//set variable
int pin_sw1 = 13;
int pin_sw2 = 12;
int pin_sw3 = 11;

int pin_red_led = 10;
int pin_green_led = 9;
int pin_yellow_led = 8;

void setup() {
  // put your setup code here, to run once:
  pinMode(pin_sw1, INPUT_PULLUP);
  pinMode(pin_red_led, OUTPUT);
  Serial.begin(115200);

  pinMode(pin_sw2, INPUT_PULLUP);
  pinMode(pin_green_led, OUTPUT);
  Serial.begin(115200);

  pinMode(pin_sw3, INPUT_PULLUP);
  pinMode(pin_yellow_led, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  // put your main code here, to run repeatedly:
  int read_sw1 = digitalRead(pin_sw1);
  int read_sw2 = digitalRead(pin_sw2);
  int read_sw3 = digitalRead(pin_sw3);
  // Serial.println(read_sw1);
  // delay(1000);
  if (read_sw1 == 0){
    digitalWrite(pin_red_led, HIGH);
  }else{
    digitalWrite(pin_red_led, LOW);
  }
  delay(0);

  if (read_sw2 == 0){
    digitalWrite(pin_green_led, HIGH);
  }else{
    digitalWrite(pin_green_led, LOW);
  }
  delay(0);

  if (read_sw3 == 0){
    digitalWrite(pin_yellow_led, HIGH);
  }else{
    digitalWrite(pin_yellow_led, LOW);
  }
  delay(0);
}