dynamically unknown size of label array

[binary001]

Hi,

I'm a newbie for Qt C++. I want to create the QLabels Array programmatically.
It's ok. code is as follow:

#ifndef MYWIDGET_H
#define MYWIDGET_H
 
#include <QWidget>
#include <QLabel>
 
class MyWidget : public QWidget
{
    Q_OBJECT
 
public:
    MyWidget(QWidget *parent = 0);
    ~MyWidget();
 
private:
    QLabel *mylabel[5];
 
};
 
#endif // MYWIDGET_H

#ifndef MYWIDGET_H
#define MYWIDGET_H

#include <QWidget>
#include <QLabel>

class MyWidget : public QWidget
{
    Q_OBJECT

public:
    MyWidget(QWidget *parent = 0);
    ~MyWidget();

private:
    QLabel *mylabel[5];

};

#endif // MYWIDGET_H

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#include "mywidget.h"
 
#include <QLabel>
#include <QVBoxLayout>
 
MyWidget::MyWidget(QWidget *parent)
    : QWidget(parent)
{
    QVBoxLayout *layout = new QVBoxLayout;
    int i;
 
    for(i=0;i<5;i++)
    {
        mylabel[i] = new QLabel("Title: " + QString::number(i+1));
        layout->addWidget(mylabel[i]);
    }
    this->setLayout(layout);
 
}

#include "mywidget.h"

#include <QLabel>
#include <QVBoxLayout>

MyWidget::MyWidget(QWidget *parent)
    : QWidget(parent)
{
    QVBoxLayout *layout = new QVBoxLayout;
    int i;

    for(i=0;i<5;i++)
    {
        mylabel[i] = new QLabel("Title: " + QString::number(i+1));
        layout->addWidget(mylabel[i]);
    }
    this->setLayout(layout);

}

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This code created 5 label
But I want to create labels that numbers is assigned when I call class.
My Question is how to assign number of labels to create dynamically?

just example:

#include "mywidget.h"
 
int main(int argc, char *argv[])
{
    MyWidget mytitle(3); // create 3 labels
    MyWidget mysubtitle(10); // create 10 labels
 
 
    return 0;
}

#include "mywidget.h"

int main(int argc, char *argv[])
{
    MyWidget mytitle(3); // create 3 labels
    MyWidget mysubtitle(10); // create 10 labels


    return 0;
}

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Another Question is Array can resize and created programmatically.
I created it in VB just like:

dim A() as string
.....
 
ReDim A(1)
 
Dim i as Integer
i = UBound(A) + 1
ReDim Preserve A(i)

dim A() as string
.....

ReDim A(1)

Dim i as Integer
i = UBound(A) + 1
ReDim Preserve A(i)

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If yes, how to do it?

Thanks in advance.