Write a script that prompts the user for a correct pass code or 0 to exit the program. The script then checks the entered number, if it is zero, it ends the program with a 'Goodbye!' message. If the entered number is not zero, the script compares it with the number 4444 (the correct pass Code). If the number is correct, the script displays a 'Welcome!' message and exits the program, otherwise, it repeats the same message until the user enters either 0 or 4444.