int tempC;
int unidad;
int decena;

float Temperatura;
float ValSen;

void apagar()
{
  digitalWrite(A1, LOW);
  digitalWrite(A2, LOW);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
}
void cerou()
{
  digitalWrite(A1, HIGH);
  digitalWrite(A2, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, HIGH);
  digitalWrite(6, LOW);
  return;
}

void oneu()
{
  digitalWrite(A1, LOW);
  digitalWrite(A2, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  return;
}
void  twou()
{
  digitalWrite(A1, HIGH);
  digitalWrite(A2, HIGH);
  digitalWrite(2, LOW);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, LOW);
  digitalWrite(6, HIGH);
  return;
}
void threeu()
{
  digitalWrite(A1, HIGH);
  digitalWrite(A2, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, HIGH);
  return;
}
void fouru()
{
  digitalWrite(A1, LOW);
  digitalWrite(A2, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, HIGH);
  digitalWrite(6, HIGH);
  return;
}
void fiveu()
{
  digitalWrite(A1, HIGH);
  digitalWrite(A2, LOW);
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(5, HIGH);
  digitalWrite(6, HIGH);
  return;
}
void sixu()
{
  digitalWrite(A1, HIGH);
  digitalWrite(A2, LOW);
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, HIGH);
  digitalWrite(6, HIGH);
  return;
}
void sevenu()
{
  digitalWrite(A1, HIGH);
  digitalWrite(A2, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  return;
}
void eighu()
{
  
  digitalWrite(A1, HIGH);
  digitalWrite(A2, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(5, HIGH);
  digitalWrite(6, HIGH);
  return;
}
void nineu()
{
  digitalWrite(A1, HIGH);
  digitalWrite(A2, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, HIGH);
  digitalWrite(6, HIGH);
  return;
}
void cerod()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, HIGH);
  digitalWrite(13, LOW);
  return;
}
void oned()
{
  digitalWrite(7, LOW);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  return;
}
void twod()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, LOW);
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, LOW);
  digitalWrite(13, HIGH);
  return;
}
void threed()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, HIGH);
  return;
}
void fourd()
{
  digitalWrite(7, LOW);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, HIGH);
  digitalWrite(13, HIGH);
  return;
}
void fived()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, LOW);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, LOW);
  digitalWrite(12, HIGH);
  digitalWrite(13, HIGH);
  return;
}
void sixd()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, LOW);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, HIGH);
  digitalWrite(13, HIGH);
  return;
}
void sevend()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  return;
}
void eighd()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, HIGH);
  digitalWrite(13, HIGH);
  return;
}
void nined()
{
  digitalWrite(7, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, HIGH);
  return;
}
void setup()
{
    pinMode (A0, INPUT);
    Serial.begin (9600);

    pinMode (A1,OUTPUT);
    pinMode (A2,OUTPUT);
    pinMode (2,OUTPUT);
    pinMode (3,OUTPUT);
    pinMode (4,OUTPUT);
    pinMode (5,OUTPUT);
    pinMode (6,OUTPUT);

    pinMode (7,OUTPUT);
    pinMode (8,OUTPUT);
    pinMode (9,OUTPUT);
    pinMode (10,OUTPUT);
    pinMode (11,OUTPUT);
    pinMode (12,OUTPUT);
    pinMode (13,OUTPUT);
    
apagar();
}

void loop ()
{
  ValSen = analogRead (A0);
  Temperatura = (ValSen * 5.0 * 100.0) / 1023.0;

  tempC = Temperatura;

  decena = tempC/10;
  unidad = tempC%10;

  Serial.println(Temperatura);
  Serial.println(tempC);
  Serial.println(unidad);
  Serial.println(decena);

  delay(1000);

  if(unidad == 0)
     cerou();
     
  if(unidad == 1)
     oneu();
     
  if(unidad == 2)
     twou();
     
  if(unidad == 3)
     threeu();     
     
  if(unidad == 4)
     fouru();

  if(unidad == 5)
     fiveu();

  if(unidad == 6)
     sixu();

  if(unidad == 7)
     sevenu();

  if(unidad == 8)
     eighu();

  if(unidad == 9)
     nineu();

   if(decena == 0)
    cerod(); 

  if(decena == 1)
    oned(); 

  if(decena == 2)
    twod(); 

  if(decena == 3)
    threed();

  if(decena == 4)
    fourd(); 

  if(decena == 5)
    fived(); 

  if(decena == 6)
    sixd(); 

  if(decena == 7)
    sevend(); 

  if(decena == 8)
    eighd(); 

  if(decena == 9)
    nined(); 

    delay(1000);
}