const int switchPin = 2;// the port of the pushbutton pin
const int ledPin =  13;// the port of the LED pin

boolean lastButton = LOW;
boolean ledOn = false;

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(switchPin, INPUT);
}
void loop() {
  if (digitalRead(switchPin) == HIGH && lastButton == LOW){
  //  delay(300);
    ledOn = !ledOn;
    lastButton = HIGH;
  } else {
    lastButton = digitalRead(switchPin);
  //  delay(300); 
  }
  digitalWrite(ledPin, ledOn);
}