Where are initializers used in Swift?

What will be the output of the following lines of code?

Which one of the following is the overflow addition operator?

How many deinitializers can a class in Swift have?

What are convenience initializers in Swift?

What are attributes used for in Swift?

Which of the following does a protocol define in Swift?

Where should we provide values to constant properties in classes or structures in Swift?

What is the main purpose of protocol composition in Swift?

Which of the following statements about opaque types in Swift is true?