Computer Science for IGCSE & O level - Algorithm Design And Problem Solving (Section 9 - No. 30)
What are some possible ways to verify that a user's email address has been entered correctly?
A format check to ensure it matches the correct structure.
A type check to confirm that the input is a string.
A presence check to ensure the field is filled.
A screen check to compare input against a second input
Giải thích
The listed choices are all valid ways to verify an email address.