int led = 10;        // LED connected to digital pin 10
int buttonPin = 7;   // Pushbutton connected to digital pin 7
int val = 0;         // Variable to store the button state

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

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

  // If the button is pressed (LOW), turn on the LED
  if (val == LOW) {
    digitalWrite(led, HIGH);
  } 
  // Otherwise, turn off the LED
  else {
    digitalWrite(led, LOW);
  }
}