Obstacle Detector using IR module - tutorial

1#define IRpin 2
2#define ledPin 13
3void setup() {
4  // put your  setup code here, to run once:
5pinMode(IRpin,INPUT);
6pinMode(ledPin,OUTPUT);
7}
8
9void  loop() {
10  // put your main code here, to run repeatedly:
11  int IRread = digitalRead(IRpin);
12  digitalWrite(ledPin,LOW);
13if(IRread == 0){
14  digitalWrite(ledPin,HIGH);
15}
16}