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I don't know how tough can be and which is the best way.
Probably doing CLI it is a waste of time. GUI will use the same "tough" principles.
However, which is the best GUI to start with C++. QT is...

You were right. It works :)

Next step? Create a interface which enables creating objects by File I/O?
Create a CLI to user interface?
Jump to GUI? Which GUI, QT, GTK ?

It makes all sense.
However, If the Book Constructor doesn't have the price, how I can set the ComicBook Price as a Label function?

I'd like ComicBook's price set by label. ComicBook is a book with 2 more attributes. The Universe and the Creator.
At Book Class I'm able to calc price inherite the Product class.
ComicBook is a...

I think that I did it right now.
However I have another doubt. I have XComicBook class which is a Book. If I change the Book constructor how can I set the XComicBook price?
Should I change...

My only doubt is the initilialization.
I see in your examples and at web People using virtual class = 0.
And I didn't do it.




The compiler ! It won't compile.

At this case I need an abstract class.
I updated the code. I'm not sure if I created in correct way the virtual class.

I don't get how can I ride off "Price" from constructor. Do I need create...

Thanks!

I updated my code, however I've got an error in other classes:

"undefined reference to `XProduct::~XProduct()'"

Do I need to declare the virtual class in all?


#ifndef XBOOK_H

you wrote:

Base(int foo, int bar): m_foo(foo), m_bar(bar) {}

Why not?


Base(int foo, int bar): m_foo(std::move(foo)), m_bar(std::move(bar)) {}

Thank you for your time.
I've started digging into example, however I've figured it out that it didn't compile.


../derivedClasses/main.cpp:10:21: error: pure-specifier on function-definition
...

You suggest setprice at book be private. I cannot call at main. SHould I call it at cpp ?

I've changed my function to:


void XBook::setPrice(std::string Label){
if (Label == "Blue"){
m_price = 50.0;
}
}

In main:

Can I do Something like this?


#ifndef XBOOK_H
#define XBOOK_H

#include "xproduct.h"


class XBook : public XProduct

I have this Xbook class:


class XBook : public XProduct
{

protected:
int m_noPages;
std::string m_label;

Niether I.

I'm trying to understand how can I use this information. I've search in books and I didn't find how can I use at my example.

Something like:


void XProduct::XProduct(float x): XBook(etc, CalcPrice(x))

?

I think that I understood, but I don't get it out to implement it.

I have some dificulties.

I want Xbook inherite from XProduct all the useful attributes.
However, I think that I don't need to create a overload constructor to Xbook with Price, because Price in...

Book's price it is a function of labelcolor.
So, it seems to me correct price be a private attribute without setfunction (to the user), however with a mutator function to the program.

When a user...

I've updated a git : https://github.com/CreativeSoftware/LearnCppByExample

How can I can I make a book price change according to the label color?

I was thiking about user interface. Probably...

Iterators come with magic xD

Should I apply to the more complex example all of this Stuff?

Here it is another update. I hope that is what you ask for Elysia:


#include <iostream>
#include <vector>

std::vector<int> v;
// Now create code that accesses the n'th element of v.

I don't know if I'm doing something wrong when I create the project.

I think the 1st part is done, the second one not, something is missing.


#include <iostream>
#include <vector>
...

Ok, it is fine, I think that I'm too attached at i 's and j's .

Now, I'm thinking: "Ok print them all it's fine, but I want to acess a particular index? My class types doesn't have "at"...

no Problem

Elysa's initial instructions.