/***********************************
    Program Tes Operator Relasional
    BY Fachri [X RPL 3]
***********************************/

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

int tombol_kanan;
int tombol_kiri;
int nilai = 0;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(">.<MY PROJECT>.<");
  lcd.setCursor(0,1);
  lcd.print("OPERATOR RELASI");
  delay(1000);
  lcd.clear();
  pinMode(3, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);
}

void loop() {
  lcd.setCursor(0,0);
  lcd.print("Nilai = ");
  lcd.print(nilai);
  lcd.print("    ");

  tombol_kanan = digitalRead(3);
  tombol_kiri = digitalRead(4);

  if(tombol_kanan == 0){
    nilai = nilai + 5;
  }
  if(tombol_kiri == 0){
    nilai = nilai - 5;
  }
  if(nilai == 10){
    lcd.setCursor(0,1);
    lcd.print("OPERATOR ==");
  }
  else if (nilai < 10){
    lcd.setCursor(0,1);
    lcd.print("OPERATOR <     ");
  }
   else if (nilai > 10){
    lcd.setCursor(0,1);
    lcd.print("OPERATOR >     ");
   }
}