a.cpp

void loop() {
  if (sensors.available())
  {
    if (Serial.available() > 0)
    {
      while(Serial.available() > 0)
        Serial.read();
      for (byte i=0; i<SENSORS_NUM; i++)
      {
        float temperature = sensors.readTemperature(FA(address[i]));
        Serial.print(F("#"));
        Serial.print(i);
        Serial.print(F(": "));
        Serial.print(temperature);
        Serial.println(F(" 'C"));
      }
    }
    sensors.request();
  }
}