Arduino library of an array of Analog Inputs connected PhotoCells (aka LDR)

Arduino-PhotoCellArray.ino

#include "Arduino.h"

struct Pins {
  uint8_t sig;
  uint8_t gnd;
};

class PhotoCell
{
  public:
    PhotoCell(Pins _pins);
    int read();

  protected:
    Pins pins;
};

PhotoCell::PhotoCell(Pins _pins)
{
  pins = _pins;
  pinMode(pins.sig, INPUT_PULLUP);
  pinMode(pins.gnd, OUTPUT);
  digitalWrite(pins.gnd, LOW);
}

int PhotoCell::read() {

  return analogRead(pins.sig);
}

PhotoCell ldr[] = {Pins{A0, A1}, Pins{A2, A3}, Pins{A4, A5}, Pins{A6, A7}};

void setup()
{
  // initialize serial communications at 9600 bps
  Serial.begin(9600);
}

void loop()
{
  for (int i = 0; i < ((sizeof(ldr) / sizeof(ldr[0]))); i++) {
    Serial.print(ldr[i].read());
    Serial.print(", ");
  }
  Serial.println();
  delay(250);
}