Part 2/3. In Visual Studio please!

HW7.cpp file

// READ BEFORE YOU START: // You are given a partially completed program that creates a list of rooms. // Each room has name, number of rooms and library type (hayden or noble). // This information is stored as an object of Room class. Class defined in room.h // The classes Hayden and Noble are child classes of the Room class. // When adding a new room, these child classes are used to make the room node of the list. // So each node in the list is actually an object of either Hayden or Noble class.

// // To begin, you should trace through the given code and understand how it works. // Please read the instructions above each required function and follow the directions carefully. // Do not modify given code.

// You can assume that all input is valid: // Valid name: String containing alphabetical letters // Valid number: a positive integer

#include #include #include #include "Container.h" #include "room.h" #include "noble.h" #include "hayden.h"

using namespace std;

// functions already implemented: void executeAction(char c); Room* searchRoom(string name_input);

// functions that need implementation: void addRoom(string name_input, int no_input, libraryType type); // 7 points void displayList(); // 4 points void save(string fileName); // 7 points void load(string fileName); // 7 points

Container* list = NULL; // global list

int main() { char c = 'i'; // initialized to a dummy value

// During first execution, there will be no list.txt in source directory. list.txt is generated by save() while exiting the program. load("list.txt"); do { cout << " CSE240 HW10 "; cout << "Please enter your selection: "; cout << "\t a: add a new room "; cout << "\t d: display room list "; cout << "\t c: change library type "; cout << "\t q: quit "; cin >> c; cin.ignore(); executeAction(c); } while (c != 'q');

save("list.txt");

list = NULL;

return 0; }

// Ask for details from user for the given selection and perform that action // Read the function case by case void executeAction(char c) { string name_input; int no_input; int type_input = 2; libraryType type; Room* roomResult = NULL;

switch (c) { case 'a': // add room // input room details from user cout << endl << "Enter room name: "; getline(cin, name_input); cout << "Enter number of rooms: "; cin >> no_input; cin.ignore();

while (!(type_input == 0 || type_input == 1)) { cout << "Enter library type: " << endl; cout << "0. Hayden " << endl; cout << "1. Noble" << endl; cin >> type_input; cin.ignore(); } type = (libraryType)type_input;

// searchRoom() will return the room object if found, else returns NULL roomResult = searchRoom(name_input); if (roomResult == NULL) { addRoom(name_input, no_input, type); cout << endl << "Room added to list!" << endl << endl; } else cout << endl << "Room already present in the list!" << endl << endl;

break;

case 'd': // display the list displayList(); break;

case 'c': // change room type cout << endl << "Enter room name: "; getline(cin, name_input); // searchRoom() will return the room node if found, else returns NULL roomResult = searchRoom(name_input); if (roomResult == NULL) { cout << endl << "Room not in list!" << endl << endl; } else { // if room exists in the list, then ask user for new number of rooms cout << endl << "Enter new library type: "<> type_input; cin.ignore(); type = (libraryType)type_input; // Q3c Call changeLibraryType() here (1 point) // 'roomResult' contains the room whose Library Type is to be changed. // Call the function with appropriate arguments.

cout << endl << "Library type changed!" << endl << endl; } break;

case 'q': // quit break;

default: cout << c << " is invalid input! "; }

}

// No implementation needed here, however it may be helpful to review this function Room* searchRoom(string name_input) {

Container* tempList = list; // work on a copy of 'list'

while (tempList != NULL) // parse till end of list { if (tempList->room->getName() == name_input) { return tempList->room; // return the room if found }

tempList = tempList->next; // parse the list }

return NULL; // return NULL if room not found in list }

// Q3b: Define Friend Function changeLibraryType() (3 points) // Define the function changeLibraryType()that is declared in room.h file. // This function sets the new library type for the room. The room object and new library type (as integer) are to be passed as function arguments. // Use 'd' display option after using 'c' option to verify. // You will need to implement add() and displayList() before you test this function.

// Q4: addRoom (7 points) // This function is used to add a new room to the global linked list 'list'. You may add the new room to head or tail of the list. (Sample solution adds to tail) // libraryType 'type' can be hayden or noble. You will need to use the function argument type to determine which constructor to use to create new room node. // For example, if the user enters type as 'noble', then you need to use Noble class and constructor to create new room node and add it to the list. // NOTE: In executeAction(), searchroom() is called before this function. Therefore no need to check here if the room exists in the list. // See how this fucntion is called in case 'a' of executeAction()

void addRoom(string name_input, int no_input, libraryType type) { Container* tempList = list; // work on a copy of 'list' }

// Q5: displayList (4 points) // This function displays the list of room and their details (name, no, library name) // Parse the list and use the class member function to display the room info. // See expected output in the question file.

void displayList() { Container *tempList = list; // work on a copy of 'list' }

// Q6: save (7 points) // Save the linked list of rooms to a file list.txt using ofstream. // You will need to save the number of rooms in linked list. That will help in load() when reading the file. // One format to store is: // // // // // // // // and so on.. // You may store the list in another format if you wish. You need to read the file in load () the same way that it is saved in save(). // This function is called when exiting the program (end of main() ). // Hint: You may want to cast the enum libraryType to an int before writing it to the file.

void save(string fileName) { }

// Q7: load (7 points) // Load the linked list of rooms from the file using ifstream. // You will need to create the linked list in the same order that is was saved to the file in save(). // First, read the number of rooms saved in the file. // Then, for every room you will need to create a new Room node depending on room type. You may add the room to head or tail of the list. // Hint: If you casted the enum 'libraryType' to an int, you will need to cast it back to 'libraryType' when making the room node. // This function is called at the beginning of main().

void load(string fileName) { }