//Pin Initialization
//Define the pin no for the push button
const int buttonPin = 9;
const int ledPin = 10 ;
const int buzzPin = 11;
// Define a variable to hold the current state of the button
int buttonState = LOW;
int buzzerState = LOW ;
int dt = 400 ;
int frq = 250;

void setup() {
  
  //Start the serial monitor
  Serial.begin(9600);
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzPin, OUTPUT);

}
  
void loop() {
  // put your main code here, to run repeatedly:
    //Read the current state of the button(HIGH or LOW)
  buttonState = digitalRead(buttonPin);
    
  Serial.print(" Button = ");
  Serial.println(buttonState);

    //Check if the button1 is currently pressed(LOW)
    if(buttonState == LOW){

      buzzerState =!buzzerState;
      digitalWrite(ledPin , buzzerState );// this is the synchronisation of led and buzzer state
        
      if(buzzerState == HIGH){
        tone(buzzPin , frq);
      }else {
        noTone(buzzPin);
      }
  delay(dt);
    }
        
}
// push button 8,9
// led 10(pwm pin)
//buzzer 11
// if we use const then we can't change afterwards int he body too. it is reserved pin
// if we use #define then afterwards if we want we can change in the body.