const int ledPins[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11};  // Pins for 10 LEDs
const int buttonPin = 12;  // Pin for the input button
int buttonState = 0;       // Variable for reading the button status

void setup() {
  // Set the LED pins as output
    for (int i = 0; i < 10; i++) {
        pinMode(ledPins[i], OUTPUT);
          }
            // Set the button pin as input
              pinMode(buttonPin, INPUT);
              }

              void loop() {
                // Read the state of the button (HIGH or LOW)
                  buttonState = digitalRead(buttonPin);

                    // If the button is pressed (HIGH), turn on the LEDs
                      if (buttonState == HIGH) {
                          for (int i = 0; i < 10; i++) {
                                digitalWrite(ledPins[i], HIGH);  // Turn the LED on
                                      delay(100);                      // Delay to create a sequence effect
                                          }
                                            } else { // If the button is not pressed, turn off all the LEDs
                                                for (int i = 0; i < 10; i++) {
                                                      digitalWrite(ledPins[i], LOW);   // Turn the LED off
                                                          }
                                                            }
                                                            }