Question

Objectives: The main objective of this assignment is checking students’ ability to implement membership functions. After completing this assignment, students will be able to:

 implement member functions

 convert a member function into a standalone function

 convert a standalone function into a member function

 call member functions

 implement constructors

 use structs for function overloading

Problem description: In this assignment, we will revisit Assignment #1. Mary has now created a small commercial library and has managed to collect sales data. She wants to be able to print the books based on sales, and the list of authors based on their date of birth. This assignment needs the structs Book, Author, Date, and Library.

Processing inventory: She wants to display the books by popularity, thus the program must print the books based on sales, from highest to lowest. You will need to save the output into a text file named OrderedBooks.txt. Utilize the Book struct to implement the desired functionality.

Similarly, Mary is interested in displaying the authors by age, printing the oldest authors first. An output filed OrderedAuthors.txt should be created. Appropriate operations must be implemented inside the Author struct, and properly use the Data struct to compare author ages.

Finally, utilize the Library struct to store the lists of authors and books, and contain the functionality that the librarian requires.

You must use both member functions and non-member functions. One of the Book or Author sorting mechanisms must be implemented via member function (you can choose which) and the other with a non-member function.

You must use constructors to initialize all data variables in structs with default values at the beginning of the program. Use of global variables will incur a deduction of 10 points from your total points.

Assg1 code

#include <iostream>
#include <fstream>
#include <iomanip>
#include <string>
#include <stdlib.h>

using namespace std;


struct Date
{
    int month;
    int day;
    int year;
};
struct Author
{
    string name;
    Date birth;
    string notable_work;
    string nationality;
};

struct Book
{
    string title;
    string author;
    int release_year;
    string language;
    string genre;
};

void Menu();
void ReadBooks(ifstream& inFile, Book *books, int nun_books);
void ReadAuthors(ifstream& inFile, Author *authors, int num_authors);
void PrintBooks(Book *books, int size);
void PrintAuthors(Author *authors, int size);
void FindMatches(Book *books, Author *authors, int book_size, int author_size);
string RemoveUnderScore(string word);

int main()
{
    Menu();
    return 0;
}

void Menu()
{
    ifstream inAuthors;
    ifstream inBooks;
    int input;

    redo:
    cout<<endl<<endl;
    cout<<setw(20)<<"1.   Print Books"<<endl;
    cout<<setw(22)<<"2.   Print Authors"<<endl;
    cout<<setw(22)<<"3.   Print Matches"<<endl;
    cout<<setw(18)<<"4.   Terminate"<<endl;
    cout<<setw(20)<<"Enter Selection:";
    cin>>input;


    if(cin.fail() == true)
    {
        system("CLS");
        cout<<"Invalid Input"<<endl;
        cin.clear();
        cin.ignore(10000, '\n');
        goto redo;
    }
    else if(input == 1)
    {
        system("CLS");
        inBooks.open("Books.txt");
        int num_books;

        inBooks>>num_books;
        Book books[num_books];
        ReadBooks(inBooks, books, num_books);
        PrintBooks(books, num_books);
        inBooks.close();
    }
    else if(input == 2)
    {
        system("CLS");
        inAuthors.open("Authors.txt");

        int num_authors;
        inAuthors>>num_authors;
        Author authors[num_authors];
        ReadAuthors(inAuthors, authors, num_authors);
        PrintAuthors(authors, num_authors);
        inAuthors.close();
    }
    else if(input == 3)
    {
        system("CLS");
        inAuthors.open("Authors.txt");
        inBooks.open("Books.txt");

        int num_authors;
        inAuthors>>num_authors;
        Author authors[num_authors];
        ReadAuthors(inAuthors, authors, num_authors);

        int num_books;
        inBooks>>num_books;
        Book books[num_books];
        ReadBooks(inBooks, books,   num_books);
        FindMatches(books, authors,  num_books,  num_authors);

        inBooks.close();
        inAuthors.close();
    }
    else
        goto end;
    goto redo;
    end:
    cout<<endl<<endl;
    cout<<"Termination"<<endl;
}

