Rental Movie Program

[ryan198913]

Hi, I am a student at a university in the Philippines and I wonder if you guys could help me with a problem that I cannot solve. I'm kind of weak in the algorithm. And I really want to improve it. I hope you guys can help me. This is the problem

Create a MovieList Class with the following components:
Movie Code
Movie Title
Movie Genre
Year Released

The program requires the following menu and processes:
There will be 5 Movie Information on the Linked List.
This will be done in the constructor.
Insert a New Movie (insert operation)
Rent a Movie (delete operation)
Return a Movie (append operation)
Show Movie Details (traversal operation with match Movie Code)
Print Movie List (traversal operation)
Quit the Program (destructor)

I hope anyone can help me

[dev7060]

The given context states the blueprint clearly. What have you done so far? Where are you stuck at?

[ryan198913]

#include <iostream>
#include <cstdlib>
#include <string>
 
using namespace std;
 
//implementation
 
class FloatList
    {
       private:
           struct ListNode
           {
               string name;
               string genre;
               int code;
               int year;
               struct ListNode *next;
           };
           ListNode *head;
       public:
           FloatList();
           ~FloatList();
           void appendNode(string name,
               string genre,
               int code,
               int year);
           void insertNode(string name,
               string genre,
               int code,
               int year);
           void deleteNode(string name,
               string genre,
               int code,
               int year);
           void displayList();
    };
 
// FUNCTIONS
 
FloatList::FloatList()
{
    head = NULL;
}
 
 
FloatList::~FloatList()
{
    ListNode *nodePtr, *nextNode;
 
    nodePtr = head;
    while (nodePtr != NULL)
    {
        nextNode = nodePtr->next;
        delete nodePtr;
        nodePtr = nextNode;
    }
    cout << "Linked List has been destroyed!" << endl;
}
 
void FloatList::appendNode(string Name, string Genre, int Code, int Year)
{
    ListNode *newNode, *nodePtr;
    // Allocate a new node & store num
    newNode = new ListNode;
    newNode->name = Name;
    newNode->next = NULL;
    newNode->genre = Genre;
    newNode->next = NULL;
    newNode->code = Code;
    newNode->next = NULL;
    newNode->year = Year;
    newNode->next = NULL;
 
    // If there are no nodes in the list
    // make newNode the first node
    if (!head)
        head = newNode;
    else    // Otherwise, insert newNode at end
    {
        // Initialize nodePtr to head of list
        nodePtr = head;
        // Find the last node in the list
        while (nodePtr->next)
            nodePtr = nodePtr->next;
        // Insert newNode as the last node
        nodePtr->next = newNode;
    }
    cout << endl << "Input has been successfully Appended!" << endl;
}
 
 
void FloatList::insertNode(string Name, string Genre, int Code, int Year)
{
    ListNode *newNode, *nodePtr, *previousNode;
 
    // Allocate a new node & store Num
    newNode = new ListNode;
    newNode->name = Name;
    newNode->genre = Genre;
    newNode->code = Code;
    newNode->year = Year;
 
    // If there are no nodes in the list
    // make newNode the first node
    if (!head)
    {
        head = newNode;
        newNode->next = NULL;
    }
    else    // Otherwise, insert newNode.
    {
        // Initialize nodePtr to head of list
        nodePtr = head;
        previousNode = NULL;
 
        // Skip all nodes whose value member is less
        // than num.
        while (nodePtr != NULL && nodePtr->name < Name)
        {
            previousNode = nodePtr;
            nodePtr = nodePtr->next;
        }
        // If the new mode is to be the 1st in the list,
            // insert it before all other nodes.
        if (previousNode == NULL)
        {
            head = newNode;
            newNode->next = nodePtr;
        }
        else
        {
            previousNode->next = newNode;
            newNode->next = nodePtr;
        }
    }
    cout << endl << "Input has been successfully Inserted!" << endl;
}
 
 
void FloatList::displayList()
{
    ListNode *nodePtr;
    if (head == NULL)
        cout << "The list is empty!" << endl;
    else
    {
        cout << "The nodes in the List are... " << endl;
        nodePtr = head;
        while (nodePtr)
        {
            cout << nodePtr->name << endl;
            cout << nodePtr->genre << endl;
            cout << nodePtr->code << endl;
            cout << nodePtr->year << endl;
            nodePtr = nodePtr->next;
            cout<< endl;
        }
    }
}
 
int menu();
int main()
{
    FloatList list;
 
    string name;
    string genre;
    int code;
    int year;
 
    int ch;
 
    do
    {
        ch = menu();
        //system("clear");
        if (ch == 1)
        {
            cout << " << Appending a Node >> " << endl << endl;
            cout << "Enter Movie Name: " << endl;
            getline(cin, name);        
            cout << "Enter Movie Name: " << endl;
                getline(cin, genre);
            cout << "Enter Movie Name: " << endl;
            cin >> code;
            cout << "Enter Movie Name: " << endl;
            cin >> year;
            list.insertNode(name, genre, code, year);
        }
        else if (ch == 2)
        {
            cout << " << Type Movie Information >> " << endl << endl;
            cout << "Enter Movie Name, Genre, Code, Year" << endl;
            cin >> name >> genre >> code >> year;
            list.insertNode(name, genre, code, year);
        }
        else if (ch == 3)
        {
            cout << " << Traversing the List >> " << endl << endl;
            list.displayList();
      system("pause");
        }
        else if (ch == 4)
        {
            cout << "Thank you for using the program!" << endl; 
            list.~FloatList();
            exit(0);
        }
        else
        {
            cout << "Invalid Input!" << endl << endl;
            break;
        }
        cout << endl;
    } while (ch >= 1 && ch <= 3);
}
 
//Main
 
int menu()
{
    int ch;
 
    system("cls");
 
    cout << " << Linked List Demonstration >> " << endl << endl;
    cout << "[1] Append a Node" << endl;
    cout << "[2] Inserting a Node" << endl;
    cout << "[3] Deleting a Node" << endl;
    cout << "[4] Traversing the List" << endl;
    cout << "[5] Quit the Program" << endl << endl;
    cout << "Enter Choice: ";
    cin >> ch;
    cout<< endl;
    return(ch);
}

Whenever I tried to get title and genre with SPACE it automatically says that the "Input is a invalid" and "The list has been destroyed".

[dev7060]

Whenever I tried to get title and genre with SPACE it automatically says that the "Input is a invalid" and "The list has been destroyed".

Does the title or genre have spaces in them?
Assuming the choice is 2,

cin >> name >> genre >> code >> year;

cin skips the leading white spaces -> starts reading when it finds the first non-whitespace character -> skips the leading white spaces ...

Example input: Avengers: Age of Ultron Action/Sci-fi 1001 2015

name = Avengers:
genre = Age
code = of
year = Ultron

Use if(!cin) to check the "didn't work" state.

[Banfa]

I assume you get different responses for options 1 and 2; you have coded them very differently and I image option 1 works and option 2 doesn't. However they do the same thing, more or less, including option 1 calling insertNode when I suspect it should be calling appendNode.