const int BUTTON_PIN = 11;
const int LED_PIN    = 12;

int ledState = LOW;
int buttonState;
int lastButtonState = LOW;

void setup() {
  pinMode(BUTTON_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  buttonState = digitalRead(BUTTON_PIN);

  // Check if the button is pressed (HIGH)
  // and check if it was unpressed (LOW)
  if (buttonState == HIGH && lastButtonState == LOW) {
    
    // Toggle the LED state
    ledState = !ledState;
    
    // Apply the new state to the LED
    digitalWrite(LED_PIN, ledState);
    
    delay(50); 
  }

  // Save the current state for the next loop
  lastButtonState = buttonState;
}