void ReadBooks(ifstream& inFile, Book *books, int num_books)
{
    for(int i=0; i<num_books; i++)
    {
        inFile>>books[i].title;
        books[i].title= RemoveUnderScore(books[i].title);
        inFile>>books[i].author;
        books[i].author = RemoveUnderScore(books[i].author);
        inFile>>books[i].release_year;
        inFile>>books[i].language;
        inFile>>books[i].genre;
    }
}

void PrintBooks(Book *books, int size)
{
    cout<<setw(60)<<"Books"<<endl<<endl;
    cout<<setw(10)<<"Title"<<setw(47)<<"Author"<<setw(28)<<"Release Year"<<setw(25)<<"Language"<<setw(30)<<"Genre"<<endl<<endl;
    for(int i=0; i< size; i++)
    {
        cout<<setw(40)<<left<<books[i].title<<setw(20)<<right<<books[i].author<<right<<setw(20)<<books[i].release_year<<setw(30)<<books[i].language<<setw(35)<<books[i].genre<<endl;
    }
}

void ReadAuthors(ifstream& inFile, Author *authors, int num_authors)
{
    Date temp_date;
    string b_date;
    string temp;
    for(int i=0; i<num_authors; i++)
    {
        inFile>>authors[i].name;
        authors[i].name = RemoveUnderScore(authors[i].name);
        inFile>>b_date;
        temp= b_date.substr(0,2);
        authors[i].birth.month=atoi(temp.c_str());

        temp= b_date.substr(3,2);
        authors[i].birth.day=atoi(temp.c_str());
        temp = b_date.substr(6,4);
        authors[i].birth.year=atoi(temp.c_str());
        authors[i].nationality = "unknown";
        inFile>>authors[i].notable_work;
        authors[i].notable_work = RemoveUnderScore(authors[i].notable_work);
    }
}

void PrintAuthors(Author *authors, int size)
{
    cout<<setw(60)<<"Authors"<<endl<<endl;
    cout<<setw(10)<<"Name"<<setw(30)<<"Date of Birth"<<setw(30)<<"Notable Work"<<endl<<endl;
    for(int i=0; i< size; i++)
    {
        cout<<setw(20)<<left<<authors[i].name<<right<<setw(10)<<authors[i].birth.month<<"/"<<authors[i].birth.year<<right<<setw(35)<<authors[i].notable_work<<endl;
    }
}

void FindMatches(Book *books, Author *authors, int book_size, int author_size)
{
     cout<<setw(60)<<"Authors Matched"<<endl<<endl;
     cout<<setw(15)<<"Name"<<setw(30)<<"Nationality"<<setw(30)<<"Book"<<endl<<endl;
    for(int i=0; i<book_size; i++)
        for(int j=0; j<author_size; j++)
        {
            if(authors[j].name == books[i].author)
            {
                authors[j].nationality = books[i].language;
                cout<<setw(20)<<authors[j].name<<setw(25)<<authors[j].nationality<<setw(40)<<books[i].title<<endl;
            }
        }
}

string RemoveUnderScore(string word)
{
    for(int i=0; i<word.length(); i++)
    {
        if(word[i]=='_')
            word[i]=' ';
    }
    return word;
}

Books.txt

11
The_Name_of_the_Rose Umberto_Eco 1983 Italian Mystery   12000
Norwegian_Wood Haruki_Murakami 2000 Japanese Fiction    6000
The_Name_of_the_Wind Patrick_Rothfuss 2007 English Fantasy      4920
The_Girl_with_the_Dragon_Tattoo Stieg_Larsson 2005 Swedish Thriller     7049
The_Brothers_Karamazov Fyodor_Dostoevsky 1880 Russian Fiction   6948
Demonic_Males Richard_Wrangham 1997 English Non-Fiction 1209
War_and_Peace Leo_Tolstoy 1899 Russian Historical-Fiction       5890
Baudolino Umberto_Eco 2000 Italian Historical-Fiction   2134
The_Lies_of_Locke_Lamora Scott_Lynch 2006 English Fantasy       6676
The_Last_of_the_Wine Mary_Renault 1956 English Historical-Fiction       579
Brave_New_World Aldous_Huxley 1932 English Science-Fiction      4677

