Question

21.which operator checks if two values are not equal in swift? a. != b. =! c. <> d. == 22.what is swiftui primarily used for? a. backend database programming b. user interface development c. hardware control d. server scripting 23.which function declaration is correct in swift? a. func greet(name: string) { print(name) } b. def greet(name) { print(name) } c. function greet(string name) { print(name) } d. void greet(string name) { print(name) }

Explanation:

• For question 21: In Swift, the "!=" operator is used to check if two values are not equal.
• For question 22: SwiftUI is a framework for building user interfaces in iOS, iPadOS, macOS, watchOS, and tvOS.
• For question 23: In Swift, function declarations start with the "func" keyword followed by the function name, parameters in parentheses with type annotations, and the function body in curly - braces.

Answer:

1. A. !=
2. B. User interface development
3. A. func greet(name: String) { print(name) }