LED Button

const int buttonPin = A0; // Pin connected to the button
const int ledPin = 9; // Pin connected to the LED
void setup() {
pinMode(buttonPin, INPUT_PULLUP); // Set button pin as input with internal pull-up resistor
pinMode(ledPin, OUTPUT); // Set LED pin as output
}
void loop() {
int buttonState = digitalRead(buttonPin); // Read the state of the button
if (buttonState == LOW) { // Button is pressed (LOW because of pull-up resistor)
digitalWrite(ledPin, HIGH); // Turn on the LED
} else {
digitalWrite(ledPin, LOW); // Turn off the LED
}
}