// Define variables
int buttonPin = 2; // Digital pin where the button is connected.
int ledPin = 13;   // Digital pin where the LED is connected.
bool buttonState = false;

void setup() {
  pinMode(ledPin, OUTPUT);    // LED pin as an output.
  pinMode(buttonPin, INPUT);  // Button pin as an input.
}

void loop() {
  // Read the state of the button
  buttonState = digitalRead(buttonPin);

  // Check if the button is pressed
  if (buttonState == HIGH){
    digitalWrite(ledPin, HIGH);   // Turn LED on.
  } else {
    digitalWrite(ledPin, LOW);    // Turn LED off.
  }
}