int led =25;
int ir=26;

void setup() {
  pinMode(led,OUTPUT);
  pinMode(ir, INPUT);
  
}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(ir)==LOW)
  {
    digitalWrite(led, HIGH);
  }
  else{
    digitalWrite(led, LOW);
  }
    // this speeds up the simulation
}