Question

Suppose a website impose the following rules for passwords. 1. A password must have at least eight characters. 2. A password consists of only letters and digits. 3. A password must contain at least two digits. Write a program that prompts the user to enter a password. If the user enters a invalid password, the program needs to tell the user why it is invalid and ask the user to enter another password. The program should stop only when the user enters a valid password. Here is one sample run to check these 4 passwords in order (My password18 ? pass18 ? password ? Mypassword18): Enter a new password: My password18 Invalid: Only letters and digits Enter a new password: pass18 Invalid: Too Few Characters (8 at least) Enter a new password: password Invalid: At least two digits Enter a new password: Mypassword18 Valid password!

          Suppose a website impose the following rules for passwords.
1. A password must have at least eight characters.
2. A password consists of only letters and digits.
3. A password must contain at least two digits.
Write a program that prompts the user to enter a password. If the user enters a invalid
password, the program needs to tell the user why it is invalid and ask the user to enter
another password. The program should stop only when the user enters a valid password.
Here is one sample run to check these 4 passwords in order
(My password18 ? pass18 ? password ? Mypassword18):
Enter a new password: My password18
Invalid: Only letters and digits
Enter a new password: pass18
Invalid: Too Few Characters (8 at least)
Enter a new password: password
Invalid: At least two digits
Enter a new password: Mypassword18
Valid password!

Suppose a website impose the following rules for passwords.
1. A password must have at least eight characters.
2. A password consists of only letters and digits.
3. A password must contain at least two digits.
Write a program that prompts the user to enter a password. If the user enters a invalid
password, the program needs to tell the user why it is invalid and ask the user to enter
another password. The program should stop only when the user enters a valid password.
Here is one sample run to check these 4 passwords in order
(My password18 ? pass18 ? password ? Mypassword18):
Enter a new password: My password18
Invalid: Only letters and digits
Enter a new password: pass18
Invalid: Too Few Characters (8 at least)
Enter a new password: password
Invalid: At least two digits
Enter a new password: Mypassword18
Valid password!

Added by Richard B.

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