int buzzer=9;//set the buzzer control digits IO pin
void setup() {
  // put your setup code here, to run once:
  pinMode(buzzer,OUTPUT);//set pin9 as output
}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i=0;i<0;i++){//make a sound
  digitalWrite(buzzer,HIGH);//send high signal to buzzer
  delay(1);//delay 1ms
  digitalWrite(buzzer,LOW);//send lo signal to buzzer
  delay(1);
  }
  delay(50);
  for(int j=0;j<100;j++){//make another sound
  digitalWrite(buzzer,HIGH);
  delay(2);
  }
  delay(100);
}