//check filetype of output file
    //
    //      object of Salaries class
    //
    $data = new Salaries();
    $data->baseSalary();
    //set base salaries dates
    $data->bonusSalary();
    //set bonus salaries dates
    $data->monthNames();
    //set months names
    $write = new WriteFile();
    //object of WriteFile class
    //
    //      setting all parameters in WriteFile class
    //
    $write->setPath($argv[1]);
    $write->setMonths($data->getMonths());
    $write->setBase($data->getBaseSalary());
    $write->setBonus($data->getBonusSalary());
    $write->writeAll();
    //write all datas to output file
} else {
    if ($argc > 2) {
        //if user enter 2 or more arguments
        die("Too many arguments!");
    } else {
        //if user not enter any arguments
        die("You don't enter file!");
    }
}