// Define the pin numbers
const int switchPin = 2; // the number of the switch pin
const int ledPin = 5;   // the number of the LED pin

void setup() {
  // Initialize the switch pin as an input with an internal pull-up resistor
  pinMode(switchPin, INPUT_PULLUP);
  // Initialize the LED pin as an output
  pinMode(ledPin, OUTPUT);
  // Start with the LED off
  digitalWrite(ledPin, LOW);
}

void loop() {
  // Read the state of the switch
  int switchState = digitalRead(switchPin);

  // Check if the switch is pressed
  // Since we are using INPUT_PULLUP, the switch will read LOW when pressed
  if (switchState == LOW) {
    // Turn the LED on
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
  } else {
    // Turn the LED off
    digitalWrite(ledPin, LOW);
  }

  // Small delay for debouncing the switch
  delay(50);
}