#define RED_LED 12
#define YELLOW_LED 13
#define BUTTON 2

void setup() {
  // put your setup code here, to run once:
    pinMode(RED_LED, OUTPUT);
      pinMode(YELLOW_LED, OUTPUT);
        pinMode(BUTTON, INPUT);

          attachInterrupt(digitalPinToInterrupt(BUTTON), control_led, LOW);
          }

          void loop() {
            // put your main code here, to run repeatedly:
              digitalWrite(YELLOW_LED, HIGH);
                delay(1000);
                  digitalWrite(YELLOW_LED, LOW);
                    delay(1000);
                    }

                    void control_led()
                    {
                      int button_state = digitalRead(BUTTON);

                        if (button_state == LOW)
                          {
                              digitalWrite(RED_LED, LOW);
                                }
                                  else 
                                    {
                                        digitalWrite(RED_LED, HIGH);
                                          }
                                          }