[Solved] What will be the output of this Swift code?func greet(_ name: String?) { guard let name = name else { print("No name provided") return } print("Hello, \(name)!") } greet(nil) greet("Anna") | Swift

Swift - Control Flow

What will be the output of this Swift code?

func greet(_ name: String?) {
    guard let name = name else {
        print("No name provided")
        return
    }
    print("Hello, \(name)!")
}
greet(nil)
greet("Anna")

ANo output

BHello, nil!\nHello, Anna!

CHello, Anna!\nNo name provided

DNo name provided\nHello, Anna!

Step-by-Step Solution

Solution:

Step 1: Analyze guard behavior with nil input
When name is nil, the guard fails, prints "No name provided", and returns early.
Step 2: Analyze guard behavior with non-nil input
When name is "Anna", guard passes and prints "Hello, Anna!".
Final Answer:
No name provided\nHello, Anna! -> Option D
Quick Check:
Guard unwraps optional or exits early [OK]

Quick Trick: Guard unwraps optionals or exits early with else [OK]

Common Mistakes:

Assuming guard prints 'Hello, nil!'
Ignoring early return on guard failure
Mixing output order

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What will be the output of this Swift code?

Step 1: Analyze guard behavior with nil input

Step 2: Analyze guard behavior with non-nil input

Final Answer:

Quick Check:

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