void setup() {
  // put your setup code here, to run once:
pinMode(2 , OUTPUT);
pinMode(5 , INPUT);

Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
int value = digitalRead(5);
  Serial.println(value);

if (value == 1) {
  digitalWrite(2 , HIGH);
}
else {
  digitalWrite(2 , LOW);
}
}