A text file contains: Ana Bob Cpc aaX bBy cCz Aba Bub Cxc Write a regular expression that will match only lines 1, 2, and 3.

>> classicVinyls.cpp For the following program, you will use the text file called “vinyls.txt” attached to this assignment. The file stores information about a collection of classic vinyls. The records in the file are like the ones on the following sample: Led_Zeppelin                 Led_Zeppelin                 1969                                          1000.00 The_Prettiest_Star          David_Bowie                  1973                                          2000.00 Speedway                      Elvis_Presley                   1968                                          5000.00 Spirit_in_the_Night        Bruce_Springsteen         1973                                          5000.00 …   Write a declaration for a structure named vinylRec that is to be used to store the records for the classic collection system. The fields in the record should include a title (string), an artist (string), the yearReleased (int), and an estimatedPrice(double). Create the following…

please save number random and file and when print on monitor read from file and every num in single line

Creates a sales receipt, displays the receipt entries and totals,  and saves the receipt entries to a file .Prompt the user to enter the  - Item Name Item Quantity Item Price Display the item name, the quantity, and item price, and the extended price (Item Quantity multiplied by Item Price) after the entry is made Save the item name, quantity, item price, and extended price to a file When you create the file, prompt the user for the name they want to give the file  Separate the items saved with commas Each entry should be on a separate line in the text file Ask the user if they have more items to enter Once the user has finished entering items Close the file with the items entered Display the sales total If the sales total is more than $100 Calculate and display a 10% discount Calculate and display the sales tax using 8% as the sales tax rate The sales tax should be calculated on the sales total after the discount Display the total for the sales receipt

Files Class Activity Write a program to write your first name (hard coded) to the screen and possibly to a file whose name is passed into the program from the command line. It can be written in upper or lower case or mixed case as the default. Usage: writer [-f filename] If the -f option is included with a filename, then create a file with that name or overwrite a previously existing file and write your name in on the first line. If the -f option is not included, then only write your name to the screen followed by a newline. Use a copy of the original getopt to parse the command line. Be sure to test whether a file open succeeds or not and close any file you open when done.

Q1: Write a python code to read data from a file "file1.txt" and then write the data to another "file "file2.txt 4:30

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

how to do?

Python

PYTHON PROGRAMMING ONLY PLEASE (PLEASE INCLUDE INPUT VALIDATIONS IF NECESSARY)    Write a program that writes a series of random numbers to a file. Each random numbershould be in the range of 1 through 500. The application should let the user specify howmany random numbers the file will hold