Function not declared in scope

[DeanQt]

@void MainWindow::update_values(double seek)
{
ui->doubleSpinBox_19->setValue(seek);
}

double goal_seek (double goal, double bound_lower, double bound_upper, double seek) {
seek = (bound_upper - bound_lower) / 2;
double goalseek;
update_values(seek);
if (abs(goalseek - goal) <= 0.0001)
return seek;
else if (goalseek < goal) {
bound_lower = goalseek;
return goal_seek(goal, bound_lower, bound_upper, seek);
}
else if (goalseek > goal){
bound_upper = goalseek;
return goal_seek(goal, bound_lower, bound_upper, seek);
}
else
return -1;
}

void MainWindow::button_pushed()
{
double seek;
goal_seek(5);
update_values(seek);
}@

In the function "goal_seek", I want to call a function called update_values. However that line gives an error message saying update_values was not declared in scope.

I dont see why this is so. Above it, one may see the function declaration.

More confusing still is the fact that if I call update_values from the function button_pushed() there is no error message saying its not declared in scope.

Can anyone suggest how to take away the error message?

[dbzhang800]

Yes, as update_values() is a member of your class MainWindow, while goal_seek() is a global function.