void setup() {
  pinMode(5, INPUT);// put your setup code here, to run once:
  pinMode(13, OUTPUT);
  Serial.begin(9600);
}

void loop() {
boolean estado= digitalRead(5)
  int cambio = 0

  while (estado= !estado){
    cambio++;
    Serial.println("cambio");
  if (cambio=1){
    continue;}
  }
  }

  // put your main code here, to run repeatedly:

}