and Scientists
Ch. 8.1 - Prob. 1ECh. 8.1 - (Practice) a. Write a set of two statements...Ch. 8.1 - Prob. 3ECh. 8.1 - Prob. 4ECh. 8.1 - Prob. 5ECh. 8.1 - Prob. 8ECh. 8.1 - Prob. 9ECh. 8.1 - Prob. 10ECh. 8.2 - Prob. 1ECh. 8.2 - (Practice and modify) a. Enter and run Program...
Ch. 8.2 - (Practice and modify) a. Write a C++ program that...Ch. 8.2 - (Practice) Determine the OS command or procedure...Ch. 8.2 - Prob. 5ECh. 8.2 - (Data processing) a. Write a C++ program that...Ch. 8.2 - Prob. 7ECh. 8.2 - Prob. 8ECh. 8.2 - Prob. 9ECh. 8.3 - Prob. 1ECh. 8.3 - Prob. 2ECh. 8.3 - Prob. 3ECh. 8.3 - Prob. 4ECh. 8.3 - Prob. 5ECh. 8.3 - Prob. 6ECh. 8.4 - Prob. 1ECh. 8.4 - Prob. 2ECh. 8.4 - Prob. 3ECh. 8.4 - Prob. 4ECh. 8.5 - (Practice) Write a C++ program to create the...Ch. 8.5 - Prob. 2ECh. 8.5 - Prob. 3ECh. 8.5 - Prob. 4ECh. 8.5 - Prob. 5ECh. 8 - Prob. 1PPCh. 8 - (Data processing) a. Store the following data in a...Ch. 8 - (Data processing) Write a C++ program that allows...Ch. 8 - (Data processing) Write a C++ program that permits...Ch. 8 - (Data processing) Write a C++ program that reads...Ch. 8 - (Data processing) Write a C++ program that reads...Ch. 8 - Prob. 7PPCh. 8 - (Data processing) A bank’s customer records are to...Ch. 8 - (Inventory) Create an ASCII file with the...
Knowledge Booster
Similar questions
- (IN PYTHON) Problem 1 Write a function word_count() that performs the following actions: Opens a file called “novel.txt”. You can assume that the file exists and is located in the same directory as your code file. Reads in the contents of the file, and stores it in a variable called text. Uses the split() function to obtain a list containing all of the individual words in text. For details on how to use split(), you can consult this site: https://www.w3schools.com/python/ref_string_split.asp For this question, assume that all words will be separated by spaces. Returns the number of words in the lisarrow_forward(FRP7) Write a function that reads data from a file. The file has already been opened and verified. The data should be saved in the array of type ship. The size of the array is passed in the int parameter and the number of records read is return in the last parameter, by reference. The file should be read until end of file has been reached or the array is full. struct ship{ string shipCaptain; string shipName; }; The function prototype isvoid readFile( ifstream&, ship[ ], int, int& ); ifstream - The already open file ship[ ] - array of structs where the data from the file will be stored. int - the size of the array. int& - the number of records read from the file. This value is set by the function before returning return- the number of records read from the file, returned by the function. The amount of data in the file is unknown but there is no bad data. The file format is the shipsName followed by the shipsCaptiain . Example: MillenniumFalcon HansSoloarrow_forward[no. 19] When would you use a while loop? a. when you want some code to continue running as long as some condition is true b. when you want to run code in one file while code in another file is also running c. when you want to minimize the use of strings in your code d. when you need to run two or more chunks of code at once within the same filearrow_forward
- Exercise 1. (Spell Checker) Write a program spell_checker.py that accepts words from standard input; looks up each word in the file data/misspellings.txt that maps misspelled words to their correct spellings; and if it exists (ie, is misspelled), writes the word to standard output along with the correct spelling. >- "/workspace/project6 $ python3 spell_checker.py Try nto to become a man of sucess but rather try to become man of value. * Albert Einstein nto -> not sucess -> success E spell.checker.py from instream import InStream from symboltable import SymbolTable import stdio # Entry point. def main (): # Set inStream to an input stream built from the file 'data/misspellings.txt'. # Set lines to the list of lines read from inStream. .. # Set misspellings to a new symbol table object. .. for in ...: # For each line (of the form 'misspelling correction ') in lines... # Set tokens to the list obtained by splitting line using the split () method from str. # Insert the pair tokens…arrow_forwardModified Programming ). (Count vowels and consonants, file input, nested-loops, switch statement) Assume that letters A, E, I, O and U are the vowels. Write a program that reads strings from a text file, one line at a time, using a while-loop. You do the following operations within each loop: • Read one line from the input file and store it in a string; Count the number of vowels and consonants (using either while-loop or for-loop) in the file string. The while-loop will terminate when the end-of-file is reached. After the loop is finished, the program displays the total number of vowels and consonants in the text file. [A text file, named “ass4_Q6_input.txt", is provided as your testing input file.]arrow_forwardneed help: (Address book) Write a program that stores, retrieves, adds, and updates addresses as shown in Figure 17.20. Use a fixed-length string for storing each attribute in the address. Use random access file for reading and writing an address. Assume that the size of name, street, city, and zip is 32, 32, 20, 2, 5 chars, respectivelyarrow_forward
