int x;
pinMode(3, INPUT_PULLUP);

#define BT1
#define BT2
#define LED_RED 12




void setup() {
  Serial.begin(9600)
  pinMode(BT1, INPUT_PULLUP);
  pinMode(BT2, INPUT_PULLUP);
  pinMode(LED_RED, OUTPUT);
}

void loop() {

x = digitalRead(BT2)
//Serial.println(x);
//delay(2000);
{
if(x==0) 
digitalWrite(LED_RED, HIGH);

else 
digitalWrite(LED_RED, LOW);
}


}
pinMode (3, INPUT);

digitalRead(3)

digitalWrite();

delay()