Need you help, newbie here

Projects Programming
1

Dear friends of the forum,
very recently I got Arduino UNO and I have started my first "programs" very simple just to get me familiar with Arduino.
I need you help i the follows:

I have one for loop like the sample bellow

for (int x=0; x <= 5; x++){
      digitalWrite(led(x), HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(1000);               // wait for a second
      digitalWrite(led(x), LOW);    // turn the LED off by making the voltage LOW
      delay(1000);               // wait for a second
   }

What I tried there is to construct using for loop the variable led1, led2, led3... led6 but the above litle code does not work...

What I need in order to make it work?
Thanks in advance

PS I have const declaration for led like the bellow:

const int led1 = 13;
const int led2 = 12;
const int led3 = 8;
const int led4 = 7;
const int led5 = 4;
const int led6 = 2;
2

Wrong format, need [ ] for arrays:

led[] = {13,12,8,7,4,2,};// led[0] = 13, led[1] = 12,etc. led[5]= 2

digitalWrite(led[x], HIGH);

led might be a predefined keyword as well, try changing the name to ledPin if you still have errors.

3 
led(x)

This is calling a function called led(), with the value in x. Is that really reasonable in your case?

4

How about this?....

byte ledPins[] = { 13, 12, 8, 7, 4, 2};
for (int x=0; x<6; x++) {
      digitalWrite(ledPins[x], HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(1000);               // wait for a second
      digitalWrite(ledPins[x], LOW);    // turn the LED off by making the voltage LOW
      delay(1000);               // wait for a second
   }
5

Thanks a lot for your fast fine support. So I need arrays, OK I got it!

Thanks again!