What is the output of this Swift code?

medium📝 Predict Output Q13 of 15

Swift - Data Types

let a: Int = 7
let b: Double = 3.5
let c = Double(a) + b
print(c)

A10.5

B10

C7.0

DError: Cannot add Int and Double

Step-by-Step Solution

Solution:

Step 1: Convert Int to Double explicitly
a is Int 7, converted to Double 7.0 using Double(a).
Step 2: Add converted Double and b
Adding 7.0 + 3.5 results in 10.5.
Final Answer:
10.5 -> Option A
Quick Check:
7.0 + 3.5 = 10.5 [OK]

Quick Trick: Convert Int to Double before adding [OK]

Common Mistakes:

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