// Define constants for pin numbers
const int ledPin = 17;      // LED connected to digital pin 17
const int buttonPin = 14;    // Push button connected to digital pin 14

// Define variables to store button state
int buttonState = 0;         // current state of the button
int lastButtonState = 0;     // previous state of the button

void setup() {
  // Initialize the LED pin as an output
  pinMode(ledPin, OUTPUT);
  // Initialize the push button pin as an input
  pinMode(buttonPin, INPUT);
}

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

  // Check if the button is pressed
  if (buttonState != lastButtonState) {
    // If the button is pressed
    if (buttonState == HIGH) {
      // Turn on the LED
      digitalWrite(ledPin, HIGH);
    } else {
      // Turn off the LED
      digitalWrite(ledPin, LOW);
    }
    // Delay a short time to debounce
    delay(50);
  }

  // Save the current state as the last state,
  // for the next time through the loop
  lastButtonState = buttonState;
}