Write a CPP program that reads 1eis names and items prices of 50 items from KB and stores them in a file (prices.txt) line-by-line. After that, the program reads the previous file and writes the items that are priced over $100 in a separate file (prices_100.txt).

Write a CPP program that reads 1eis names and items prices of 50 items from KB and stores them in a file (prices.txt) line-by-line. After that, the program reads the previous file and writes the items that are priced over $100 in a separate file (prices_100.txt).

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Write a program that uses an initially empty file to store a sorted list of integers entered by the user. Theintegers are stored in binary form. Each time the program is run, it opens the file and outputs the list of storedintegers onto the screen. The program then asks the user to enter a new integer X. The program then looks at theinteger at the end of the file. If that integer is less than or equal to X, the program stores X at the end of the fileand closes the file. Otherwise, the program starts at the end of the file and works toward the beginning, movingeach value in the file that is greater than X up by one until it reaches the position in the file where X should bestored. The program then writes X at that position and closes the file.
Using the Seek() Method in C#In the next steps, you use the Seek() method to reposition a file pointer so you canaccess a file from any location. The user will be prompted to enter a number representinga starting point to list the names in the Names.txt file. Names from that pointforward will be listed, and then the user will be prompted for another selection.1. Start a new program named AccessSomeNames that demonstrates howto access requested names from the Names.txt file you created in theCreateNameFile application.Searching a Sequential Text File using System;using static System.Console;using System.IO;class AccessSomeNames{static void Main(){FileStream file = new FileStream("Names.txt",FileMode.Open, FileAccess.Read);StreamReader reader = new StreamReader(file);
Assume that you have two files given : answer.txt and key.txt files. answer.txt file includes student number (int) and the answers of the student. key.txt file includes the answer key for 100 questions. Write a complete C program that reads the exam answers of the student from the file answer.txt, and then compare these answers with the correct answers in key.txt. Finally display the number of correct answers for the student.
Write a program in C++ that will let the user create a text file name NameRecord.txt and allow the user to input 5 name and 5 age in the file. The program will display the names listed in a file having the age correspond to the input of the user. Example. Enter name and age: Kim 25 Enter name and age: Jose 27 Enter name and age: John 25 Enter name and age: Anna 35 Enter name and age: Luis 29 Enter age to search: 25 OUTPUT: The following have age 25 Kim John *Using Iostream * With Screenshot
The Payroll Department keeps a list of employee information for each pay period in a text file. The format of each line of the file is the following: <last name> <hours worked> <hourly wage> Write a program that inputs a filename from the user and prints to the terminal a report of the wages paid to the employees for the given period. The report should be in tabular format with the appropriate header. Each line should contain: An employee’s name The hours worked The wages paid for that period. An example of the program input and output is shown below:
Java Your program must read a file called personin.txt. Each line of the file will be a person's name, the time they arrived at the professor's office, and the amount of time they want to meet with the professor. These entries will be sorted by the time the person arrived. Your program must then print out a schedule for the day, printing each person's arrival, and printing when each person goes in to meet with the professor. You need to print the events in order of the time they happen. In other words, your output will be sorted by the arrival times and the times the person goes into the professor's office. In your output you need to print out a schedule. In the schedule, new students go to the end of the line. Whenever the professor is free, the professor will either meet with the first person in line, or meet with the first person in line if nobody is waiting. Assume no two people arrive at the same time. You should solve this problem using a stack and a queue. You can only…
Suppose you are given a text file that contains the names of people. Every name in the file consists of a first name and last name. Unfortunately, the programmer that created the file of names did not guarantee that each name was on a single line of the file. Read this file of names and write them to a new text file sorted according to first name, one name per line. For example, if the input file contains Ed Marston Bob Jones Jeff Williams Fred Charles The output file should be Bob Jones Ed Marston Fred Charles Jeff Williams Use arrays to solve the problem.
Q4. Write an algorithm of a program to read from a file. The user should be able to get the option to input the file name. He is supposed to read first 100 bytes from the file. After the reading is done, the file should be closed. If the file is not available, the program should be closed immediately. You should mention "System call" beside each instruction which are supposed to use a system call function. *
Exercise 2: Write a Python program that reads from each line of an input file called grades.txt, a student id followed by the student grades in 3 exams. The program will then calculate the average of the student and save in a file called results.txt the student id followed by the calculated average. For example, if the grades.txt contains S111 60 60 90 S222 89.5 90 89 S333 42 50 43 The file results.txt will contain S111: 70.00 S222: 89.50 S333: 45.00
Exercise 4: Write a python program that reads from a text file whose name is provided by the user, a list of a coffee shop products ordered by a customer (a sample input file is shown below). Each line contains item name, quantity and price (in biza) per product. Compute and display the total payment amount (in riyals) for each product as well as the total bill. Your program should consider the following erroneous cases: • The file does not open/exist • The format of the data in the file is incorrect (e.g. quantity = "!" or price "8&0"), in which case RuntimeError exception should be raised and the processing stops. Note: Make sure you close any open file even if an error occurs. Enter filename: order1.txt Product Qty Payment Expresso:2 1200 Turkish coffee:3 1250 2.40 3.75 Expresso Turkish coffee File contents invalid. invalid literal for int() with base 10: '880' Shish tawook:2 8&0 Coca cola:! 1300 3 Water 1/2L: 100 Total: 6.15 Sample input file Sample output
Python
Write a program that uses a sentinel loop (use ‘X’ as the sentinel value) and a dictionary that allows a user to input names and email addresses that are stored in a dictionary as key-value pairs. The program should then use a second sentinel loop to allow the user to look up a person’s email address until ‘X’ is entered. The program should pickle the dictionary and save it to a file when the user exits the program. Each time the program starts, it should retrieve the dictionary from the file and unpickle it. Please use Python