int ledmerah  = 2;
int ledhijau = 7;
int ledkuning = 8;

int tombolmerah = A2;
int tombolhijau = A1;
int tombolkuning = A0;

int datamerah;
int datahijau;
int datakuning;

void setup() {
  // put your setup code here, to run once:
pinMode(ledmerah, OUTPUT);
pinMode(ledhijau, OUTPUT);
pinMode(ledkuning, OUTPUT);
pinMode(tombolmerah, INPUT_PULLUP);
pinMode(tombolhijau, INPUT_PULLUP);
pinMode(tombolkuning, INPUT_PULLUP);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
datamerah=digitalRead(tombolmerah);
datahijau=digitalRead(tombolhijau);
datakuning=digitalRead(tombolkuning);

if(datamerah==0){
  digitalWrite(ledmerah, HIGH);
  digitalWrite(ledhijau, LOW);
  digitalWrite(ledkuning, LOW);
}

if(datakuning==0){
  digitalWrite(ledmerah, LOW);
  digitalWrite(ledhijau, HIGH);
  digitalWrite(ledkuning, LOW);
}

if(datahijau==0){
  digitalWrite(ledmerah, LOW);
  digitalWrite(ledhijau, LOW);
  digitalWrite(ledkuning, HIGH);
}
else{
  digitalWrite(ledmerah, LOW);
  digitalWrite(ledhijau, LOW);
  digitalWrite(ledkuning, LOW);
}
}