// adds an Opera to the set
public static void addOpera(LinkedList <Element> aList)
{
Element opera = new Opera();
opera.readIn();
int result = aList.insert(opera, 1);
// feedback on the result of the add
if (result == -2)
{
Console.WriteLine("\nThat Opera is already in the set.");
}
else if (result == 0)
{
Console.WriteLine("\nSuccessful add.");
}
else
{
Console.WriteLine("\nOut of Range");
}
}
static void Main(string[] args)
{
LinkedList <Element> theList = new LinkedList <Element>();
// present the menu for user to choose from
// and process their choice
bool terminate = false;
do
{
bool validChoice = false;
string userChoice;
do
{
Console.Write("\nWEST CHESTER FABULOUS MOVIE SOCIETY DATA MENU\n"
+ "1 - Add a Movie or an Opera\n"
+ "2 - Display the titles for all of the Movies\n"
+ "3 - Display the titles for all of the Operas\n"
+ "4 - Display the data for a particular Movie\n"
+ "5 - Display the data for a particular Opera\n"
+ "6 - Edit the data for a particular Movie or Opera\n"
+ "7 - Remove a particular Movie or Opera\n"
+ "8 - Quit the program\n");
userChoice = Console.ReadLine();
if (userChoice[0] != '1' ||
userChoice[0] != '2' ||
userChoice[0] != '3' ||
userChoice[0] != '4' ||
userChoice[0] != '5' ||
userChoice[0] != '6' ||
userChoice[0] != '7' ||
userChoice[0] != '8')
{
validChoice = true;
}
else
{
Console.WriteLine("Not a valid choice. Please try again.");
}
} while (!validChoice);
switch (userChoice[0])
{
case '1':
Console.WriteLine("\nWhich would you like to add (Movie/Opera)?");
string choice = Console.ReadLine().ToUpper();
if (choice[0] == 'M')
{
addMovie(theList);
}
else if (choice[0] == 'O')
{
addOpera(theList);
}
else
{
Console.WriteLine("\nNot a valid choice.");
}
break;
case '2':
displayMovieTitles(theList);
break;
case '3':
displayOperaTitles(theList);
break;
case '4':
Console.WriteLine("\nWhat Movie would you like to see information for?");
string title = Console.ReadLine().ToUpper();
displayMovie(theList, title);
break;
case '5':
Console.WriteLine("\nWhat Opera would you like to see information for?");
title = Console.ReadLine().ToUpper();
displayOpera(theList, title);
break;
case '6':
Console.WriteLine("\nWhich would you like to edit (Movie/Opera)?");
choice = Console.ReadLine().ToUpper();
if (choice[0] == 'M')
{
Element movie = new Movie(); // create new Movie object
movie.readIn(); // get the new information
bool result = theList.editAnObject(movie); // the object and place store the result
if (!result)
{
Console.WriteLine("\nMovie could not be edited, as that movie does not already exist.");
}
else
{
Console.WriteLine("Successful edit.");
}
}
else if (choice[0] == 'O')
{
Element opera = new Opera(); // create new Opera object
opera.readIn(); // get the new information
bool result = theList.editAnObject(opera); // the object and place store the result
if (!result)
{
Console.WriteLine("\nOpera could not be edited, as that movie does not already exist.");
}
else
{
Console.WriteLine("Successful edit.");
}
}
else
{
Console.WriteLine("\nNot a valid option.");
}
break;
case '7':
Console.WriteLine("\nWhich would you like to remove (Movie/Opera)?");
choice = Console.ReadLine().ToUpper();
if (choice[0] == 'M')
{
Movie movie = new Movie(); // create new Movie object
Console.WriteLine("\nWhat is the title of the Movie that you would like to remove?");
movie.Title = Console.ReadLine().ToUpper(); // get the new information
bool result = theList.removeAnObject(movie); // the object and place store the result
if (!result)
{
Console.WriteLine("\nMovie could not be removed, as that movie does not already exist.");
}
else
{
Console.WriteLine("Successful remove.");
}
}
else if (choice[0] == 'O')
{
Opera opera = new Opera(); // create new Opera object
Console.WriteLine("\nWhat is the title of the Opera that you would like to remove?");
opera.Title = Console.ReadLine().ToUpper(); // get the new information
bool result = theList.removeAnObject(opera); // the object and place store the result
if (!result)
{
Console.WriteLine("\nOpera could not be removed, as that movie does not already exist.");
}
else
{
Console.WriteLine("Successful remove.");
}
}
else
{
Console.WriteLine("\nNot a valid option.");
}
break;
case '8':
Console.WriteLine("\nAre you sure (Y/N)?");
string exitChoice = Console.ReadLine().ToUpper();
if (exitChoice[0] == 'Y')
{
terminate = true;
}
break;
default:
Console.WriteLine("\nNot a valid choice. Please choose again.");
break;
}
} while (!terminate);
}