[Solved] Identify the error in this Swift code snippet: var age: Int? age = nil print(age!) — Ans: Runtime error: force unwrapping nil | Swift

Swift - Optionals

Identify the error in this Swift code snippet:

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

ASyntax error: missing initialization

BNo error, prints nil

CRuntime error: force unwrapping nil

DCompile error: optional not declared

Step-by-Step Solution

Solution:

Step 1: Understand force unwrapping
Using ! on an optional tries to get its value directly.
Step 2: Check the value of age
Since age is nil, force unwrapping causes a runtime crash.
Final Answer:
Runtime error: force unwrapping nil -> Option C
Quick Check:
Force unwrap nil causes runtime error [OK]

Quick Trick: Never force unwrap optionals without checking nil first [OK]

Common Mistakes:

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