C2264 Error in C++, totally lost

[SConrad]

I cut out the code that doesn't interact with this stuff.
I'm really lost, I don't know what's going on with this stuff.

1>c:\documents and settings\sean\desktop\project1\project1\invmenu.cp p(75) : error C2664: 'BookData::SetISBN' : cannot convert parameter 1 from 'BookData' to 'std::string &'

INVMENU.H
#ifndef INVMENU_H
#define INVMENU_H
#include <iostream>
#include <string>
#include <iomanip>

#include "BookData.h"

void invmenu(BookData books[]);

#endif

------------------------------------

INVMENU.CPP

#include "BookData.h"
#include "invmenu.h"

void lookup();
void addbook();

void lookup()
{
system("cls");
string ISBN;
BookData isbn;

cout << "Serendipity Booksellers\n";
cout << "Book information";

cout << "Please enter ISBN: ";
cin.ignore();
getline(cin, ISBN);
isbn.SetISBN(isbn);
cout << &BookData::GetISBN;

// BookData::SetTitle();
// BookData::SetAuthor();
// BookData::GetPublisher();
// BookData::GetDateadd();
// BookData::GetOnhand();
// BookData::GetWholepri();
// BookData::GetRetPri();
}

---------------------------------------

#ifndef BOOKDATA_H
#define BOOKDATA_H

#include <iostream>
#include <string>
#include <iomanip>

using namespace std;

class BookData
{

private:
string title, isbn, author, publisher, dateadded;
double onhand, wholepri, retpri;

public:
string GetTitle();
void SetTitle(string& s);

string GetISBN();
void SetISBN(string& n);

string GetAuthor();
void SetAuthor(string& a);

string GetPublisher();
void SetPublisher(string& p);

string GetDateadd();
void SetDateadd(string& d);

double GetOnhand();
void SetOnhand(double& o);

double GetWholepri();
void SetWholepri(double& w);

double GetRetpri();
void SetRetpri(double r);
};

#endif

---------------------------------------------------------

//Inventory menu

#include "BookData.h"

void bookmenu()
{
cout << "Serendipity Booksellers\n";
cout << "Book Information\n";
}
//Book's Title
string BookData::GetTitle()
{
return title;
}
void BookData::SetTitle(string& s)
{
cin.ignore();
cout << "\nBook's Title: ";
getline(cin, s);
}
//Book's ISBN
string BookData::GetISBN()
{
return isbn;
}
void BookData::SetISBN(string& n)
{
isbn = n;
}

----------------------------------------------------------

I've re-read the class chapter of my book about 5 times now, and I can't figure out where I'm going wrong.

Any help would be greatly appreciated, since I've been stuck at this point for far longer than I should have been.

[imcram]

I cut out the code that doesn't interact with this stuff.
I'm really lost, I don't know what's going on with this stuff.

1>c:\documents and settings\sean\desktop\project1\project1\invmenu.cp p(75) : error C2664: 'BookData::SetISBN' : cannot convert parameter 1 from 'BookData' to 'std::string &'

INVMENU.H
#ifndef INVMENU_H
#define INVMENU_H
#include <iostream>
#include <string>
#include <iomanip>

#include "BookData.h"

void invmenu(BookData books[]);

#endif

------------------------------------

INVMENU.CPP

#include "BookData.h"
#include "invmenu.h"

void lookup();
void addbook();

void lookup()
{
system("cls");
string ISBN;
BookData isbn;

cout << "Serendipity Booksellers\n";
cout << "Book information";

cout << "Please enter ISBN: ";
cin.ignore();
getline(cin, ISBN);
isbn.SetISBN(isbn);
cout << &BookData::GetISBN;

// BookData::SetTitle();
// BookData::SetAuthor();
// BookData::GetPublisher();
// BookData::GetDateadd();
// BookData::GetOnhand();
// BookData::GetWholepri();
// BookData::GetRetPri();
}

---------------------------------------

#ifndef BOOKDATA_H
#define BOOKDATA_H

#include <iostream>
#include <string>
#include <iomanip>

using namespace std;

class BookData
{

private:
string title, isbn, author, publisher, dateadded;
double onhand, wholepri, retpri;

public:
string GetTitle();
void SetTitle(string& s);

string GetISBN();
void SetISBN(string& n);

string GetAuthor();
void SetAuthor(string& a);

string GetPublisher();
void SetPublisher(string& p);

string GetDateadd();
void SetDateadd(string& d);

double GetOnhand();
void SetOnhand(double& o);

double GetWholepri();
void SetWholepri(double& w);

double GetRetpri();
void SetRetpri(double r);
};

#endif

---------------------------------------------------------

//Inventory menu

#include "BookData.h"

void bookmenu()
{
cout << "Serendipity Booksellers\n";
cout << "Book Information\n";
}
//Book's Title
string BookData::GetTitle()
{
return title;
}
void BookData::SetTitle(string& s)
{
cin.ignore();
cout << "\nBook's Title: ";
getline(cin, s);
}
//Book's ISBN
string BookData::GetISBN()
{
return isbn;
}
void BookData::SetISBN(string& n)
{
isbn = n;
}

----------------------------------------------------------

I've re-read the class chapter of my book about 5 times now, and I can't figure out where I'm going wrong.

Any help would be greatly appreciated, since I've been stuck at this point for far longer than I should have been.

I saw a

BookData isbn;
 

somewhere, and there is a private member isbn in ur BookData class as well. U better check it.

[Ganon11]

In your main() function, you read an ISBN number (as a string) into the variable ISBN, but you also have a BookData object named isbn, which is likely causing you some confusion. When you call SetISBN, you are passing it isbn, which is the BookData object, rather than the string ISBN. You should probably pick better names for your variables.

[Coldfire]

string ISBN;
BookData isbn;

note that variables are not case-sensitive. You better change the vairable names
like
string sISBN;
BookData objISBN;