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Test: Swift - Boolean Types
2. Which of the following can be assigned to a bool variable in Objective-C to make it true?
Results Congratulations! Correct Answer. You Answered: None. If you took the test, your answer will show up here. Correct Answer: 1; True; YES; 100; Explanation In Objective-C, boolean false is 0 and true is non-zero. YES and True are #defined to 1 in various header files and hence they act as true. When checked in an if control statement, a variable with any of the above values will test positive.Take the Test Take the complete test on this topic. You will be able to review answers to questions and get a test score.
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Test is Based on this Article
This article discusses the boolean types in Swift and contrasts with how these types are used in C and Objective-C.
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Test on Boolean Types in Swift.
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