How can you make a property optional in Swift? - Swift Quiz

Swift - Quiz(MCQ)

How can you make a property optional in Swift?

A)

You have to declare a question mark ? in the code to make a property optional

B)

You have to declare a question mark & in the code to make a property optional

C)

You have to declare a question mark ?? in the code to make a property optional

D)

None of the above

Correct Answer : You have to declare a question mark ?? in the code to make a property optional

Explanation : We have to declare a question mark ?? in the code to make a property optional. If a property doesn't have a value, then the symbol ? helps to avoid the runtime error.

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C)

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