#include <LiquidCrystal_I2C.h>
#define COLS 16
#define ROWS 2

LiquidCrystal_I2C lcd(0x27, 16, 2);

void lcdCenterPrint(const String text, const byte row = 1)
{
  if(row <= ROWS && text.length() <= COLS)
  {
    lcd.setCursor((COLS - text.length()) / 2, row - 1);
    lcd.print(text); 
  }
  else lcdCenterPrint("Error!", row);
}

void setup()
{
  lcd.begin(16, 2);
  lcd.backlight();
  //lcd.setCursor(1, 0);
  //lcd.print("Hello, Everyone");
  //lcd.setCursor(2, 1);
  //lcd.print("It's a Test!");
  lcdCenterPrint("Hello, World!ffffffffffffffffffffff");
  lcdCenterPrint("Hello, World!", 2);
}

void loop() 
{

}