- (python) Write a function startWith(File, Let) that takes a file name and a letter. Each line in the file contains 1 word. The function should store a new file with all the words that start with letter Let. Example: startWith (‘Test1-3.txt’, ‘A’) Source File: (Test1-3.txt) Output File: (Test1-3New.txt) Hi Airport Airport Apple Hello Apple Mangoarrow_forward(c) Write a Haskell program that: • Reads two files, called "input1.txt" and "input2.txt". • Interleaves the lines of the two files. • Writes the result to a file called "output12.txt" . You may make use of any functions in the Reference (pp5-7).arrow_forward(Intro to Python) Assume there is a file called numbers.txt (in the current working directory) with unknown number of integer values on each line. Write a program to read the numbers from the file, add them and then display the total. Use try-except clause to handle errors associated with working with files. This should work for any number of values in the file. If the file does not exist, it should not throw a runtime error. Sample output is, Read 6 numbers They are 5 7 8 3 100 14 Their total is 137arrow_forward
- Objectives: practice with math, while-loops, sentinels, input validation, functions Starting with the provided file circles.py, write a program that uses functions to compute the area and circumference of a circle of a user-specified radius. The program consists of a main () function and two other functions, as follows: main (): Asks the user for the radius of a circle (floating point number). If the user enters a radius of zero, the program prints “Goodbye!" and ends. If the user enters a negative radius, the program prints “Invalid radius!", and asks again for a radius, and keeps asking until the user enters zero or a positive number. If the user enters a positive number, the program calls the two other functions and prints: A circle of radius R has circumference C and area A. (where R is the radius number, C is the calculated circumference, and A is the calculated area.) After printing the circumference and area, the program asks again for a new radius. [20 pts] circumference (r) :…arrow_forward(Q. Write a program that will read a file from the user and writes its content in another file such that each line contains only 8 words. Coding language python Don't use pointers and arrays keep the program as simple as possible (beginner's level) Paste the screenshots of full program with output) inputfile = input('Enter filename to read: ') outputfile = input('Enter filename to write: ') f = open(inputfile,'r') f1 = open(outputfile,'w') for lines in f: f1.writelines(lines) f.close() f1.close() ***write comments on each line of the above written program and make changes in it with accordance to question if anything is wrong and also check if the underlined part of question is solved in program or notarrow_forward(Write a C++ program) This homework is from our textbook page 459 # 16. The Dodgers recently won the World Series vs the Tampa Bay Rays. Attached are two files: Teams.txt - This file contains a list of serveral Major League baseball teams in alphabetical order. Each team is listed in the file has won the World Series at least once. WorldSeries Winners.txt - This file contains a chronological list of the World Series' winning teams from 1903-2020. (The first line of the file is the name of the team that won in 1903, and the last line is the name of the team that won in 2020. Note the World Series was not played in 1904 or 1994.) Write a program that displays the contents of the Teams.txt file on the screen and prompts the user to enter the name of one of the teams. The program should then display the number of times that team has won the World Series in the time period from 1903 to 2020. In the program, 2 arrays are needed: TeamList array and Winners array. TeamList array will…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 EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable 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