const int interruptPin2 = 2;
volatile bool isButtonPressed2 = false;
//
const int interruptPin3 = 3;
volatile bool isButtonPressed3 = false;

void setup() 
{
   Serial.begin(9600);
   pinMode(interruptPin2, INPUT_PULLUP);
   attachInterrupt(digitalPinToInterrupt(interruptPin2), button_pressed2, LOW);//pin#, ISR, Mode
   Serial.println("Pin 2 set up is done");
   //
   pinMode(interruptPin3, INPUT_PULLUP);
   attachInterrupt(digitalPinToInterrupt(interruptPin3), button_pressed3, LOW);//pin#, ISR, Mode
   Serial.println("Pin 3 set up is done");
   pinMode(interruptPin2, OUTPUT);
   pinMode(3, OUTPUT);
}
//
void loop() 
{
  //Serial.println("In main loop");
  Serial.println("Button 2 Pressed!");
   if(isButtonPressed2){
      
      isButtonPressed2 = false;
    }
     //
      if(isButtonPressed3){
      Serial.println("Button 3 Pressed!");
      isButtonPressed3 = false;
   }
}

//ISR for pin 2
void button_pressed2() 
{
   isButtonPressed2 = true;
}

//ISR for pin 3
void button_pressed3() 
{
   isButtonPressed3 = true;
}
//
 void LED()
{
  digitalWrite(3, HIGH);   // turn the LED on (High voltage level)
  delay(1000);                       // wait for one second
  digitalWrite(3, LOW);    // turn the LED off (Low voltage level)
  delay(1000);               // wait for a second
  
  
}