[Solved] Consider this Swift code snippet:var a = 8 let b = a a = 15 print(b)What will be printed and why? — Ans: 8, because b captures the value of a at assignment | iOS Swift

iOS Swift - Swift Language Essentials

Consider this Swift code snippet:

var a = 8
let b = a
a = 15
print(b)

What will be printed and why?

A8, because b captures the value of a at assignment

B15, because b reflects the updated value of a

CError: Cannot assign to constant b

Dnil, because b is not initialized properly

Step-by-Step Solution

Solution:

Step 1: Variable and constant declaration
a is a variable initialized to 8, b is a constant assigned the current value of a.
Step 2: Reassignment of a
a is changed to 15, but b remains unchanged because it holds a copy of the original value.
Step 3: Print statement
Printing b outputs 8, the value it was assigned at declaration.
Final Answer:
8, because b captures the value of a at assignment -> Option A
Quick Check:
Constants hold the value at assignment, not a reference [OK]

Quick Trick: Constants copy value at assignment, not updated later [OK]

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