A basic C++ question about Actions

[tonnot]

I see how works the menu system at tutorial 'recent files'.

( This is a piece of code)
at .h

enum { MaxRecentFiles = 5 };
    QAction *recentFileActs[MaxRecentFiles];

enum { MaxRecentFiles = 5 };
    QAction *recentFileActs[MaxRecentFiles];

To copy to clipboard, switch view to plain text mode 

at .cpp

recentFilesActs[0]= new QAction("a_string", this);

recentFilesActs[0]= new QAction("a_string", this);

To copy to clipboard, switch view to plain text mode 

There is not problem in having recentFileActs with 5 'reserved' QActions
But, if I didnt want to have 'reserved' space and want to create at .cpp ?
It is a basic c++ question but I dont know how to do it. It is related with 'How can I create an array of objects that have a constructor parameter'.

At h.file I want : QAction *recentFileActs[];
and at .cpp : ???? code for variable and exact value
I can't write recentFileActs = new QActions(20);


1.- Have I to create a QAction by pointer and later to pass it to recentFileActs[0] ?
2.- In that case must I to keep in mind that I have to delete the objects created?

Thanks