#define Button1 15
#define Led1 13
#define Button2 2
#define Led2 12
#define Button3 0
#define Led3 27

void setup() {
pinMode(Button1, INPUT);
pinMode(Button2, INPUT_PULLUP);
pinMode(Button3, INPUT);
pinMode(Led1, OUTPUT);
pinMode(Led2, OUTPUT);
pinMode(Led3, OUTPUT);
}

void loop() {
if(digitalRead(Button1)==LOW){
  digitalWrite(Led1, HIGH);
}
else{
  digitalWrite(Led1, LOW);
}
if(digitalRead(Button2)==LOW){
  digitalWrite(Led2, HIGH);
}
else{
  digitalWrite(Led2, LOW);
}
if(digitalRead(Button3)==LOW){
  digitalWrite(Led3, HIGH);
}
else{
  digitalWrite(Led3, LOW);
}
}