Values, Variables, and Types

In Scala, you can declare values and variables. Values are immutable (cannot be changed), while variables are mutable (can be changed).

// Declaring a value
val x: Int = 10

// Declaring a variable
var y: String = "Hello"

// Type inference
val z = 3.14 // Scala infers that z is a Double

Basic Data Types

Scala has several built-in data types, including:

• Int: For integers (e.g., 1, -5, 1000)
• Double: For floating-point numbers (e.g., 3.14, -2.5)
• Boolean: For true/false values
• String: For text

Basic Operations and Expressions

Scala supports standard arithmetic and logical operations.

val sum = 5 + 3
val product = 4 * 2.5
val isEqual = (5 == 5)

String Interpolation

String interpolation allows you to embed variables directly into strings.

val name = "Alice"
val greeting = s"Hello, $name!"

Console Input/Output

You can print to the console using println and read input using scala.io.StdIn.readLine.

println("Enter your name:")
val input = scala.io.