int buttonState = 0;        // Variable to store the current button state

int lastButtonState = 0;    // Variable to store the previous button state

int ledState = LOW;         // Variable to store the LED state (initially off)

​

void setup() 

{

  // Initialize the LED pin as an output

  pinMode(13, OUTPUT);

  // Initialize the push button pin as an input

  pinMode(2, INPUT);

}

​

void loop() {

  // Read the current state of the push button

  buttonState = digitalRead(2);

  // Check if the button state has changed from the last loop

  if (buttonState != lastButtonState) 

  {

    // If the button state is HIGH (pressed)

    if (buttonState == HIGH) 

    {

      // Toggle the LED state

      ledState = !ledState;

      // Update the LED pin with the new state

      digitalWrite(13, ledState);