Computers and Technology, 11.04.2020 04:47 nick974
You have been asked to write a username validation program for a small website. The website has specific rules on what constitutes a valid username, including:
All usernames must be between 8 and 15 characters long
Usernames can only contain alphabetic (a-z and A-Z) and numeric characters (0-9) - no special characters are allowed.
The first character in a username cannot be a digit
Usernames must contain at least one uppercase character
Usernames must contain at least one lowercase character
Usernames must contain at least one numeric character
Write a program that asks the user to enter in a username and then examines that username to make sure it complies with the rules above. Here's a sample running of the program - note that you want to keep prompting the user until they supply you with a valid username:
a. Please enter a username: foo
Username must be between 8 and 15 characters.
b. Please enter a username: f
Username must be between 8 and 15 characters.
c. Please enter a username: foo ooo ooo
Username must contain only alphanumeric characters.
d. Please enter a username: f
Your username must contain at least one digit
e. Please enter a username: 1f
The first character in your username cannot be a digit
f. Please enter a username: f1
Your username must contain at least one uppercase character
g. Please enter a username: F1
Your username is valid!
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