const int buzzer=8;
const int led=9;
const int pushbutton=10;
int pushbuttonstate=0;
void setup() {
  Serial.begin(115200);
  pinMode(buzzer, OUTPUT);
  pinMode(led, OUTPUT);
  pinMode(pushbutton, INPUT);

}

void loop() {
  digitalWrite(led,HIGH);
  pushbuttonstate=digitalRead(pushbutton);
  if (pushbuttonstate==HIGH)
{
 digitalWrite(buzzer, HIGH);
 tone(buzzer,900);
 delay(500);
 tone(buzzer,800);
 delay(1000);
}
  else {
    digitalWrite(buzzer,LOW);
    noTone(buzzer);
  }

}