What will be printed by this Swift code?

medium📝 Predict Output Q4 of 15

Swift - Operators and Expressions

let minInt8: Int8 = -128
let result = minInt8 &- 1
print(result)

A-127

B-128

C127

DRuntime error

Step-by-Step Solution

Solution:

Step 1: Understand Int8 range
Int8 ranges from -128 to 127.
Step 2: Analyze the operation
Subtracting 1 from -128 with &- (overflow subtraction) wraps around to 127.
Final Answer:
127 -> Option C
Quick Check:
Underflow wraps to max Int8 value [OK]

Quick Trick: Underflow with &- wraps to max Int8 value [OK]

Common Mistakes:

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