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// Hello, Swift import Foundation let name = "Swift" print("Hello, \(name)!") // Constants and variables let pi = 3.14159 // constant - cannot change var counter = 0 // variable - can change counter += 1 // Type annotations let greeting: String = "Hello" var score: Int = 100 var temperature: Double = 98.6 var isActive: Bool = true // String interpolation let message = "Score: \(score), Active: \(isActive)" print(message) // Multi-line strings let poem = """ Roses are red, Violets are blue, Swift is great, And so are you. """ print(poem)
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