How to use random function? Please Help

Projects Programming
8

adwsystems:
The continuous call to the lcd.clear() is causing the issue.

What you need to do is only check if the button is high or low when the button changes.

if (last_buttonState != buttonState)

{
last_buttonState = buttonState;

if (buttonState == HIGH)
{
  lcd.clear();
  lcd.print("Press button to get a random phrase.");
}
else if (buttonState == LOW) {

byte index = random(0, 4);  //get a number between 0 and 4
  lcd.setCursor(0, 0);
  lcd.clear();
  lcd.print(phrases[index]); //use it as the index to the array of phrases
}

}




get it?

Hi , thanks for your reply, I get the concept clearly, but I didn't get the code.

I replaced the void loop and I get this follwing error...

'last_buttonState' was not declared in this scope

What am I doing wrong ?

Thanks..