int dip_switch[8] = {2, 3, 4, 5, 6, 7, 8, 9};
int read_dip_switch[8] = {};
int buzzer = 13;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  for (int i = 0; i<=8; i++) {
    pinMode(dip_switch[i], INPUT);
  }
  pinMode(buzzer, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 0; i<=8; i++) {
    read_dip_switch[i] = digitalRead(dip_switch[i]);
  }
  if (read_dip_switch[0] == true) { 
    tone(buzzer, 100);
  }
  else if (read_dip_switch[1] == true) { 
    tone(buzzer, 200);
  }
  else if (read_dip_switch[2] == true) { 
    tone(buzzer, 300);
  }
  else if (read_dip_switch[3] == true) { 
    tone(buzzer, 400);
  }
  else if (read_dip_switch[4] == true) { 
    tone(buzzer, 500);
  }
  else if (read_dip_switch[5] == true) { 
    tone(buzzer, 600);
  }
  else if (read_dip_switch[6] == true) { 
    tone(buzzer, 700);
  }
  else if (read_dip_switch[7] == true) { 
    tone(buzzer, 800);
  }
  else {
    noTone(buzzer);
  }
  delay(100);
}