#define ANA_IN A0

#define PIN_A 2
#define PIN_B 3
#define PIN_C 4
#define PIN_D 5
#define PIN_E 6
#define PIN_F 7
#define PIN_G 8

#define PIN_A_ON() digitalWrite(PIN_A, HIGH)
#define PIN_A_OFF() digitalWrite(PIN_A, LOW)
#define PIN_B_ON() digitalWrite(PIN_B, HIGH)
#define PIN_B_OFF() digitalWrite(PIN_B, LOW)
#define PIN_C_ON() digitalWrite(PIN_C, HIGH)
#define PIN_C_OFF() digitalWrite(PIN_C, LOW)
#define PIN_D_ON() digitalWrite(PIN_D, HIGH)
#define PIN_D_OFF() digitalWrite(PIN_D, LOW)
#define PIN_E_ON() digitalWrite(PIN_E, HIGH)
#define PIN_E_OFF() digitalWrite(PIN_E, LOW)
#define PIN_F_ON() digitalWrite(PIN_F, HIGH)
#define PIN_F_OFF() digitalWrite(PIN_F, LOW)
#define PIN_G_ON() digitalWrite(PIN_G, HIGH)
#define PIN_G_OFF() digitalWrite(PIN_G, LOW)

void ALL_ON()
{
  PIN_A_ON();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_ON();
  PIN_E_ON();
  PIN_F_ON();
  PIN_G_ON();
}

void ALL_OFF()
{
  PIN_A_OFF();
  PIN_B_OFF();
  PIN_C_OFF();
  PIN_D_OFF();
  PIN_E_OFF();
  PIN_F_OFF();
  PIN_G_OFF();
}

void zero()
{
  PIN_A_ON();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_ON();
  PIN_E_ON();
  PIN_F_ON();
  PIN_G_OFF();
}

void one()
{
  PIN_A_OFF();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_OFF();
  PIN_E_OFF();
  PIN_F_OFF();
  PIN_G_OFF();
}

void two()
{
  PIN_A_ON();
  PIN_B_ON();
  PIN_C_OFF();
  PIN_D_ON();
  PIN_E_ON();
  PIN_F_OFF();
  PIN_G_ON();
}

void three()
{
  PIN_A_ON();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_ON();
  PIN_E_OFF();
  PIN_F_OFF();
  PIN_G_ON();
}

void four()
{
  PIN_A_OFF();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_OFF();
  PIN_E_OFF();
  PIN_F_ON();
  PIN_G_ON();
}


void five()
{
  PIN_A_ON();
  PIN_B_OFF();
  PIN_C_ON();
  PIN_D_ON();
  PIN_E_OFF();
  PIN_F_ON();
  PIN_G_ON();
}

void six()
{
  PIN_A_ON();
  PIN_B_OFF();
  PIN_C_ON();
  PIN_D_ON();
  PIN_E_ON();
  PIN_F_ON();
  PIN_G_ON();
}

void seven()
{
  PIN_A_ON();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_OFF();
  PIN_E_OFF();
  PIN_F_ON();
  PIN_G_OFF();
}

void eight()
{
  PIN_A_ON();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_ON();
  PIN_E_ON();
  PIN_F_ON();
  PIN_G_ON();
}

void nine()
{
  PIN_A_ON();
  PIN_B_ON();
  PIN_C_ON();
  PIN_D_ON();
  PIN_E_OFF();
  PIN_F_ON();
  PIN_G_ON();
}


void setup() {
  // put your setup code here, to run once:

  Serial.begin(115200);

  pinMode(PIN_A, OUTPUT);
  pinMode(PIN_B, OUTPUT);
  pinMode(PIN_C, OUTPUT);
  pinMode(PIN_D, OUTPUT);
  pinMode(PIN_E, OUTPUT);
  pinMode(PIN_F, OUTPUT);
  pinMode(PIN_G, OUTPUT);

  ALL_ON();
  delay(250);
  ALL_OFF();

}


void display(int number)
{
  switch (number) {
    case 0:
      zero();
      break;
    case 1:
      one();
      break;
    case 2:
      two();
      break;
    case 3:
      three();
      break;
    case 4:
      four();
      break;
    case 5:
      five();
      break;
    case 6:
      six();
      break;
    case 7:
      seven();
      break;
    case 8:
      eight();
      break;
    case 9:
      nine();
      break;
  }
}


void loop()
{
  float ana_value = (float)analogRead(ANA_IN);
  int disp_value = (int)(ana_value / 1023.0 * 100);
  disp_value /= 10;

  // Serial.print(ana_value/1023.0);
  // Serial.print("\t");
  // Serial.println(disp_value);

  display(disp_value);
  delay(10);
}