int LED [5] = {2, 3, 4, 5, 6};
void setup() {
// put your setup code here, to run once:
for (int i=0 ; i<sizeof(LED)/sizeof(int); i=i+1){
pinMode(LED[i], OUTPUT);
}
}
void loop() {
// put your main code here, to run repeatedly:
for (int i=0 ; i<sizeof(LED)/sizeof(int); i=i+1){
digitalWrite(LED[i], HIGH);
delay (200);
digitalWrite(LED[i], LOW);
delay (200);
}
for (int i=3 ; i>0; i=i-1){
digitalWrite(LED[i], HIGH);
delay (200);
digitalWrite(LED[i], LOW);
delay (200);
}
}