[Solved] Consider this code snippet:var age: Int? = nil print(age!)What is the problem and how to fix it? — Ans: Runtime crash due to force unwrapping nil; fix by optional binding. | Swift

Swift - Optionals

Consider this code snippet:

var age: Int? = nil
print(age!)

What is the problem and how to fix it?

ANo problem; prints nil safely.

BSyntax error; fix by removing !.

CPrints 0; fix by initializing age to 0.

DRuntime crash due to force unwrapping nil; fix by optional binding.

Step-by-Step Solution

Solution:

Step 1: Identify the cause of crash
Force unwrapping age! when age is nil causes a runtime crash.
Step 2: Fix using optional binding
Use if let or guard let to safely unwrap before printing.
Final Answer:
Runtime crash due to force unwrapping nil; fix by optional binding. -> Option D
Quick Check:
Force unwrap nil = crash; use safe unwrap [OK]

Quick Trick: Never force unwrap nil; use if let or guard let [OK]

Common Mistakes:

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