#define BTN0 A1
#define BTN1 A2
#define BTN2 A3
#define BTN3 A4
int LED0 = 9;
int LED1 = 10;
int LED2 = 11;
int LED3 = 12;
int BZR = 13;
long ALEATORIO;
int ALEATORIOS[100];
int CONT;
int CONT2;

int DO = 261;
int RE = 293;
int MI = 329;
int FA = 349;
int SOL = 392;
int LA = 440;
int SI = 493;


void setup() {
  // put your setup code here, to run once:
 pinMode(BTN0, INPUT);
 pinMode(LED0, OUTPUT);
 pinMode(BTN1, INPUT);
 pinMode(LED1, OUTPUT);
 pinMode(BTN2, INPUT);
 pinMode(LED2, OUTPUT);
 pinMode(BTN3, INPUT);
 pinMode(LED3, OUTPUT);
 pinMode(BZR, OUTPUT);

 Serial.begin(9600);
 CONT = 0;
 randomSeed(analogRead(0));

}

void loop() {
  // put your main code here, to run repeatedly:
  ALEATORIO = random(4);
  ALEATORIOS[CONT]=ALEATORIO;

  ALERTA(ALEATORIO, CONT);
  
  CONT++;

  

  if (CONT==10){
     //Serial.println("");
    
    for(CONT2=0;CONT2<CONT;CONT2++)
    {
      //Serial.print(ALEATORIOS[CONT2]);
      //Serial.print(" ");
      ALERTA(ALEATORIOS[CONT2],CONT2);
    }    
    //Serial.println("");
    CONT=0;
  }

}

void ALERTA(int NUMALE,int CONT1){
  //Serial.print(CONT1);
  //Serial.print(" ");
  switch (NUMALE){

    case 0:
     //Serial.println(NUMALE);
     digitalWrite(LED0,HIGH);
     tone(BZR,DO,500);
     delay(1000);
     digitalWrite(LED0, LOW);
     break;

    case 1:
     //Serial.println(NUMALE);
     digitalWrite(LED1,HIGH);
     tone(BZR,MI,500);
     delay(1000);
     digitalWrite(LED1, LOW);
     break;

    case 2:
     //Serial.println(NUMALE);
     digitalWrite(LED2,HIGH);
     tone(BZR,SOL,500);
     delay(1000);
     digitalWrite(LED2, LOW);
     break; 

    case 3:
     //Serial.println(NUMALE);
     digitalWrite(LED3,HIGH);
     tone(BZR,SI,500);
     delay(1000);
     digitalWrite(LED3, LOW);
     break;

    default:
     //Serial.println("ERROR");
     delay(1000);
     break;
  }

}