int pinBuzzer = 23;
int pinBotao =  22;
int pinBotao1 = 21;
int pinBotao2 = 19;
int pinBotao3 = 18;
int pinBotao4 = 35;
int pinBotao5 = 32;
int pinBotao6 = 33;


void setup() {
  pinMode(pinBuzzer, OUTPUT);
  pinMode(pinBotao,  INPUT_PULLUP);
  pinMode(pinBotao1, INPUT_PULLUP);
  pinMode(pinBotao2, INPUT_PULLUP);
  pinMode(pinBotao3, INPUT_PULLUP);
  pinMode(pinBotao4, INPUT_PULLUP);
  pinMode(pinBotao5, INPUT_PULLUP);
  pinMode(pinBotao6, INPUT_PULLUP);
}

void loop() {
  if (digitalRead(pinBotao) == LOW) {
    tone(pinBuzzer, 262);
  } else if (digitalRead(pinBotao1) == LOW) {
    tone(pinBuzzer, 294);
  } else if (digitalRead(pinBotao2) == LOW) {
    tone(pinBuzzer, 330);
  } else if (digitalRead(pinBotao3) == LOW) {
    tone(pinBuzzer, 349);
  } else if (digitalRead(pinBotao4) == LOW) {
    tone(pinBuzzer, 392);
  } else if (digitalRead(pinBotao5) == LOW) {
    tone(pinBuzzer, 440);
  } else if (digitalRead(pinBotao6) == LOW) {
    tone(pinBuzzer, 494);
  } else {
    noTone(pinBuzzer);
  }
  delay(100);
}