parsing file data into array of objects

[ilovelearning]

assignment is as follows:

Fred Barnes and his partner Alfred Noble are trying to drum up some business for their newly launched bookstore. They have decided to run a special on a few classic titles and now need your help to write a program that will help them monitor their progress. To accomplish this, they would like to have reports (read that as files) for the following:
1) The top 10 best selling books (sorted by descending volume). Output format:
Title Author Price Qty Sold Macbeth William Shakespeare 41.04 23
2) The top 10 revenue producing books (sorted by descending revenue). Output format:
Title Author Price Qty Sold Macbeth William Shakespeare 41.04 23
ISBN 978-88-5985-004-5
Revenue $$
3) The top 10 most expensive books (sorted by descending price). Output format:
Title Author Price ISBN
Macbeth William Shakespeare 41.04 978-88-5985-004-5
4) All the information sorted by book title in alphabetical order. Output format:
"Title","Author","Price","Qty on Hand","Qty Sold","Revenue","ISBN"
"A Christmas Carol","Charles Dickens","98.74","167","547","$$","978-26-2885-780-7"
"A Tale of Two Cities","Charles Dickens","67.00","605","740","$$","978-34-6709-227-6"
"King Solomon's Mines","Rider Haggard","82.90","211","140","$$","978-83-3553-918-2"
"Last of the Mohicans","James Fenimore Cooper","87.66","93","$$","974","978-32-6337-721-7" "Macbeth","William Shakespeare","41.04","161","23","$$","978-88-5985-004-5"
Replace the $$ with the actual revenue numbers!
You will use the Book_List.csv file provided on Blackboard as the data for this assignment.

heres what i have so far:

// function to sort and output data to a new file
//  - overloaded << operator
#include <iostream>
#include <fstream>
#include <string>
#include <streambuf>

const int MAX_CHARS_PER_LINE = 1000;
const int MAX_TOKENS_PER_LINE = 5;
const char* const DELIMITER = ",";

using namespace std;

std::fstream t("Book_List.txt");
std::string str((std::istreambuf_iterator<char>(t)),
                std::istreambuf_iterator<char>());

template<typename T>
class Counter {
public:
    Counter() { ++count; }
    Counter(const Counter&) { ++count; }
    ~Counter() { --count; }
    
    static size_t howMany()
    { return count; }
    
private:
    static size_t count;
};

template<typename T>
size_t
Counter<T>::count = 0; // this now can go in header

template<class T>
void sort(T* v,int n)
{
    for (int i = 1; i < n; i++)
        for (int j = 0; j=0, j< n-i; j++)
            if (v[j] > v[j+1])
                swap (v[j],v[j+1]);
}
template<class T>
int findLines(string)
{
    int numLines = 0;
    ifstream in("file.txt");
    //while ( ! in.eof() )
    while ( in.good() )
    {
        std::string line;
        std::getline(in, line);
        ++numLines;
    }
    return numLines;
}

class Book
{
public:
    Book();
    Book(int);
    Book(string);
	Book(long, long);
    Book(const Book&);
    Book(string, string, string, double, double, double);
    
    void setBookData(string, string, string, double, double, double);
	void setAuthor(string);
	void setTitle(string);
	void setISBN(string);
	void setQS(double);
	void setPrice(double);
	void setQOH(double);
    void getBookData(string, string, string, double, double, double);                                               // friend ostream& operator=(ifstream &, string);
    Book& operator = (const Book&);
    Book operator = (string);                       //book will cout string
	Book& operator = (ifstream &);
    friend istream& operator >> (istream &, const Book&);
    friend ostream& operator << (ostream &, const Book&);
    
    int a;
    string num;
	long end, begin;
	
private:
    string Title, Author, ISBN;
    double Price, QOH, QS;
    
};


Book :: Book()
{ }
Book :: Book(int i)
{
    a = i;
}
Book :: Book(string z) : num(z)
{ }
Book :: Book(long b, long e)
{
	b = 0;
	e = 0;
}
Book :: Book(const Book& v) : Title(v.Title), Author(v.Author), Price(v.Price), QOH(v.QOH), QS(v.QS), ISBN(v.ISBN)
{ } // copy constructor
Book :: Book(string t, string a, string isbn, double p, double qoh, double qs )
{
	Title = t;
	Author = a;
	ISBN = isbn;
	Price = p;
	QOH = qoh;
	QS = qs;
}
void Book :: setBookData(string t, string a, string isbn, double p, double qoh, double qs)
{
	Title = t;
	Author = a;
	Price = p;
	QOH = qoh;
	QS = qs;
	ISBN = isbn;
}
void Book :: getBookData(string t, string a,string isbn, double p, double qoh, double qs)
{
	t = Title;
	a = Author;
	isbn = ISBN;
	p = Price;
	qoh = QOH;
	qs = QS;
}
void Book :: setAuthor(string t)
{
	Author = t;
}
void Book :: setISBN(string i)
{
	ISBN = i;
}
void Book :: setTitle(string a)
{
	Title = a;
}
void Book :: setPrice(double p)
{
	Price = p;
}
void Book :: setQS (double q)
{
	QS = q;
}
void Book :: setQOH( double qo)
{
	QOH = qo;
}
Book& Book::operator=(const Book& v) //passed in from copy constructor
{
	if (this != &v)
	{//if they are the same object, we can skip copying of x
		//if different copy into this instance
        Title =	v.Title;
        Author = v.Author;
        Price = v.Price;
        QOH = v.QOH;
        QS = v.QS;
        ISBN = v.ISBN;
	}
	return *this; //return dereferenced instance of Fractionv to enable cascading assignment.
}
/*
 void Book operator=(ifstream& ifs, string s)
 {
 Book temp;
 temp.num = s;
 return temp;
 } */

