Swift Variables

Variables are containers that store changeable data. Think of them as labeled boxes where you can put and update values anytime.

Use the keyword var when you want to store something that might change later.

var age = 25 
age = 26

If you want a value that never changes, use let instead.

let birthYear = 1997 
// birthYear = 1998 // ❌ Error – you can't change a constant

let makes the value fixed.

Swift is smart – it figures out the data type based on the value:

var name = "Alice"   // Swift knows this is a String 
Var score = 90       // Swift knows this is an Int

You can also explicitly define the type:

var city: String = "Paris" 
Var height: Double = 5.8

Here’s a quick look at what you can store in variables:

Watch these YouTube tutorials to understand GIT Tutorial visually:

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