int buttonPin = 2 ;
int ledPin = 13 ;
bool buttonState = false;

void setup() {
  // put your setup code here, to run once:
 pinMode(ledPin, OUTPUT);
 pinMode(ledPin, INPUT);
} 


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

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