#define BUZZER 0
#define PUSH 1

void setup() {
  // put your setup code here, to run once:
pinMode(BUZZER, OUTPUT);
pinMode(PUSH, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(PUSH) == 0) {
    tone (BUZZER, 150);
    delay (100); }
  else
    {
    tone (BUZZER, 0);
    }
  delay(1); // this speeds up the simulation
}