class IR{
  public:
    byte pin;
    begin(byte p){
      pin = p;
      pinMode(p, INPUT);
    }
    bool read(){ return digitalRead(pin);}
    void print(){
      Serial.print("Sensor on pin " + String(pin) + " val = ");
      Serial.println(read());
    }
};
IR sensor;
void setup() {
  Serial.begin(9600);
  sensor .begin(13);
}
void loop() {
  sensor .print();
  delay(100);
}