const byte pinTaster[] = {3, 4, 5};
int counter[] = {0, 0, 0};
int merkerTaster[] = {0, 1, 2};
int statusTaster[] = {0, 1, 2};


void schalter(int pin) {
    statusTaster[pin] = !digitalRead(pinTaster[pin]);
    delay(10);// zum entprellen
  if (statusTaster[pin] & !merkerTaster[pin]) {
    merkerTaster[pin] = true;
    counter[pin] ++;
    Serial.println (counter[pin]);
  }
  if (!statusTaster[pin]) {
    merkerTaster[pin] = false;
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(pinTaster[0], INPUT_PULLUP);
  pinMode(pinTaster[1], INPUT_PULLUP);
  pinMode(pinTaster[2], INPUT_PULLUP);
}

void loop() {
schalter(0);
schalter(1);
schalter(2);
}