[Solved] What will be the output of this Swift code?var score = 5 score = 10 let score = 15 print(score) — Ans: Compilation error | Swift

Swift - Variables and Constants

What will be the output of this Swift code?

var score = 5
score = 10
let score = 15
print(score)

A5

BCompilation error

C15

D10

Step-by-Step Solution

Solution:

Step 1: Review variable shadowing rules
Declaring let score after var score in the same scope is not allowed.
Step 2: Check for compile errors
Swift does not allow redeclaration of variables with the same name in the same scope, causing a compile error.
Final Answer:
Compilation error -> Option B
Quick Check:
Redeclaring variable in same scope = compile error [OK]

Quick Trick: Redeclaring variables in same scope causes compile errors [OK]

Common Mistakes:

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