const intledPin = 3;
const int buttonPin = 2;

  int buttonState = 0;

 void setup() {
  pinMode (ledPin, OUTPUT);
  pinMode (buttonPin, INPUT);
  
 }

void loop() {
  buttonState = digitalRead(buttonPin);
   if (buttonState==HIGH) {
     digitalWrite(ledPin, HIGH);{
   else
     digitalWrite(ledPin, LOW);
    
}