How to Setup LCD 16*2 with Arduino | LCD not displaying text

1// Electronics University
2// SUBSCRIBE US
3
4#include <LiquidCrystal.h>
5
6//  initialize the library by associating any needed LCD interface pin
7// with the  arduino pin number it is connected to
8
9LiquidCrystal lcd(7,8,9,10,11,12);
10
11void  setup() {
12  // set up the LCD's number of columns and rows:
13  lcd.begin(16,  2);
14  // Print a message to the LCD.
15  lcd.print("Yeh!U learned it");
16}
17
18void  loop() {
19  // set the cursor to column 0, line 1
20  // (note: line 1 is the  second row, since counting begins with 0):
21  lcd.setCursor(0, 1);
22  lcd.print  ("SUBSCRIBE US");
23}
24

1// Electronics University
2// SUBSCRIBE US
3
4#include <LiquidCrystal.h>
5
6//
7  initialize the library by associating any needed LCD interface pin
8// with the
9  arduino pin number it is connected to
10
11LiquidCrystal lcd(7,8,9,10,11,12);
12
13void
14  setup() {
15  // set up the LCD's number of columns and rows:
16  lcd.begin(16,
17  2);
18  // Print a message to the LCD.
19  lcd.print("Yeh!U learned it");
20}
21
22void
23  loop() {
24  // set the cursor to column 0, line 1
25  // (note: line 1 is the
26  second row, since counting begins with 0):
27  lcd.setCursor(0, 1);
28  lcd.print
29  ("SUBSCRIBE US");
30}
31