Write a C# program that inputs a security passcode to unlock a high-clearance server room and checks if it is valid.

Your program should work as follows:

• Input a passcode from the user and store it in a suitable variable.
• If the passcode entered is equal to VAULT99, display the message Access granted.
• If the passcode entered is not equal to VAULT99, display the message Access denied.

You should use meaningful variable name(s), correct syntax, and indentation in your answer.