Task -1 Motion Detection

int pir = 7;
int val=0;
int led=13;
// motion - task 1
void setup() {
  pinMode(pir, INPUT);
  pinMode(led, OUTPUT);

  Serial.begin(9600);
}
void loop() {
val = digitalRead(pir);
if(val==HIGH) {
  digitalWrite(led, HIGH);
}
else {
  digitalWrite(led, LOW);
}
}