Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- //main.cpp #include "Person.h"#include "Seller.h"#include "Powerseller.h"#include <iostream>#include <list>#include <fstream>#include <string> using namespace std; void printMenu();void printSellers(list<Seller*> sellers);void checkSeller(list<Seller*> sellers);void addSeller(list<Seller*> sellers);void deleteSeller(list<Seller*> &sellers); int main() { list<Seller*> sellers; ifstream infile; infile.open("sellers.dat"); if (!infile) { cerr << "File could not be opened." << endl; exit(1); } char type; while (!infile.eof()) { infile >> type; if (type == 'S') { Seller* newseller = new Seller; newseller -> read(infile); sellers.push_back(newseller); } if (type == 'P') { Powerseller* newpowerseller = new Powerseller; newpowerseller -> read(infile); sellers.push_back(newpowerseller); } } infile.close();…arrow_forward#include#include#includeusing namespace std;// outputHtmlTitle// parameters// This function...void outputHtmlTitle(ofstream & fout, string title){fout << "" << endl;fout << "" << endl;fout << "" << endl;fout << "" << endl;fout << title << endl;fout << "" << endl;}void outputHtmlFooter(ofstream & fout){fout << "" << endl;fout << "" << endl;}void outputHtmlList(ostream & fout, string first, string second, string third){fout << "" << endl;fout << "\t" << first << "" << endl;fout << "\t" << second << "" << endl;fout << "\t" << third << "" << endl;fout << "\t" << endl;}void main(int argc, char * *argv){ofstream htmlFile("myIntro.html");string title;cout << "Please enter the title: ";getline(cin, title);outputHtmlTitle(htmlFile, title);string name;string course1, course2, course3;cout…arrow_forwardGiven the following code: #include <iostream>using namespace std; // global variablesconst int ROWS = 10, COLS = 10; int main(){ char a[ROWS][COLS] = { { ' ', ' ', ' ', ' ', 'B', 'B', ' ', ' ', ' ', ' '} , { ' ', ' ', ' ', 'B', ' ', ' ', 'B', ' ', ' ', ' '}, { ' ', ' ', 'B', ' ', ' ', ' ', ' ', 'B', ' ', ' '}, { ' ', 'B', ' ', ' ', ' ', ' ', ' ', ' ', 'B', ' '}, { 'B', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'B'}, { 'B', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'B'}, { ' ', 'B', ' ', ' ', ' ', ' ', ' ', ' ', 'B', ' '}, { ' ', ' ', 'B', ' ', ' ', ' ', ' ', 'B', ' ', ' '}, { ' ', ' ', ' ', 'B', ' ', ' ', 'B', ' ', ' ', ' '}, { ' ', ' ', ' ', ' ', 'B', 'B', ' ', ' ', ' ', ' '} }; printArray( a, ROWS, COLS ); fillInside( a, ROWS, COLS, 'x' ); // Use the first letter of your first name printArray( a, ROWS, COLS ); fillInside( a, ROWS, COLS, ' ' ); fillOutside( a, ROWS, COLS, 'y' ); // Use the first letter of your last name printArray(…arrow_forward
- please use DEQUE #include <iostream>#include <string>#include <deque> using namespace std; const int AIRPORT_COUNT = 12;string airports[AIRPORT_COUNT] = {"DAL","ABQ","DEN","MSY","HOU","SAT","CRP","MID","OKC","OMA","MDW","TUL"}; int main(){// define stack (or queue ) herestring origin;string dest;string citypair;cout << "Loading the CONTAINER ..." << endl;// LOAD THE STACK ( or queue) HERE// Create all the possible Airport combinations that could exist from the list provided.// i.e DALABQ, DALDEN, ...., ABQDAL, ABQDEN ...// DO NOT Load SameSame - DALDAL, ABQABQ, etc .. cout << "Getting data from the CONTAINER ..." << endl;// Retrieve data from the STACK/QUEUE here } Using the attached shell program (AirportCombos.cpp), create a list of strings to process and place on a STL DEQUE container. Using the provided 3 char airport codes, create a 6 character string that is the origin & destination city pair. Create all the possible…arrow_forward•is Valid Phone Number(): ReturnsTrue if the provided phone number (represented as a string) is cor-rectly formatted, otherwiseFalse. To be considered correctly formatted, phone numbers must bewritten as###-###-####, where#is a digit between 0 and 9 .•validatePhoneBook(): A phone book is a list where each entry is a phone book record (represented asa dictionary; see below for more details). This function checks each phone book record in the phonebook for correctly formatted phone numbers.A phone book record is a dictionary which initially has two keys: the key"name"mapped to thecontact’s name (string) and the key"phone number"mapped to that contact’s phone number (alsoa string).validatePhoneBook()adds a new key"valid"to the record with the valueTrueif the phonenumber is formatted correctly, otherwiseFalse. 1. Write white-box and black-box tests for the function is ValidPhoneNumber(). You should do this with-out Python, either on paper, or in a simple document. Don’t worry about…arrow_forwardAssume int[] t = {0, 1, 2, 3, 4, 5}; What is t[6]? undefined, there is an error in this code 4 6 5arrow_forward
- //below is the code I need help with answering the questions in the image// #include <stdio.h> #include <stdlib.h> struct employees { char name[20]; int ssn[9]; int yearBorn, salary; }; // function to read the employee data from the user void readEmployee(struct employees *emp) { printf("Enter name: "); gets(emp->name); printf("Enter ssn: "); for (int i = 0; i < 9; i++) scanf("%d", &emp->ssn[i]); printf("Enter birth year: "); scanf("%d", &emp->yearBorn); printf("Enter salary: "); scanf("%d", &emp->salary); } // function to create a pointer of employee type struct employees *createEmployee() { // creating the pointer struct employees *emp = malloc(sizeof(struct employees)); // function to read the data readEmployee(emp); // returning the data return emp; } // function to print the employee data to console void display(struct employees *e) { printf("%s",…arrow_forward//below is the code I need help with answering the questions in the image// #include <stdio.h> #include <stdlib.h> struct employees { char name[20]; int ssn[9]; int yearBorn, salary; }; // function to read the employee data from the user void readEmployee(struct employees *emp) { printf("Enter name: "); gets(emp->name); printf("Enter ssn: "); for (int i = 0; i < 9; i++) scanf("%d", &emp->ssn[i]); printf("Enter birth year: "); scanf("%d", &emp->yearBorn); printf("Enter salary: "); scanf("%d", &emp->salary); } // function to create a pointer of employee type struct employees *createEmployee() { // creating the pointer struct employees *emp = malloc(sizeof(struct employees)); // function to read the data readEmployee(emp); // returning the data return emp; } // function to print the employee data to console void display(struct employees *e) { printf("%s",…arrow_forwardGiven code line, std::string un_address = "405 East 42nd Street, New York, NY, 10017"; Fill in the blanks: 17 std::stoi(un_address) returns std::stoi (un_address.substr( std::stoi (un_address.substr(un_address.find("1"))) J 20)) returns 42 returnsarrow_forward
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