const int LeftledPin = 8;
const int RightledPin = 9;

const int buttonPin = 2;
int buttonState = 0;

void setup() {
  // put your setup code here, to run once:
pinMode(LeftledPin, OUTPUT);
pinMode(RightledPin, OUTPUT);
pinMode(buttonPin, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
buttonState = digitalRead(buttonPin);

if (buttonState == HIGH){
  digitalWrite(LeftledPin, HIGH);
  digitalWrite(RightledPin, LOW);
}
else{
  digitalWrite(LeftledPin, LOW);
  digitalWrite(RightledPin, HIGH);
}

}