const int buttonPin = 2;
const int ledPin =  13;

int buttonState = 0;
int count = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
  buttonState = digitalRead(buttonPin);
  delay(100);
  if (buttonState == HIGH){
    count = count + 1;
    Serial.println(count,DEC);
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
}