const int LED_PIN = 7;
const int BUTTON_PIN = 3;

int buttonState = 0;

void setup() {
  // put your setup code here, to run once:
  
  // initialized the LED pin as output
  pinMode(LED_PIN,OUTPUT);
  // initialized the pushbutton pin as an input
  pinMode(BUTTON_PIN,INPUT);
  

}

void loop() {
  // put your main code here, to run repeatedly:

  buttonState = digitalRead(BUTTON_PIN);
  
  if(buttonState == HIGH){
    digitalWrite(LED_PIN,LOW);
  }else{
    digitalWrite(LED_PIN,HIGH);
  }
}