istream& operator >> (istream &is, const Book &v)
{
	cout << "enter any number: " << endl;
    is >> v.num;
    return is;
}
ostream &operator << (ostream &os, const Book&v)
{
    os<< v.Title << v.Author << v.ISBN << v.Price << v.QOH << v.QS;
    return os;
}
int main()
{
	int num;
	long begin,end;
	begin = 0;
	end = 0;
    string bookstring;
	Book BookS[5];
    
    // create a file-reading object
    ifstream indata;
    indata.open("Book_List.csv"); // open a file
    if (!indata.good())
        return 1; // exit if file not found
    while (!indata.eof())
    {
        char buf[MAX_CHARS_PER_LINE];
        indata.getline(buf, MAX_CHARS_PER_LINE);
        int n = 0;
        const char* token[MAX_TOKENS_PER_LINE] = {0}; // initialize to 0
        // parse the line
        token[0] = strtok(buf, DELIMITER); // first token
        if (token[0]) // zero if line is blank
        {
			for (n = 1; n < MAX_TOKENS_PER_LINE; n++)
            {
                token[n] = strtok(0, DELIMITER); // subsequent tokens
                if (!token[n] || token[n]==0) break; // no more tokens
                
            }
        }
        
        // process (print) the tokens
		for (int n = 0; n < MAX_TOKENS_PER_LINE; n++) // n = #of tokens
        {
            cout << "Token[" << n << "] = " << token[n] << endl;
            cout << endl;
            
        }
        
		indata.close();
        
	}
    cin.get();
	return 0;
    
}

// function to find out how many objects to create (function find)

// create an array (of tokens) with that many objects (function create)
//  - use seekg to get to the beginning of file before starting (sort through file)

// function to read information from file into array of objects (read content into array of objects)
//  - use substr in the parsing process
//  - use atoi and atof in the parsing process

// loop to call sorting function based on 3 different criteria (3 sort criteria)
//  - sorting function will call a function template to compare values
//  - print results for each sort

// function to sort and output data to a new file
//  - overloaded << operator 

i know im a long way off, but im stuck in even how to begin parsing this bad boy. i need to create tokens for the 6 data members (Author,Title,Price,QOH,QS,Revenue) and then read in from the file "Book_List.csv" the number of lines of the file, which will tell me how many obects in the array of books i should create. Then I will instantiate the Book array and inputting values passed in from specific token values; if you can just help me to get started i could really use your help.

// function to find out how many objects to create (function find)

// create an array (of tokens) with that many objects (function create)
// - use seekg to get to the beginning of file before starting (sort through file)

// function to read information from file into array of objects (read content into array of objects)
// - use substr in the parsing process
// - use atoi and atof in the parsing process

// loop to call sorting function based on 3 different criteria (3 sort criteria)
// - sorting function will call a function template to compare values
// - print results for each sort

// function to sort and output data to a new file
// - overloaded << operator[/code]

[ilovelearning]

can someone please help me.

[Moschops]

create tokens for the 6 data members (Author,Title,Price,QOH,QS,Revenue)

string Author;
string title;
double price;
int QOH;
int QS;
double revenue;
string ISBN;

//Each line read from file as follows:

fileInput >> Author >> title >> price >> QOH >>QS >> revenue >> ISBN;

[ilovelearning]

hmm, so like this?

	string ftitle, fauthor, fisbn;
	double fprice, fqoh,fqs;
	ftitle = "Title";
	fauthor = "Author";
	fisbn = "978-88-5985-004-5";
	fprice = 41.04;
	fqoh = 161;
	fqs = 23;

	fin>>ftitle>>fauthor>>fprice>>fqoh>>fqs>>fisbn;
	Book b1,b2(ftitle,fauthor,fisbn,fqoh,fqs,fprice),b3(b2),b4;
	Book barray[50];
	for (int i =0; i<50; i++)
	{
		barray[i].setBookData(ftitle,fauthor,fisbn,fqoh,fqs,fprice);
	}

is there a way to match the tokens with my variables? Thanks.