int buttonPin = 2; //button is connected to this pin
int ledPin = 13; //led is connected to this pin

void setup() {
  // put your setup code here, to run once:
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  bool buttonPressed = digitalRead(buttonPin);

  if (buttonPressed) {
    digitalWrite(ledPin, HIGH);
  } 
    }