// Add the Liquid Crystal I2C library
#include <LiquidCrystal_I2C.h>

// Add the lcd
LiquidCrystal_I2C lcd(0x27, 16, 2);
int ticket=0;
int k=2;
void setup() {
   // Initalise the LCD
   lcd.init();
   // Turn on the LCD backlight
   lcd.backlight();
   // Put text on the LCD
   //lcd.print("Hello World!");
   pinMode(k,INPUT_PULLUP);
   attachInterrupt(1,incrementer,FALLING);
}

void loop() {
  // No code needed for this part, you can put your code here if you want.
lcd.setCursor(3,0);
lcd.print("client");
lcd.setCursor(5,1);
lcd.print(ticket);


}

void incrementer() 
{
  ticket++;
}