I'm Confused DS1307 & LCD

Right, sorry:

#include <LiquidCrystal.h>
#include <WProgram.h>
#include <Wire.h>
#include <DS1307.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

int Hr=0;
int Mn=0;
int Sc=0;
int DD=0;
int MM=0;
int YY=0;
char buffer[6];

void setup() {
  lcd.begin(16, 2);
}

void loop() {

  Hr=RTC.get(DS1307_HR,true);
  Mn=RTC.get(DS1307_MIN,false);
  Sc=RTC.get(DS1307_SEC,false);
  DD=RTC.get(DS1307_DATE,false);
  MM=RTC.get(DS1307_MTH,false);
  YY=RTC.get(DS1307_YR,false);

  lcd.clear();

  sprintf(buffer, "%d", Sc);
  lcd.print(buffer);  

  delay(1000);

}