Authors.txt

7
Haruki_Murakami 01/12/1949 A_Wild_Sheep_Chase
Leo_Tolstoy 09/09/1828 War_and_Peace
Fyodor_Dostoevsky 11/11/1821 Crime_and_Punishment
Nikos_Kazantzakis 02/18/1883 The_Last_Temptation
Charles_Bukowski 08/16/1929 Post_Office
George_Orwell 06/25/1903 1984
John_Milton 12/09/1608 Paradise_Lost

Answer 1

ANSWER:

Objectives: The main objective of this assignment is checking students’ ability to implement membership functions. After completing this assignment, students will be able to:

PROGRAM:

#include <iostream>

#include <fstream>

#include <iomanip>

#include <algorithm>

using namespace std;

struct Date{

int day;

int month;

int year;

};

struct Dimension{

double width;

double height;

double depth;

};

struct Furniture{

string name;

string color;

int inventory;

Date dateCreated;

double cost;

bool operator<(const Furniture &other) const

{

return cost < other.cost;

}

/*bool operator()(const Furniture& lhs, const Furniture& rhs) const { lhs.cost < rhs.cost; }

*/

};

struct Art{

string name;

double cost;

int inventory;

Date dateCreated;

Dimension artSize;

bool operator<(const Art &other) const

{

return cost < other.cost;

}

};

struct Fabric{

string name;

string color;

int inventory;

double cost;

bool operator<(const Fabric &other) const

{

return cost < other.cost;

}

};

struct Book{

string name;

bool hardCover;

int numPages;

double cost;

int inventory;

Date datePublished;

bool operator<(const Book &other) const

{

return cost < other.cost;

}

};

/**

These four functions are mandatory as instructed in the Assignment

**/

void getFurnitureData(ifstream& inFile);

void getArtData(ifstream& inFile);

void getFabricData(ifstream& inFile);

void getBookData(ifstream& inFile);

/**

Optional Helper Functions

**/

void displayFurniture(Furniture furniture[], int totalFurniture);

void displayArt(Art art[], int totalArt);

void displayFabric(Fabric fabric[], int totalFabric);

void displayBook(Book book[], int totalBook);

void printHorizontalLine( int width, char border_char);

void printHeading( string title, int width );

int main()

{

cout << "This is Assignment 1 (Structs) - Home Decoration Store" << endl;

/**

Declaring the input streams for each file

**/

ifstream inFileFurniture;

ifstream inFileArt;

ifstream inFileFabric;

ifstream inFileBook;

/**

Opening the files. You can either hardcode the name of the files or ask the user to give the names

**/

inFileFurniture.open("Furniture.txt");

inFileArt.open("Art.txt");

//inFileFabric.open("Fabric.txt");

//inFileBook.open("Book.txt");

/**

If the any of the file cannot be opened then the program terminates displaying

the error message

**/

if (!inFileFurniture)

{

cout << "The Furniture input file does not exist. Program terminates!" << endl;

//return 1;

}

if (!inFileArt)

{

cout << "The Art input file does not exist. Program terminates!" << endl;

return 1;

}

/*

if (!inFileFabric)

{

cout << "The Fabric input file does not exist. Program terminates!" << endl;

return 1;

}

if (!inFileBook)

{

cout << "The Book input file does not exist. Program terminates!" << endl;

return 1;

}

*/

/**

Display the prompt and do the requested action. Keep repeating the prompt until exit.

If the number entered is not an option, just repeat the prompt.

