Binart to Decimal Converter

void loop()
{ 
  binary();

}

void binary ()
{
  digitsum1 = digitalRead(digit1);
  digitsum2 = digitalRead(digit2);
  digitsum3 = digitalRead(digit3);
  digitsum4 = digitalRead(digit4);
  digitsum5 = digitalRead(digit5);

  lcd.setCursor(0, 0);

  if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      zero();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      one();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      two();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      three();    
  }
  else if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      four();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      five();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      six();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == HIGH) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == LOW)) {
      seven();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      eight();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      nine();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      ten();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      eleven();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      twelve();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      thirteen();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == HIGH) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      fourteen();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == HIGH) and (digitsum3 == HIGH) and (digitsum4 == HIGH) and (digitsum5 == LOW)) {
      fifteen();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      sixteen();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      seventeen();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      eighteen();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      nineteen();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      twenty();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      twenty_one();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      twenty_two();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == HIGH) and (digitsum3 == HIGH) and (digitsum4 == LOW) and (digitsum5 == HIGH)) {
      twenty_three();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == HIGH)) {
      twenty_four();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == HIGH)) {
      twenty_five();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == HIGH)) {
      twenty_six();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == HIGH) and (digitsum3 == LOW) and (digitsum4 == HIGH) and (digitsum5 == HIGH)) {
      twenty_seven();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == HIGH) and (digitsum5 == HIGH)) {
      twenty_eight();
  }
  else if ((digitsum1 == HIGH) and (digitsum2 == LOW) and (digitsum3 == HIGH) and (digitsum4 == HIGH) and (digitsum5 == HIGH)) {
      twenty_nine();
  }
  else if ((digitsum1 == LOW) and (digitsum2 == HIGH) and (digitsum3 == HIGH) and (digitsum4 == HIGH) and (digitsum5 == HIGH)) {
      thirty();
  }
  else {
      thirty_one();
  }
}

void zero ()
{
   lcd.print("Decimal #= 00");
   setColor(0, 255, 0);
   delay(1000);
   setColor(0, 0, 0);
   delay(1000);
}

void one ()
{
   lcd.print("Decimal #= 01");
   setColor(0, 0, 255);
   delay(1000);
   setColor(0, 0, 0);
   delay(1000);
}

void two ()
{
      lcd.print("Decimal #= 02");
    setColor(255, 0, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);

}

void three ()
{
      lcd.print("Decimal #= 03");
    setColor(255, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);

}

void four ()
{
      lcd.print("Decimal #= 04");
    setColor(80, 0, 80);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);

}

void five ()
{
    lcd.print("Decimal #= 05");
    setColor(0, 255, 255);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void six ()
{
    lcd.print("Decimal #= 06");
    setColor(244, 65, 189);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}
void seven ()
{
    lcd.print("Decimal #= 07");
    setColor(79, 244, 65);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}
void eight ()
{
    lcd.print("Decimal #= 08");
    setColor(0, 128, 128);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void nine ()
{
    lcd.print("Decimal #= 09");
    setColor(0, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void ten ()
{
    lcd.print("Decimal #= 10");
    setColor(0, 0, 255);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void eleven ()
{
    lcd.print("Decimal #= 11");
    setColor(255, 0, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twelve ()
{
    lcd.print("Decimal #= 12");
    setColor(255, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void thirteen ()
{
    lcd.print("Decimal #= 13");
    setColor(80, 0, 80);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void fourteen ()
{
    lcd.print("Decimal #= 14");
    setColor(0, 255, 255);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void fifteen ()
{
    lcd.print("Decimal #= 15");
    setColor(244, 65, 189);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void sixteen ()
{
    lcd.print("Decimal #= 16");
    setColor(79, 244, 65);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void seventeen ()
{
    lcd.print("Decimal #= 17");
    setColor(0, 128, 128);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void eighteen ()
{
    lcd.print("Decimal #= 18");
    setColor(0, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void nineteen ()
{
    lcd.print("Decimal #= 19");
    setColor(0, 0, 255);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty () 
{
    lcd.print("Decimal #= 20");
    setColor(255, 0, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);  
}

void twenty_one ()
{
    lcd.print("Decimal #= 21");
    setColor(255, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_two ()
{
    lcd.print("Decimal #= 22");
    setColor(80, 0, 80);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_three ()
{
    lcd.print("Decimal #= 23");
    setColor(244, 65, 189);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_four ()
{
    lcd.print("Decimal #= 24");
    setColor(79, 244, 65);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_five ()
{
    lcd.print("Decimal #= 25");
    setColor(0, 128, 128);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_six ()
{
    lcd.print("Decimal #= 26");
    setColor(0, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_seven ()
{
    lcd.print("Decimal #= 27");
    setColor(0, 0, 255);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_eight ()
{
    lcd.print("Decimal #= 28");
    setColor(255, 0, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void twenty_nine ()
{
    lcd.print("Decimal #= 29");
    setColor(255, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void thirty ()
{
    lcd.print("Decimal #= 30");
    setColor(80, 0, 80);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}

void thirty_one ()
{
    lcd.print("Decimal #= 00");
    setColor(0, 255, 0);
    delay(1000);
    setColor(0, 0, 0);
    delay(1000);
}