#include <LiquidCrystal.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
char input;
void setup(){
    Serial.begin(9600);
    lcd.begin(16,2);
    lcd.backlight();
    pinMode(5, OUTPUT);
}
void loop(){

    Serial.print("\nInput (1,0,x) : "); 
    while(!Serial.available()){} Serial.flush();
    input=Serial.read();
    Serial.print(input);
    
    if(input=='1'){
      lcd.clear(); // when clear the lcd, default setCursor to (0,0)
      lcd.setCursor(2,0);
      digitalWrite(5,1);
      lcd.print("Turn ON Led5");
    }else if(input=='0'){
      lcd.clear();
      lcd.setCursor(2,0);
      digitalWrite(5,0);
      lcd.print("Turn OFF Led5");
    }else if(input=='x'){
      lcd.clear();
      digitalWrite(5,0);
      lcd.print("Exit Propgram!!!");
      delay(3000);
      lcd.noDisplay();
      lcd.noBacklight();
      while(true){}  // do nothing , to prevent program for more input
    }
    
}