**/

int chosenOption;

do{

cout << "\n\n\nSelect which option you would like to see \n"

<< "1. Print all Furniture \n"

<< "2. Print all Art \n"

<< "3. Print all Fabric \n"

<< "4. Print all Book \n"

<< "5. Exit \n"

<< "\n"

<< "Enter Option (1-5): ";

cin >> chosenOption;

/**

Do the correct action according to the chosenOption

**/

switch(chosenOption)

{

case 1:

/**

Furniture

Function call to read data from input file. That function then calls a print Function

**/

getFurnitureData(inFileFurniture);

break;

case 2:

/**

Art

Function call to read data from input file. That function then calls a print Function

**/

getArtData(inFileArt);

break;

case 3:

/**

Fabric

Function call to read data from input file. That function then calls a print Function

**/

getFabricData(inFileFabric);

break;

case 4:

/**

Book

Function call to read data from input file. That function then calls a print Function

**/

getBookData(inFileBook);

break;

default:

break;

}

}while(chosenOption != 5);

return 0;

}

void printHorizontalLine( int width, char border_char){

cout.fill( border_char );

cout << setw( width ) << border_char << "\n";

cout.fill(' ');

}

void printHeading( string title, int width ){

//Declare Variables

int magic_width = 0;

magic_width = (width/2) - (title.length()/2) + title.length();

cout << "\n";

cout << left << setfill('=') << setw( width ) << "=" << "\n";

cout << right << setfill(' ') << setw( magic_width ) << title << "\n";

cout << right << setfill('=') << setw( width ) << "=" << endl;

//reset count

cout.clear();

cout.fill(' ');

//VOID functions do NOT return a value

}

/**

Using the input stream sent as parameter we are reading the content from the Furniture.txt and storing it in the Furniture struct array

**/

void getFurnitureData(ifstream& inFile){

int totalFurniture;

inFile >> totalFurniture;

Furniture furniture[totalFurniture];

char decimal;

for(int i = 0; i < totalFurniture; i++){

inFile >> furniture[i].name;

inFile >> furniture[i].color;

inFile >> furniture[i].inventory;

inFile >> furniture[i].dateCreated.month >> decimal >> furniture[i].dateCreated.day >> decimal >> furniture[i].dateCreated.year;

inFile >> furniture[i].cost;

}

inFile.close();

printHeading("Furniture", 60);

std::sort(furniture, furniture+totalFurniture);

displayFurniture(furniture,totalFurniture);

}

/**

Using the input stream sent as parameter we are reading the content from the fabric.txt and storing it in the fabric struct array

**/

void getFabricData(ifstream& inFile){

int totalFabric;

inFile >> totalFabric;

Fabric fabric[totalFabric];

for(int i = 0; i < totalFabric; i++){

inFile >> fabric[i].name;

inFile >> fabric[i].color;

inFile >> fabric[i].inventory;

inFile >> fabric[i].cost;

}

inFile.close();

printHeading("Fabric", 60);

std::sort(fabric, fabric+totalFabric);

displayFabric(fabric,totalFabric);

}

/**

Using the input stream sent as parameter we are reading the content from the Art.txt and storing it in the art struct array

**/

void getArtData(ifstream& inFile){

int totalArt;

inFile >> totalArt;

Art art[totalArt];

char decimal;

for(int i = 0; i < totalArt; i++){

inFile >> art[i].name;

inFile >> art[i].cost;

inFile >> art[i].inventory;

inFile >> art[i].dateCreated.month >> decimal >> art[i].dateCreated.day >> decimal >> art[i].dateCreated.year;

inFile >> art[i].artSize.width >> decimal >> art[i].artSize.height >> decimal >> art[i].artSize.depth;

}

inFile.close();

printHeading("Art", 60);

std::sort(art, art+totalArt);

displayArt(art,totalArt);

}

/**

Using the input stream sent as parameter we are reading the content from the Personnel.txt and storing it in the Book struct array

**/

void getBookData(ifstream& inFile){

int totalBook;

inFile >> totalBook;

Book book[totalBook];

char decimal;

for(int i = 0; i < totalBook; i++){

inFile >> book[i].name;

inFile >> book[i].hardCover;

inFile >> book[i].numPages;

inFile >> book[i].cost;

inFile >> book[i].inventory;

inFile >> book[i].datePublished.month >> decimal >> book[i].datePublished.day >> decimal >> book[i].datePublished.year;

