Button.ino

const int buttonPin = 0;     // the number of the pushbutton pin
const int ledPin1 = 1;      // the number of the LED pin
const int ledPin2 = 2;      // the number of the LED pin

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin1, OUTPUT);   
  pinMode(ledPin2, OUTPUT);   
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);     
}

void loop(){
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed.
  // if it is, the buttonState is HIGH:
  if (buttonState == HIGH) {     
    // turn LED on:    
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);   
  } 
  else {
    // turn LED off:
    digitalWrite(ledPin1, LOW); 
    digitalWrite(ledPin2, LOW); 
  }
}