#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
int k,k1,c;
void setup() {lcd.init();
lcd.init();pinMode(3, INPUT_PULLUP);
pinMode(2, INPUT_PULLUP);}
void loop() 
{lcd.backlight();
lcd.setCursor(3,0);
lcd.print(k1);
k=digitalRead(2);c=digitalRead(3);
if(k==0){k1++;delay(250);}
if(c==0)(k1=0,lcd.clear());}