#define led 2
const int pin= 3;
#define buzz 7


void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
pinMode(pin, INPUT);
Serial.begin(9600);
pinMode(buzz, OUTPUT);
}

void loop() {
int estado=digitalRead(pin);// put your main code here, to run repeatedly
if(estado==0){digitalWrite(led, HIGH);noTone(buzz);}
else{digitalWrite(led,LOW);tone(buzz,760,500);delay(1000);noTone(buzz);}

}