How to change push button text by clicking on another push button

[mcraellehs]

I added 2 Push buttons in ui like this qtt.jpg

i added a slot for button "CLICK",

void MainWindow::on_pushButton_clicked()
{
 
}

void MainWindow::on_pushButton_clicked()
{
    
}

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when i click on this button "CLICK" i want the button's "BUTTON" text to be changed to "CLICKED".
How can i do that ?