#define pinLDR 2
#define pinLEDR 3


void setup() {
  // put your setup code here, to run once:
pinMode(pinLDR, INPUT);
pinMode(pinLEDR, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
if(digitalRead(pinLDR) == HIGH){
  digitalWrite(pinLEDR, HIGH);
} else{
  digitalWrite(pinLEDR, LOW);
}
}