#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
int number;
int sw = 11,state;
void setup() {
  lcd.init(); //lcd,begin()
  pinMode(sw, INPUT_PULLUP);
}
void loop() {
  state = digitalRead(sw);
  while(state ==0)
  {
    state = digitalRead(sw);
  }
  lcd.setCursor(0,0);
  lcd.print("random number");

  lcd.setCursor(8,1);
  number = random(0,99);
  if(number <10)
   lcd.print("0");
    lcd.print(number);
  delay(500);

}