[Solved] Identify the error in this Swift code using guard:func greet(name: String?) { guard name != nil else { print("No name provided") } print("Hello, \(name!)") } | Swift

Swift - Control Flow

Identify the error in this Swift code using guard:

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

AIncorrect use of optional binding in guard

BMissing return or exit after guard else block

CUsing force unwrap (!) inside print

DGuard condition should be inside parentheses

Step-by-Step Solution

Solution:

Step 1: Understand guard requirements
The else block of a guard must exit the current scope (return, break, continue, or throw).
Step 2: Check the code
The else block prints a message but does not return or exit, so the function continues and force unwraps a nil value, causing a runtime error.
Final Answer:
Missing return or exit after guard else block -> Option B
Quick Check:
Guard else must exit scope [OK]

Quick Trick: Always exit after guard else block (return, throw, etc.) [OK]

Common Mistakes:

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