/*

 1). LCD pins:  
(1,3,5,16)th pins to ground, 
3rd pin through Registor
         
   2).(2,15)th  to 5V(Vcc)
   3).(RS,E, D4,D5,D6,D7): 
    to Arduino Digital pins
*/
#include<LiquidCrystal.h>
// including the Library (LiquidCrystal) for LCD  

const int rs=12, en =11, d4 = 5, d5 =4,d6 =3, d7=2;// 
// assigning a variable name to each pins connected to Arduino
// Methods: DataType(int for integer type variable)variableName = pin no.;
LiquidCrystal lcd(rs,en,d4,d5,d6,d7);
// Library  variableName(name of device_pins which is conected to Arduino)

void setup() {
Serial.begin(9600);
lcd.begin(16,2);// LCD type: 16 column and 2 rows
}

void loop() {
lcd.setCursor(8,0);//(Column index , row index)
//setCursor(1,0) is a Library Function,where we passing the arguments 1,0
lcd.print("Hello World");

lcd.setCursor(0,0);
lcd.print("Welcome");
lcd.scrollDisplayLeft();
delay(300);
//scrollDisplayLeft() is a Library Function

}