const int buttonPin = 2; // Pin connected to pushbutton
const int ledPin = 13; // Pin connected to LED 
int buttonState = 0; // Give pushbutton a value
void setup() {
 pinMode(ledPin, OUTPUT); // Set LED pin as output 
 pinMode(buttonPin, INPUT); // Set pushbutton pin as input
}
void loop() { 
 buttonState = digitalRead(buttonPin); // Read input from pin 2
 if (buttonState == HIGH) { // If pushbutton is pressed, set as HIGH
 digitalWrite(ledPin, HIGH); // Turn on LED
 }
 else {
 digitalWrite(ledPin, LOW); // Otherwise, turn off LED
 }
}