// put your setup code here, to run once:
const int buttonpin = 2;
const int ledpin = 3;
int buttonstate = 0;
void setup() {
  pinMode(ledpin,OUTPUT);
  pinMode(buttonpin, INPUT);
}

void loop() {
  buttonstate = digitalRead(buttonpin);
  if(buttonstate == LOW) {
    digitalWrite(ledpin, HIGH);
  }
  else{digitalWrite(ledpin, LOW);
  }
  // put your main code here, to run repeatedly:

}