int led = 13;
int buttonPin = 2; 
volatile bool ledState = LOW;
volatile bool buttonPressed = false;
void setup() {
  // put your setup code here, to run once:
pinMode(led,OUTPUT);
pinMode(buttonPin,INPUT);
attachInterrupt(digitalPinToInterrupt(buttonPin),Interrupts,RISING);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(led,HIGH);
  Serial.println("Continously ON");
  delay(1000);
  if (buttonPressed){
    digitalWrite(led,LOW);
    Serial.println("Interrupt occurs");
    delay(1000);
    buttonPressed = false;
    Serial.println("Interrupt ends");
  }
}

void Interrupts() {
  buttonPressed = true;
}