void MainWindow::on_pushButton_clicked()
{

  srand(time(NULL));

    int a=rand()%100;
    int b=rand()%100;
    int d=rand()%200;
    int e=rand()%200;

    int c=(rand()%5);
    if (c>=4)
    {
      ui->pushButton->move(a,b);
      ui->pushButton_2->move(d,e);
    }
    else
    {
      ui->pushButton_2->move(400,400);
      ui->pushButton->move(a,b);
    }
}

void MainWindow::on_pushButton_2_clicked()
{
  ui->label->move(100,100);
}