Add Buzzer to Arduino

1const int buzzer=11;
2// the setup function runs once when you press  reset or power the board
3void setup() {
4  // initialize digital pin LED_BUILTIN  as an output.
5  pinMode(buzzer, OUTPUT);
6}
7
8// the loop function runs  over and over again forever
9void loop() {
10  digitalWrite(buzzer, HIGH);   //  turn the LED on (HIGH is the voltage level)
11  delay(1000);                       //  wait for a second
12  digitalWrite(buzzer, LOW);    // turn the LED off by making  the voltage LOW
13  delay(1000);                       // wait for a second
14}