IR with remote

#include <IRremote.h>

int RECV_PIN = 11;
int ledPin = 13;
int speakerPin = 10;
int numTones = 10;
int tones[] = {261, 277, 294, 311, 330, 349, 370, 392, 415, 440};
int A = 7;
int B = 6;
int C = 4;
int D = 3;
int E = 2;
int F = 8;
int G = 9;

byte num0 = 0x3F;
byte num1 = 0x6;
byte num2 = 0x5B;
byte num3 = 0x4F;
byte num4 = 0x66;
byte num5 = 0x6D;
byte num6 = 0x7D;
byte num7 = 0x7;
byte num8 = 0x7F;
byte num9 = 0x6F;
byte num00 = 0x0;

IRrecv irrecv(RECV_PIN);

decode_results results;

void on(byte num)
{
  int result = bitRead(num, 0);
  if (result == 1)
  {digitalWrite(A, HIGH);}
  else
  {digitalWrite(A, LOW);}
  result = bitRead( num, 1);

  if (result == 1)
  {digitalWrite(B, HIGH);}
  else
  {digitalWrite(B, LOW);}
  result = bitRead( num, 2);

  if (result == 1)
  {digitalWrite(C, HIGH);}
  else
  {digitalWrite(C, LOW);}
  result = bitRead( num, 3);

  if (result == 1)
  {digitalWrite(D, HIGH);}
  else
  {digitalWrite(D, LOW);}
  result = bitRead( num, 4);

  if (result == 1)
  {digitalWrite(E, HIGH);}
  else
  {digitalWrite(E, LOW);}
  result = bitRead( num, 5);

  if (result == 1)
  {digitalWrite(F, HIGH);}
  else
  {digitalWrite(F, LOW);}
  result = bitRead( num, 6);

  if (result == 1)
  {digitalWrite(G, HIGH);}
  else
  {digitalWrite(G, LOW);}

  if (result == 1)
  {digitalWrite(F, HIGH);}
  else
  {digitalWrite(F, LOW);}
  result = bitRead( num, 00);
}

void setup()
{
  Serial.begin(9600);
  irrecv.enableIRIn();
  pinMode(ledPin, OUTPUT);
  pinMode(A, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(C, OUTPUT);
  pinMode(D, OUTPUT);
  pinMode(E, OUTPUT);
  pinMode(F, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(10,OUTPUT);
}

void loop() {
  if (irrecv.decode(&results)) {
    digitalWrite(ledPin, HIGH);
    Serial.println(results.value, DEC);
    irrecv.resume();
    delay(100);
    int oldvalue = results.value;
    switch(results.value){
      case 16738455:
      Serial.println(0);
      if (oldvalue == results.value){
        on(num0);
        delay(1000);
        on(num00);
        delay(1000);
        oldvalue = results.value;
      }
      on(num0);
      delay(1000);
      irrecv.resume();
      break;
      case 16724175:
      Serial.println(1);
      on(num1);
      irrecv.resume();
      break;
      case 16718055:
      Serial.println(2);
      on(num2);
      irrecv.resume();
      break;
      case 16743045:
      Serial.println(3);
      on(num3);
      irrecv.resume();
      break;
      case 16716015:
      Serial.println(4);
      on(num4);
      irrecv.resume();
      break;
      case 16726215:
      Serial.println(5);
      on(num5);
      irrecv.resume();
      break;
      case 16734885:
      Serial.println(6);
      on(num6);
      irrecv.resume();
      break;
      case 16728765:
      Serial.println(7);
      on(num7);
      irrecv.resume();
      break;
      case 16730805:
      Serial.println(8);
      on(num8);
      irrecv.resume();
      break;
      case 16732845:
      Serial.println(9);
      on(num9);
      irrecv.resume();
      break;
    }
  }
  else{
    digitalWrite(ledPin, LOW);
  }
}