wrong order

[Nasty2]

to pass myFile as an argument i've got to do the follwong changes right??:

void linklist::readfile()
{
	ifstream myFile("textfile.txt");
	readnum(myFile);

	cout << "All the data has been read from the file." << '\n';
	cout << "Press Enter to continue!" << '\n';
	getch();
}

void linklist::readnum(ifstream filename)
{
    if(myFile)
    {
        int s;
        if(!myFile >> s)
	return;
        readnum();
        this->additem(s);   // Number read first will be added last
    }
    myFile.close();
}

its giving me an error in the .h file, where i got:
void readnum(ifstream filename);