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[on:]

I'm a beginner and don't have much "know-how" in programming. I tried to compile this code and load it onto my board, but received this error message which I didn't understand. The error is: initializer fails to determine size of 'ledPins'. It highlights the first line of the code. Any solutions? I don't know what it means by the "size" of the pins.

Code:

int ledPins[] = (2,3,4,5,6,7,8,9);

void setup()
{
  int index;
 
  for(index = 0; index <= 7; index++)
  {
    pinMode(ledPins[index], OUTPUT);
  }
}

void loop()
{
  int index;
  int delayTime = 2000;
 
  for(index = 0; index <= 7; index++)
  {
    digitalWrite(ledPins[index], HIGH);
    delay(delayTime);
  }
 
  for(index = 7; index >= 0; index--)
  {
    digitalWrite(ledPins[index], LOW);
    delay(delayTime);
  }               
}
 

[Reply #1 on:]

Arrays are initialized with curly braces, not parentheses.

[Reply #2 on:]

ohhh. thanks

[Reply #3 on:]

There's no doubt that's the problem, but I must admit I find that error message quite enigmatic.

[Reply #4 on:]

but I must admit I find that error message quite enigmatic.

The comma operator got applied to all the stuff in the parentheses. The result was not a list of initializers. How else should the message be worded?