Entry point for the application. Exactly zero or one command-line argume\ nts are expected. * If a filename is given as an argument, then the program should print the\ contents of that * file to standard output. If a single dash (i.e., "-") is given as an arg\ ument, then * the program should print the contents of standard input. * * @param args the command-line arguments */

Entry point for the application. Exactly zero or one command-line argume\ nts are expected. * If a filename is given as an argument, then the program should print the\ contents of that * file to standard output. If a single dash (i.e., "-") is given as an arg\ ument, then * the program should print the contents of standard input. * * @param args the command-line arguments */

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter13: File Input And Output

Section: Chapter Questions

Problem 7PE

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FILE* inFile = fopen("filenam.txt", "r"); Given the above code segment, which of the following would output "FILE NOT FOUND" if the file could not be opened? Group of answer choices if(inFile == NULL) { printf("FILE NOT FOUND"); } if(inFile) { printf("FILE NOT FOUND"); } if(!inFile->is_open()) { printf("FILE NOT FOUND"); } None of these ============= What does sscanf do? Group of answer choices Reads from a file Reads from a keyboard Reads from a string Writes to a screen =========== What comes first in the software development life cycle? Group of answer choices Algorithm design Identifying the problem Coding Testing
in this function is f a variable? in what other way can we write this function? why does mode not work in this function? def process_lines(filename, mode): # Actually this is function is used to read the file line by line with open(filename, 'r') as f: # file opened msg = f.read() # read the message return msg # return message def write_lines(lines): # function to write some into message with open('results.txt', 'w') as f: # open the text file f.writelines(lines) # write some line print("Output written to results.txt") # print the output what does os.path do?def check_file_exists(filename): # check weather this file is exist or not to avoid exception from os.path import exists # import library of exist file_exists = exists(filename) # if file exist return file_exists
Given a text file opened for reading identified by tfile, which of the following will assign the next five characters from the file to the variable five_ch five_ch = tfile.read_char(5) tfile = five_ch.read_char(5) tfile = five_ch.read_char(6) five_ch = tfile.read_char(6)
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Write a program that opens a (text) file and displays the contents of that file one line at a time. You must obtain the name of the input file for this program via prompt and user input, not via command line arguments. After a line has been displayed, the program should wait for the user to press the <Enter> key before displaying the next line in the file. you must be sure to test your program using the Sample Text File provided at the end of this problem (excerpt.txt). Also make sure to comment when wrting your program. Sample Text File There was nothing so VERY remarkable in that; nor did Alice think it so VERY much out of the way to hear the Rabbit say to itself, `Oh dear! Oh dear! I shall be late!' (when she thought it over afterwards, it occurred to her that she ought to have wondered at this, but at the time it all seemed quite natural); but when the Rabbit actually TOOK A WATCH OUT OF ITS WAISTCOAT- POCKET, and looked at it, and then hurried on, Alice started to her…
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I have a "user.json" file that looks like this { "something@somewhere.com": "maybe", "john@beatles.uk": "lennonj!", "paul@beatles.uk": "mccartney", "mick@rollingstones.uk": "jaggerm!" } using java script i have to parse this file and then check this email and file conbinations against user input This is the code i m using to parse the file. function lookUpCredentials(filePath, cb) { fs.readFile(filePath, (err, fileData) => { if (err) { return cb && cb(err); } try { const object = JSON.parse(fileData); return cb && cb(null, object); } catch (err) { return cb && cb(err); } }); } lookUpCredentials("./user.json", (err, data) => { if (err) { console.log(err); return; } credentials = data; }); and this is the code i m using to get input from the user app.post('/login', (req, res) => { let username =…
Directions: Typing make at the command line should create executable named bitflip. Only bitflip.c and Makefile are included in the input unless permission is given for any other files. Program should have consistent indentation. Code should be readable with good variable and function names. No use of "break or continue statements" except in a switch. Program must exit with a return code of 0 on success and an error code in other cases. The program used getopt to parse the command line. Whenever an error occurs on the command line the user is given the usage statement and an appropriate error message if needed. If the -o option is used the output will go to a file named as specified without changing the filename at all otherwise it will go to stdout. -e option works as specified using bitwise operations. -f option works as specified using bitwise operations. -a option works as specified using bitwise operations. -s option works as specified using bitwise operations. Program outputs…
Directions: Typing make at the command line should create executable named bitflip. Only bitflip.c and Makefile are included in the input unless permission is given for any other files. Program should have consistent indentation. Code should be readable with good variable and function names. No use of "break or continue statements" except in a switch. Program must exit with a return code of 0 on success and an error code in other cases. The program used getopt to parse the command line. Whenever an error occurs on the command line the user is given the usage statement and an appropriate error message if needed. If the -o option is used the output will go to a file named as specified without changing the filename at all otherwise it will go to stdout. -e option works as specified using bitwise operations. -f option works as specified using bitwise operations. -a option works as specified using bitwise operations. -s option works as specified using bitwise operations. Program outputs…
Please help me modify my code according to the error prompt #include <stdio.h> void processData(const char* inputFilePath, const char* outputFilePath) { FILE* inputFile = fopen(inputFilePath, "r"); FILE* outputFile = fopen(outputFilePath, "w"); int n; fscanf(inputFile, "%d", &n); // Read the number of data points fprintf(outputFile, "%d\n", n); // Write the number of data points to output int value; for (int i = 0; i < n; i++) { fscanf(inputFile, "%d", &value); // Read the data point int squaredValue = value * value; // Compute the square of the data point fprintf(outputFile, "%d\n", squaredValue); // Write the squared value to output } fclose(inputFile); fclose(outputFile);} int main() { processData("input_file.dat", "output_file.dat"); return 0;}
Two of the menu options (#2 and #3) are unfinished, and you need to complete the code necessary to write to and read from a binary file. You will need to read through the code to find the functions that are called by these options, and then supply the missing code. Please help me get menu 2 and 3 to display properly.the .cpp and .h have the information:.cpp file: // Corporate Sales Data Outputusing namespace std; #include <iostream>#include <fstream>#include <stdlib.h>#include "HeaderClassActivity1.h" int main() { Sales qtrSales[NUM_QTRS]; while (true) { cout << "Select an option: " << endl; cout << "1. Input data" << endl; cout << "2. Write data to file" << endl; cout << "3. Read data from file" << endl; cout << "4. Display sales" << endl; cout << "99. End program" << endl; int menuItem; cin >> menuItem; if (menuItem ==…
Chapter 4. PC #14. Line Numbers (page 265) Write a program that asks the user for the name of a file. The program should display the contents of the file with each line preceded with a line number followed by a colon. The line numbering should start at 1. I should be easily type input1.txt and easily print out the output. Test Case 1 Please enter the file name or type QUIT to exit:\nquitENTER Test Case 2 Please enter the file name or type QUIT to exit:\nbadfilename.txtENTERFile: badfilename.txt does not exist.\nPlease enter the file name again or type QUIT to exit:\nquitENTER Test Case 3 Please enter the file name or type QUIT to exit: \ninput1.txt ENTER1: a\n2: b\n3: c\n4: d\n