}

inFile.close();

printHeading("Books", 60);

std::sort(book, book+totalBook);

displayBook(book,totalBook);

}

/**

Displaying the content from the Furniture struct array on the monitor

**/

void displayFurniture(Furniture furniture[], int totalFurniture){

cout << setw(10) << "Name" << " | "

<< "Color" << " | "

<< "Inventory" << " | "

<< "Date Created" << " | "

<< "Cost" << endl;

printHorizontalLine(80,'-');

for(int i = 0; i < totalFurniture; i++){

cout << left << setw(13) << furniture[i].name << " | "

<< right << setw(6) << setfill(' ') << furniture[i].color << " | "

<< right << setw(6) << setfill(' ') << furniture[i].inventory << " | "

<< right <<setw(2) << setfill('0') << furniture[i].dateCreated.month <<":" << setw(2) << setfill('0') << furniture[i].dateCreated.day <<":" << setw(2) << setfill('0') << furniture[i].dateCreated.year << " | "

<< right <<setw(9) << setfill(' ') << furniture[i].cost << " "

<< setfill(' ') << endl;

}

}

/**

Displaying the content from the Fabric struct array on the monitor

**/

void displayFabric(Fabric fabric[], int totalFabric){

cout << setw(15) << "Name" << " | "

<< "Color" << " | "

<< "Inventory" << " | "

<< "Cost" << endl;

printHorizontalLine(80,'-');

for(int i = 0; i < totalFabric; i++){

cout << left << setw(15) << setfill(' ') << fabric[i].name << " | "

<< right << setw(5) << setfill(' ') << fabric[i].color << " | "

<< right << setw(5) << setfill(' ') << fabric[i].inventory << " | "

<< right << setw(3) << setfill(' ') << fabric[i].cost << " "

<< setfill(' ') << endl;

}

}

/**

Displaying the content from the Art struct array on the monitor

**/

void displayArt(Art art[], int totalArt){

cout << setw(18) << "Name" << " | "

<< " Cost" << " | "

<< "Inventory" << " | "

<< "Date Created" << " | "

<< "Art Dimensions" << endl;

printHorizontalLine(80,'-');

for(int i = 0; i < totalArt; i++){

cout << left << setw(18) << art[i].name << " | "

<< right << setw(5) << art[i].cost << " | "

<< right << setw(4) << setfill(' ') << art[i].inventory << " | "

<< right << setw(2) << setfill('0') << art[i].dateCreated.month <<":" << setw(2) << setfill('0') << art[i].dateCreated.day <<":" << setw(2) << setfill('0') << art[i].dateCreated.year << " | "

<< right << setw(2) << setfill('0') << art[i].artSize.width <<":" << setw(2) << setfill('0') << art[i].artSize.height <<":" << setw(2) << setfill('0') << art[i].artSize.depth << " | "

<< setfill(' ') << endl;

}

}

/**

Displaying the content from the Personnel struct array on the monitor

**/

void displayBook(Book book[], int totalBook){

cout << setw(25) << "Name" << " | "

<< "Is Hardcover" << " | "

<< "Number Pages" << " | "

<< "Cost" << " | "

<< "Inventory" << " | "

<< "Date Published" << endl;

printHorizontalLine(80,'-');

for(int i = 0; i < totalBook; i++){

cout << left << setw(25) << book[i].name << " | "

<< right << setw(7) << setfill(' ') << book[i].hardCover << " | "

<< right << setw(9) << setfill(' ') << book[i].numPages << " | "

<< right << setw(9) << setfill(' ') << book[i].cost << " | "

<< right << setw(9) << setfill(' ') << book[i].inventory << " | "

<< right << setw(2) << setfill('0') << book[i].datePublished.month <<":" << setw(2) << setfill('0') << book[i].datePublished.day <<":" << setw(2) << setfill('0') << book[i].datePublished.year << " | "

<< setfill(' ') << endl;

}

}

OUTPUT