[Solved] Find the problem in this Swift code:func printName(_ name: String?) { print(name!) } printName(nil) — Ans: Force unwrapping nil causes runtime crash | Swift

Swift - Optionals

Find the problem in this Swift code:

func printName(_ name: String?) {
    print(name!)
}
printName(nil)

AFunction parameter cannot be optional

BForce unwrapping nil causes runtime crash

Cprint statement syntax is wrong

DNo problem, prints nil

Step-by-Step Solution

Solution:

Step 1: Understand parameter type
The function accepts an optional string which can be nil.
Step 2: Force unwrap inside function
Force unwrapping nil inside print causes a runtime crash.
Final Answer:
Force unwrapping nil causes runtime crash -> Option B
Quick Check:
Force unwrap nil in function = crash [OK]

Quick Trick: Never force unwrap parameters without nil check [OK]

Common Mistakes:

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