#define dataPin 11
#define clockPin 12
#define latchPin 8

struct Display
{

  byte hexDigits[10]
  {
    0x81,
    0xED,
    0x43,
    0x49,
    0x2D,
    0x19,
    0x11,
    0xCD,
    0x1,
    0xD
  };
  
  byte displayVals[4];
  display()
  {
    for (int i=0;i<4;i++)
    {
      displayVals[i] = hexDigits[0];
    }
  };
};

byte hexDigits[10]
{
  0x81,
  0xED,
  0x43,
  0x49,
  0x2D,
  0x19,
  0x11,
  0xCD,
  0x1,
  0xD
};

void sendDigit(short digit)
{
  shiftOut(11,12,LSBFIRST,hexDigits[digit]);
}

void displayDigits()
{
  digitalWrite(latchPin, LOW);
  delay(10);
  digitalWrite(latchPin, HIGH);
  delay(10);
  digitalWrite(latchPin, LOW);
}

void setup() 
{
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(latchPin, OUTPUT);
  digitalWrite(clockPin, LOW);
  digitalWrite(latchPin, LOW);
  Serial.begin(9600);
}

void loop() 
{
  for (int i;i<10;i++)
  {
    sendDigit(i);
    delay(10);
    displayDigits();
    delay(500);
  }

  Display disp;
  Serial.println("Hello world");
  Serial.println(disp.displayVals[0]);

  // sendDigit(0);
  // sendDigit(1);
  // displayDigits();
}