//
// Calculate the volume of a cube in Swift.
// --------------------------------------------------
// A cube has equal side lengths. If each side has length "side",
// the volume is:
//
// volume = side³
//
// Swift does not have a built‑in exponent operator for integers,
// but for simple integer powers like 3, multiplication is idiomatic.
//
import Foundation
/// Computes the volume of a cube.
/// - Parameter side: The length of one side of the cube (must be non‑negative).
/// - Returns: The cube's volume as a Double.
func cubeVolume(side: Double) -> Double {
precondition(side >= 0, "Side length must be non‑negative")
// Swift's most idiomatic way to compute side³ is simply:
return side * side * side
}
let side = 15.0
print("Side length: \(side)")
print("Volume of cube: \(cubeVolume(side: side))")
/*
run:
Side length: 15.0
Volume of cube: 3375.0
*/
