writing to files from different functions

void write(ofstream& atminit)
{
    atminit << "test write:";
}


void main()
{
    ofstream atminit ("atminit.txt");
    if (! atminit.is_open())
    {
        cout << "error opening atminit.txt, press any key to  exit.....";
//        getch();
        exit (1);
    }
    else
    {
        cout << "opened atminit file ok" << endl;
        write(atminit );
    }
}