Variables

Variables in Kotlin

Kotlin has two kinds of variables:

• val — immutable (read-only), like const in other languages
• var — mutable, can be reassigned

val name = "Alice"   // cannot be changed
var score = 0        // can be changed
score = 100

Kotlin infers types automatically, so you rarely need to write them explicitly:

val age: Int = 25    // explicit type
val city = "Berlin"  // inferred as String

Your Turn

Create a val named language with the value "Kotlin", then create a var named version starting at 1, reassign it to 2, and print both.