Thread: Confusing Error in the beginning of my c++ code

I have completed my code and the only error is something in the beginning of the code because it says that its at line one. Can someone explain to me why this is happening? Thanks!

heres my code:

Code:

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


using namespace std;




class bookType
{
public:
    bookType();
    void setTitle (string);
    string getTitle ();
    bool compareTitle(string);


    void setAuthor(string="");
    void showAuthors();
    void updateAuthor(string="");
    string *getAuthors ();


    void setCopies (int);
    void showCopies ();
    void updateCopies(int);
    int getCopies();


    void setPublisher(string);
    void showPublisher();
    void updatePublisher(string);
    string getPublisher();


    void setISBN(string);
    void showISBN();
    void updateISBN(string);
    string getISBN();
    bool compareISBN(string);


    void setPrice(double);
    void showPrice();
    void updatePrice(double);
    double getPrice();


private:
    string title;
    string authors [4];
    string publisher;
    string ISBN;
    double price;
    int copies;
    int authorsNo;
};


#include <iostream>
#include "bookType.h"
using namespace std;


bookType::bookType()
{
    title="";
    for (int i=0; i<4; i++)
        authors[i];
    publisher="";
    ISBN="";
    price=0;
    copies=0;
    authorsNo=0;
}


void bookType::setTitle(string myTitle)
{
    title=myTitle;
}


string bookType::getTitle()
{
    return title;
}
bool bookType::compareTitle (string otherTitle)
{
    return (title.compare(otherTitle)==0);
}


void bookType::setAuthor(string myAuthor)
{
    authorsNo=authorsNo % 4;


    if(myAuthor.compare("")==0)
        return;
    else
    {
        authors [authorsNo]=myAuthor;
        authorsNo++;
    }
}


void bookType::showAuthors()
{
    for (int i=0; i< authorsNo; i++)
        cout<<authors [i]<< ", ";
    cout<<"\r\r";
}


void bookType::updateAuthor(string myAuthor)
{
    setAuthor(myAuthor);
}


string *bookType::getAuthors()
{
    return authors;
}


void bookType::setCopies(int myCopies)
{
    copies=myCopies;
}


void bookType::showCopies()
{
    cout<<"There are" <<copies<< "copies of this book.";
}


void bookType::updateCopies(int myCopies)
{
    copies=myCopies;
}


int bookType::getCopies()
{
    return copies;
}


void bookType::setPublisher(string myPublisher)
{
    publisher=myPublisher;
}


void bookType:: showPublisher()
{
    cout<<publisher;
}


void bookType::updatePublisher(string myPublisher)
{
    publisher=myPublisher;
}


string bookType::getPublisher ()
{
    return publisher;
}


void bookType::setISBN(string myISBN)
{
    ISBN=myISBN;
}


void bookType:: showISBN()
{
    cout<< ISBN;
}


void bookType::updateISBN(string myISBN)
{
    ISBN=myISBN;
}


string bookType::getISBN()
{
    return ISBN;
}


bool bookType::compareISBN(string myISBN)
{
    return(myISBN.compare(ISBN) == 0);
}


void bookType::showPrice()
{
    cout<< "The price of this book is  "<<price;
}


void bookType::updatePrice( double myPrice)
{
    price=myPrice;
}


double bookType::getPrice()
{
    return price;
}

Originally Posted by bry

I have completed my code and the only error is something in the beginning of the code because it says that its at line one.

Compiles fine for me.

The exact error message would help a lot.

Kurt

Originally Posted by ZuK

Compiles fine for me.

The exact error message would help a lot.

Kurt

i get these errors:

"Error 1 error LNK2019: unresolved external symbol "public: void __thiscall bookType::setPrice(double)" (?setPrice@bookType@@QAEXN@Z) referenced in function _main C:\Users\Bob\documents\visual studio 2010\Projects\isbn\isbn\books.obj"

"Error 2 error LNK1120: 1 unresolved externals C:\Users\Bob\documents\visual studio 2010\Projects\isbn\Debug\isbn.exe 1 1"

The error tells you that you forgot to implement
void bookType::setPrice(double);
Kurt

Originally Posted by ZuK

The error tells you that you forgot to implement
void bookType::setPrice(double);
Kurt

So how do i fix that?

Implement the method
e.g

Code:

void bookType::setPrice(double p ) {
     price = p;
}

Kurt

Thank You So Very Much!