int buzzer = 8;
int nota = 8;
int Do = 262;
int Re = 294;
int Mi = 330;
int Fa = 349;
int Sol = 392;
int La = 440;
int Si = 494;
int DO = 523;
int notalar[] = {Do,Re,Mi,Fa,Sol,La,Si,DO};
 void setup() {
  // put your setup code here, to run once:
pinMode(buzzer,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i = 0;i<nota;i++){
    tone(buzzer,notalar[i]);
    delay(500);
    noTone(buzzer);
    delay(20);
  } 
  noTone(buzzer);
}