// IR and LEDs

int ledred = 6;
int ledgreen = 5;
int IRsensor = 8;

void setup() 
{
  pinMode(ledred, OUTPUT);
  pinMode(ledgreen, OUTPUT);
  pinMode(IRsensor, INPUT);
}

void loop()
{
  int IRvalue = digitalRead(IRsensor);
  if (IRvalue == HIGH)
  {
    digitalWrite(ledred, HIGH);
    digitalWrite(ledgreen, LOW);
    delay(1);
  }
  else
  {
    digitalWrite(ledgreen, HIGH);
    digitalWrite(ledred, LOW);
    delay(1);
  }
}