What is the output of the following Swift code?

medium📝 Predict Output Q4 of 15

Swift - Data Types

let x = false
let y = true
print(x || !y && y)

Afalse

Btrue

CCompilation error

Dnil

Step-by-Step Solution

Solution:

Step 1: Evaluate the NOT operator
!y means !true which is false.
Step 2: Evaluate the AND operator
!y && y becomes false && true which is false.
Step 3: Evaluate the OR operator
x || (result) becomes false || false which is false.
Final Answer:
false -> Option A
Quick Check:
Operator precedence and NOT evaluation = false [OK]

Quick Trick: Remember ! has highest precedence, then &&, then || [OK]

Common Mistakes:

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