C++ forbids declaration...

[leandrogs]

Hello everyone! I am developing this modeling software that user can choose two diferent types of model to fill the parameters and run. The problem is this, i have to instantiate two objects (two diferent models) but Qt insists generate the message error "ISO C++ forbids declaration of 'Coupled' with no type". I have already searched about this and i didn't found anything helpful. Part of my code is that shown below.

dengueme.h:
@#ifndef DENGUEME_H
#define DENGUEME_H

#include <QMainWindow>
#include <QtGui>
#include <QtCore>

#include "integrated.h"
#include "coupled.h"

namespace Ui {
class DengueME;
}

//class Coupled; --> i have tried this without success
//class Integrated; --> i have tried this without success

class DengueME : public QMainWindow
{
Q_OBJECT

public:
explicit DengueME(QWidget *parent = 0);
~DengueME();

public slots:
void loadCoupled();
void loadIntegrated();
void workspace();
void runModel();

private:
Ui::DengueME *ui;
QFileSystemModel *dirmodel;

Integrated *i;
Coupled *c;     // HERE IS MY PROBLEM 

int model;

};

#endif // DENGUEME_H
@

dengueme.cpp:
@#include "dengueme.h"
#include "ui_dengueme.h"

#include "coupled.h"
#include "integrated.h"

DengueME::DengueME(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::DengueME)
{
ui->setupUi(this);

connect(this->ui->actionCoupled_Model, SIGNAL(triggered()), this, SLOT(loadCoupled()));
connect(this->ui->actionIntegrated_Model, SIGNAL(triggered()), this, SLOT(loadIntegrated()));
connect(this->ui->pushButton_run, SIGNAL(clicked()), this, SLOT(runModel()));

workspace();

}

DengueME::~DengueME()
{
delete ui;
}

void DengueME::workspace()
{
dirmodel = new QFileSystemModel(this);

QStringList filters;
filters << "*.lua";
dirmodel->setNameFilters(filters);

this->ui->treeView->setModel(dirmodel);
this->ui->treeView->setColumnHidden(1, true);
this->ui->treeView->setColumnHidden(2, true);
this->ui->treeView->setColumnHidden(3, true);

this->ui->treeView->setRootIndex(
            dirmodel->setRootPath(
                QFileInfo(QCoreApplication::applicationFilePath()).filePath()
                )
            );

}

void DengueME::loadCoupled()
{
this->c = new Coupled();
this->ui->scrollArea->setWidget(c);

model = 0;

}

void DengueME::loadIntegrated()
{
this->i = new Integrated();
this->ui->scrollArea->setWidget(i);

model = 1;

}

void DengueME::runModel()
{
if(model == 0){
this->ui->textBrowser_output->setText("Processing data...\n");
// this->ui->textBrowser_output->setText(this->c->executeModel());
} else if(model == 1) {
this->ui->textBrowser_output->setText("Processing data...\n");
this->ui->textBrowser_output->setText(this->i->executeModel());
}
}
@

coupled.h:
@#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QtGui>

namespace Ui {
class Coupled;
}

class Coupled : public QWidget
{
Q_OBJECT

public:
explicit Coupled(QWidget *parent = 0);
~Coupled();

public slots:
// (...)

private:
Ui::Coupled *ui;
};

#endif // WIDGET_H
@

integrated.h:
@#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QtGui>

namespace Ui {
class Integrated;
}

class Integrated : public QWidget
{
Q_OBJECT

public:
explicit Integrated(QWidget *parent = 0);
~Integrated();

public slots:
// (...)

private:
Ui::Integrated *ui;
};

#endif // WIDGET_H
@

Anyone have any idea about what should i do?

Ps 1: I'm sorry about my english;
Ps 2: Sorry if this topic looks like any other (i swear, i searched this A LOT!).

[alexisdm]

The include guards have to be unique for each header file:
@#ifndef WIDGET_H
#define WIDGET_H@

should be changed to something like:
@#ifndef INTEGRATED_H
#define INTEGRATED_H@

in integrated.h.

[MuldeR]

With modern compilers you should also be able to use a simple #prgame once instead of guards...

http://en.wikipedia.org/wiki/Pragma_once

[utcenter]

Old habits die hard.