#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
  lcd.init();
  lcd.backlight();
}

void loop() {
  int val = analogRead(A0);
  int printVal = map(val, 0, 1023, 0, 100);
  lcd.setCursor(0,0);
  lcd.print(printVal);
}