// Define pin numbers
const int ledPin = 16; // Pin connected to the LED
const int buttonPin = 17; // Pin connected to the pushbutton

// Variables for button state
int buttonState = 0;

void setup() {
  // Initialize LED pin as an output
  pinMode(ledPin, OUTPUT);
  
  // Initialize button pin as an input with an internal pull-up resistor
  pinMode(buttonPin, INPUT_PULLUP);
}

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

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