const int switchPin = 13;  // Connect the switch to digital pin 2
const int ledPin = 17;     // Connect the LED to digital pin 3

int switchState = 0;  // variable to store the state of the switch
int lastSwitchState = 0;  // variable to store the previous state of the switch
int ledState = LOW;   // variable to store the state of the LED (initially off)

void setup() {
  pinMode(switchPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

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

  // Check if the switch state has changed
  if (switchState != lastSwitchState) {
    // If the new state is HIGH (pressed), toggle the LED
    if (switchState == HIGH) {
      if (ledState == LOW) {
        ledState = HIGH;
      } else {
        ledState = LOW;
      }
      digitalWrite(ledPin, ledState);
    }
    // Save the current switch state for comparison in the next iteration
    lastSwitchState = switchState;
    // A small delay to debounce the switch (optional, depending on your switch)
    delay(50);
  }
}