#include <LiquidCrystal.h>
LiquidCrystal lcd(13,12,11,10,9,8);

int arr[] = {7,6,5,4,3,2,1,0};
void setup() {
  lcd.begin(16,2);

  for(int i=0;i<8;i++)
  {
    pinMode(arr[i], INPUT_PULLUP);
  }
  

}

void loop() {
  
  for(int i=7; i>-1; i--)
  {

    if(digitalRead(arr[i]) == LOW) {
    {
        lcd.setCursor(i,0);
        lcd.print("X");
        lcd.setCursor(i,1);
        lcd.print(" ");
    }
    }

    else if(digitalRead(arr[i]) == HIGH) {
      lcd.setCursor(i,1);
      lcd.print("X");
      lcd.setCursor(i,0);
      lcd.print(" ");
    }

  }


}