Question

Using an object-oriented approach, write a program to read a file containing movie data (Tile, Director, Genre, Year Released, Running Time) into a vector of structures and perform the following operations:

Search for a specific title

Search for movies by a specific director

Search for movies by a specific genre

Search for movies released in a certain time period

Search for movies within a range for running time

Display the movies on the screen in a nice, easy to read format

Use the following basic implementations to start your project.

You only need to turn in MovieData.cpp main.cpp has an example of the basic layout of your program. You will need to finish it in order to test your program or you can just write your own. You don't need to turn it in.

MovieData.h has the class definition or interface. Don't change it or I won't be able to test your program.

MovieData.cpp already implements member function loadData(). You need to implement the constructor, destructor and all other member functions. This is the only file you will turn in. Add a header comment to MovieData.cpp with a brief description of the purpose of the MovieData class, your name and date.

main.cpp ___________________________________________

#include <iostream>

#include <string>

#include "MovieData.h"

using namespace std;

int menu();

int main(){

enum options { SEARCH_BY_TITLE, SEARCH_BY_DIRECTOR, SEARCH_BY_GENRE, SEARCH_BY_YEAR, SEARCH_BY_DURATION, EXIT };

ifstream inputFile;

string fileName;

cout << "Enter file name: ";

cin >> fileName;

MovieData *movieObj;

movieObj = new MovieData(fileName);

if (!movieObj->isLoaded())

{

cout << "Error openning file\n";

}

else

{

int option;

do

{

option = menu();

// Implement the switch options to test your program

switch (option)

{

case SEARCH_BY_TITLE:

break;

case SEARCH_BY_DIRECTOR:

break;

case SEARCH_BY_GENRE:

break;

case SEARCH_BY_YEAR:

break;

case SEARCH_BY_DURATION:

break;

default: cout << "Invalid option. Try again. \n";

}

} while (option != EXIT);

}

delete movieObj;

}

// You should implement this function to test your program

int menu()

{

return 0;

}

__________________________________________________________________________

MovieData.cpp_______________________________________________________

#include <iostream>

#include <sstream>

#include <algorithm>

#include "MovieData.h"

using namespace std;

MovieData::MovieData(string fileName)

{

// Implement constructor here

}

MovieData::~MovieData()

{

// Implement destructor here

}

// This function loads the movies from the file into the vector

void MovieData::loadData()

{

string line;

MovieType m; // holds one movie to be added to the vector of movies

while (getline(inputFile, line)) // reads a line from the file

{

stringstream lineStream(line); // transforms the line into a stream

// splits the string stream into individual fields separated by comma

getline(lineStream, m.title, ',');

getline(lineStream, m.director, ',');

getline(lineStream, m.genre, ',');

getline(lineStream, m.year, ',');

getline(lineStream, m.duration, ',');

moviesVector.push_back(m); // adds movie to the vector of movies

}

}

// Implement all other member functions here

____________________________________________
MovieData.h_______________________________________

#ifndef MOVIEDATA_H

#define MOVIEDATA_H

using namespace std;

#include <fstream>

#include <string>

#include <vector>

class MovieData

{

private:

struct MovieType {

string title;

string director;

string genre;

string year;

string duration;

};

vector<MovieType> moviesVector;

ifstream inputFile;

bool fileLoaded;

void loadData(); // this function is called in the constructor to load the movies from the file

void printMovie(MovieType); // this function is called by the search functions to print each movie on the screen

public:

// Constructor: opens the file passed as parameter, calls loadData to load the data from the file into the vector and sets fileLoaded to true if succeeded

MovieData(string fileName);

// Destructor: closes the file

virtual ~MovieData();

// Returns the value of the fileLoaded status variable

bool isLoaded();

// Searches for movies by title and displays them on the screen

void searchByTitle(string title);

// Searches for movies by director and displays them on the screen

void searchByDirector(string director);

// Searches for movies by genre and displays them on the screen

void searchByGenre(string genre);

// Searches for movies released between years start and end, and displays them on the screen

void searchByYear(int start, int end);

// Searches for movies with duration between min and max, and displays them on the screen

void searchByDuration(int min, int max);

};

