// constants won't change. They're used here to set pin numbers:
const int buttonPin = 3;  // the number of the pushbutton pin
const int ledPin = 2;    // the number of the LED pin
const int buzzer = 5; 
const int buzzerButton = 4; 

// variables will change:
int buttonState = 0;  // variable for reading the pushbutton status, 0 means LOW
int buzzerState = 0; 

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(buzzerButton, INPUT);
}

void loop() {
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);
  buzzerState = digitalRead(buzzerButton);

  // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
  if (buttonState == HIGH) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
  if (buzzerState == HIGH) {
    // turn buzzer on:
    digitalWrite(buzzer, HIGH);
  } else {
    // turn buzzer off:
    digitalWrite(buzzer, LOW);
  }
}