break after x second()

please i want to know how to write a loop that will break after (for expample ) 9 second form now,
thank you very much

Do you actually want to do something in a loop for nine seconds, or do you just want the sketch to wait until nine seconds has passed before proceeding?

Studying the BlinkWithoutDelay example would be useful I think.

Here's a loop that will break after 9 seconds:

for (unsigned long starttime = millis(); millis() - starttime < 9000; ) {

}

tahnk you very much