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Swift MCQs

The example below defines two variables, movieCount and songCount, which count the number of Movie and Song instances in the library array?

var movieCount = 0 var songCount = 0 for item in library { if item is Movie { ++movieCount }else if item is Song { ++songCount } } println("Media library contains \(movieCount) movies and \ (songCount) songs")

var movieCount = 0 var songCount = 0 for item in library { if item is Movie { ++movieCount }else if item is Song { ++songCount } }

var movieCount = 0 var songCount = 0 for let in library { if let is Movie { ++movieCount }else if item is Song { ++songCount } } println("Media library contains \(movieCount) movies and \ (songCount) songs")

All of the above

Answer

Correct Answer: var movieCount = 0 var songCount = 0 for item in library { if item is Movie { ++movieCount }else if item is Song { ++songCount } } println("Media library contains \(movieCount) movies and \ (songCount) songs")

Explanation:

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