#define ldr 2
#define rele 3
#define rele1 4

void setup() {
  pinMode(ldr, INPUT);
  pinMode(rele, OUTPUT);
  pinMode(rele1, OUTPUT);

}

void loop() {
  int tutu = digitalRead(ldr);

  if(tutu == true){
    digitalWrite(rele, HIGH);
    digitalWrite(rele1, LOW);
  }
  else{
    digitalWrite(rele1, HIGH);
    digitalWrite(rele, LOW);

  }
}