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.