Which of the following are valid identifiers?
i. R3D3 ii. per-capita iii. phone#
iv. ice_cream v. 92_aardvarks
a. i, ii, iv, v
b. i, iv
c. i, ii
d. ii, iv, v
e. All are valid.
b. i, iv
Computer Science & Information Technology
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A. The user never has to change the password. B. The user can use a blank password. C. The user has to change the password every day. D. The user account is disabled.
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Answer the following questions true (T) or false (F)
1. Downcasting causes the slicing problem. 2. In C++, a virtual destructor is invoked whenever a virtual constructor was used to create the object.
Computer Science & Information Technology