#define led1 16
#define led2 17
#define led3 18
#define led4 19
#define sw1 12
#define sw2 13
int led[]={led1,led2,led3,led4};


void setup() {
  pinMode(led1, OUTPUT);
  pinMode(sw1, INPUT_PULLUP);
  pinMode(sw2, INPUT_PULLUP);  
  //use for when you want to pull up without connecting the physical circuit
  Serial.begin(115200);
}


void loop() {
  if(digitalRead(sw1)==0){    //0 because pull up
    Serial.println("LED On");
    delay(50);
  }
  if(digitalRead(sw2)==0){
    digitalWrite(led1,LOW);
    Serial.println("LED Off");
    delay(50);
  }
}