const int pb = 11;
const int led = 13;
void setup() {

  pinMode(pb, INPUT);
  pinMode(led, OUTPUT);
  Serial.begin(9600);

}

void loop() {

  int count = 0;
  Serial.println(count);
  while (count > 2){
    int lastState = LOW;
    
    if(lastState == LOW && pb == HIGH ){
      lastState = 1;
      count++;
      Serial.println(count);
     }

    if(lastState == HIGH && pb == LOW ){
      lastState = LOW;
        
    }

  }
  Serial.println ("Exit while loop");
  digitalWrite(led, HIGH);
}