Question

C++ Assignment

1) Write a C++ program specified below:

a) Include a class called Movie. Include the following attributes with appropriate types:

i. Title

ii. Director

iii. Release Year

iv. Rating (“G”, “PG”, “PG-13”, etc)

- Write code that instantiates a movie object using value semantics as text:

- Write code that instantiates a movie object using reference semantics:

- Write the print_movie method code:

- Write Constructor code:

- Write Entire Movie class declaration

Answer 1

We first define the class attributes(Title, director, etc) in the private part of the class. You can also define it in public section but it's a good practice to keep our attributes in private. Next, in our public section, we define 2 class constructors. The first one is a parameterised constructor in which we pass values of each attribute. The second is a Copy Constructor in which a reference of the object of the Movie class is passed to the constructor. After that, we define the print function which just prints the class attributes. In the main function we can see how to initialise the objects using different constructors.

Source Code:

#include <iostream>
using namespace std;

// Class Definition
class Movie {
   // Data members of class defined in private section
   string Title;
   string Director;
   int ReleaseYear;
   string Rating;

public:
   // Parameterised constructor for the class
   Movie(string title, string director, int releaseYear, string rating) {
       cout << "Parameterised Constructor Called!" << endl;
       Title = title;
       Director = director;
       ReleaseYear = releaseYear;
       Rating = rating;
   }

   // Copy Constructor of the class
   Movie(Movie &obj) {
       cout << "Copy Constructor Called!" << endl;
       Title = obj.Title;
       Director = obj.Director;
       ReleaseYear = obj.ReleaseYear;
       Rating = obj.Rating;
   }

   // Method that prints the data of the object
   void print_movie() {
       cout << "Title: " << Title << endl;
       cout << "Director: " << Director << endl;
       cout << "Release Year " << ReleaseYear << endl;
       cout << "Rating: " << Rating << endl;
   }
};

int main() {
   // Creating our first object using value sematics
   Movie movie1("Avengers", "Russo Brothers", 2019, "PG-13");  
   // Printing the values of our object
   movie1.print_movie();
  
   cout << "==========" << endl;

   // Creating the second object. Here the copy constructor is called
   Movie movie2 = movie1;
   // Printing its data
   movie2.print_movie();
   return 0;
}