#endif // MOVIEDATA_H

_____________________________

text file

IAvengers: Age of Ultron,Joss Whedon,science fiction,2015,120
Mean Girls,Mark Waters,comedy,2004,97
Happy Feet,George Miller,comedy,2006,108
Surf's Up,Chris Buck,advanture,2007,85
The Great Escape,John Sturges,thriller,1963,172
Superbad,Gret Mottola,comedy,2007,113
Earthlings,Shaun Monson,documentary,2005,95
Limitless,Neil Burger,Thriller,2011,105
Guardians of the Galaxy,James Gunn,fantasy,2014,120
Kung Fu Hustle,Stephen Chow,fantasy,2004,99
Whiplash,Damien Chazelle,drama,2014,106
Ghost in the Shell,Mamoru Oshii,manga,1995,82
Inglourious Basterds,Quentin Tarantino,drama,2009,120
Under the Tuscan Sun,Audrey Wells,drama,2003,113
A Thousand Words,Brian Robbins,comedy,2012,91
Interstellar,Christopher Nollan,science fiction,2014,160
Zoolander,Ben Stiller,comedy,2001,105
Captain America: The Winter Soldier,Russo,science fiction,2014,120
Chungking Express,Kai Wai Wong,drama,1994,98
The Matrix,Andy Wachowski,fantasy,1999,136
Gone Girl,David Fincher,mystery,2014,129
Saving Private Ryan,Steven Spielberg,drama,1998,120

Answer 1

#include <iostream>
#include <fstream>
#include <sstream>
#include <iomanip>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

struct Movie {
    string title;
    string director;
    string genre;
    string year;
    string duration;
};

//function prototype
void display (vector<Movie>);
bool compareByTitle(Movie const& m1, Movie const& m2);
bool compareByDirector(Movie const& m1, Movie const& m2);
bool compareByYear(Movie const& m1, Movie const& m2);
bool compareByGenre(Movie const& m1, Movie const& m2);
bool compareByDuration(Movie const& m1, Movie const& m2);

int main()
{
    //Declare variable
    ifstream inputFile;
    string line;
    int choice;

    Movie m;
    vector <Movie> movies;

    inputFile.open("Movie_entries.txt");
    while (getline(inputFile, line))   // reads a line from the file
    {
        //cout << line << endl; // prints the line on the screen
        stringstream lineStream(line);   // transforms the line into a string stream

        // get fields from the string stream to the struct fields; data is separated by comma
        getline(lineStream, m.title, ',');
        getline(lineStream, m.director, ',');
        getline(lineStream, m.genre, ',');
        getline(lineStream, m.year, ',');
        getline(lineStream, m.duration, ',');

        movies.push_back(m);

    }
    inputFile.close();

    do {
        //prompt the user input for the type of sorting
        cout << "You can sort the movies by title, director, year released, or duration." << endl;
        cout << "Please enter the corresponding number:" << endl;
        cout << "1 : to sort by title" << endl;
        cout << "2 : to sort by director" << endl;
        cout << "3 : to sort by year released" << endl;
        cout << "4 : to sort by genre" << endl;
        cout << "5 : to sort by the duration time" << endl;
        cout << "0 : to exit the program" << endl;
        cin >> choice;

        //sorting depending on users choice
        if (choice == 1)
        {
            sort(movies.begin(), movies.end(), compareByTitle);
        }
        else if (choice == 2)
        {
            sort(movies.begin(), movies.end(), compareByDirector);
        }
        else if (choice == 3)
        {
            sort(movies.begin(), movies.end(), compareByYear);
        }
        else if (choice == 4)
        {
            sort(movies.begin(), movies.end(), compareByGenre);
        }
        else if (choice == 5)
        {
            sort(movies.begin(), movies.end(), compareByDuration);
        }
        else if (choice == 0) // exit the program
        {
            cout << "Goodbye!" << endl;
            exit(1);
        }

        //Printing movie info once the sorting is done
        display(movies);

    }
    while (choice <= 5); //this will repeat until user chooses to exit

    return 0;

}//main

void display(vector<Movie> movies)
{
    /* Pre: movies - the movie lists
       Post: nothing
       Purpose: print out the header and the sorted data
     */

    //header
    cout << left<< setw(35) << "\nTitle" << left << setw(25)<< "Director" << left << setw(25)<< "Genre" << left << setw(25)<< "Year Released" << left << setw(25) << "Duration"<< endl;

    //loop through the movie list and display the data
    for (int i = 0; i < movies.size(); ++i)
    {
        cout << left<< setw(35) << movies[i].title<< left << setw(25)<< movies[i].director<< left << setw(25)<< movies[i].genre<< left << setw(25)<< movies[i].year << left << setw(25) << movies[i].duration<< endl;
    }

}//display
///////////////////////

//Comparing Functions
bool compareByTitle(Movie const& m1,Movie const& m2)
{return m1.title < m2.title;}

bool compareByDirector(Movie const& m1, Movie const& m2)
{return m1.director < m2.director;}

bool compareByYear(Movie const& m1, Movie const& m2)
{return m1.year < m2.year;}

bool compareByGenre(Movie const& m1, Movie const& m2)
{return m1.genre < m2.genre;}

bool compareByDuration(Movie const& m1, Movie const& m2)
{return m1.duration < m2.duration;}