Laser Light Alarm

1//codes by yashs lab
2
3void setup() {
4pinMode(13,OUTPUT);//connect  pin no.13 to buzzer positive
5pinMode(9,INPUT);//connect pin no. 9 to do pin of  ldr
6delay(500);
7}
8
9void loop() {
10if(digitalRead(9)==HIGH)
11{
12  
13digitalWrite(13,HIGH);
14}
15  
16  
17}
18