const int ledPin = 13;
const int buttonpin = 2;
int buttonstate = 0;
bool state = false;
void setup() {
  Serial.begin(115200);
  pinMode(ledPin,OUTPUT);
  pinMode(buttonpin, INPUT);
  // put your setup code here, to run once:

}

void loop() {
  buttonstate = digitalRead(buttonpin);
  Serial.println(buttonstate);
  if (buttonstate == HIGH) {
    state = true;
    while (state) {
      buttonstate = digitalRead(buttonpin);
      digitalWrite(ledPin,HIGH);
      if (buttonstate == HIGH) {
        state = false;
        buttonstate == LOW;
      }
    }
    
  } else  {
    digitalWrite(ledPin,LOW);
    }

    
  

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

}