button2

int Pin =8;
int ledPin = 13;
boolean lastButton = LOW;
boolean ledOn = false;

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

void loop()
{
  if (digitalRead(Pin) == HIGH && lastButton == LOW)
  {
    ledOn = !ledOn;
    lastButton - HIGH;
  }
  else
  {
    lastButton = digitalRead(Pin);
  }
  digitalWrite(ledPin, ledOn);
}