#include <IRremote.h>
#include <LiquidCrystal.h>

#define PIN_RECEIVER 2   

IRrecv receiver(PIN_RECEIVER);

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

int A;
int B;
int hasil;
int Result;


void setup()
{
  Serial.begin(115200);
  lcd.begin(16, 2);
  receiver.enableIRIn(); 
}

void loop()
{
  lcd.setCursor(0,0);
  lcd.print("A: "); 
  lcd.print(A);
  lcd.setCursor(12,0);
  lcd.print("B: "); 
  lcd.print(B);
  lcd.setCursor(4,1);
  lcd.print("TOTAL: "); 
  lcd.print(hasil);

  if (receiver.decode()) {
      long int deCode = receiver.decodedIRData.command;

    if(deCode == 2){ 
      hasil = A+B;
      A = 0;
      B = 0;
    }

    if(deCode == 152){
      hasil = A-B;
      A = 0;
      B = 0;
    }

      switch (deCode) {
        case 48: //tombol 1
        if (A == 0) {
          lcd.clear();
          A = 1;
          lcd.print("1");
        } else {
          lcd.clear();
          B = 1;
          lcd.print("1");
        } break;

        case 24: //tombol 2
        if (A == 0) {
          A = 2;
          lcd.clear();
          lcd.print("2");
        } else {
          B = 2;
          lcd.clear();
          lcd.print("2");
        } break;

        case 122: //Tombol 3
        if (A == 0) {
          A = 3;
          lcd.clear();
          lcd.print("3");
        } else {
          B = 3;
          lcd.clear();
          lcd.print("3");
        } break;

        case 16: //Tombol 4
        if (A == 0) {
          A = 4;
          lcd.clear();
          lcd.print("4");
        } else {
          B = 4;
          lcd.clear();
          lcd.print("4");
        } break;

        case 56: //Tombol 5
        if (A == 0) {
          A = 5;
          lcd.clear();
          lcd.print("5");
        } else {
          B = 5;
          lcd.clear();
          lcd.print("5");
        } break;

        case 90: //Tombol 6
        if (A == 0) {
          A = 6;
          lcd.clear();
          lcd.print("6");
        } else {
          B = 6;
          lcd.clear();
          lcd.print("6");
        } break;

        case 66: //Tombol 7
        if (A == 0) {
          A = 7;
          lcd.clear();
          lcd.print("7");
        } else {
          B = 7;
          lcd.clear();
          lcd.print("7");
        } break;

        case 74: //Tombol 8
        if (A == 0) {
          A = 8;
          lcd.clear();
          lcd.print("8");
        } else {
          B = 8;
          lcd.clear();
          lcd.print("8");
        } break;

        case 82: //Tombol 9
        if (A == 0) {
          A = 9;
          lcd.clear();
          lcd.print("9");
        } else {
          B = 9;
          lcd.clear();
          lcd.print("9");
        } break;
      case 176:
      if (A == 0) {
    Result = 0;
    A = 0;
    B = 0;
    hasil = 0;
  }
      }
      receiver.resume();
  }
}