// Test string operations and interpolation
println("Testing string operations...")
let name = "Alice"
let age = 30
// String interpolation
let greeting = f"Hello, {name}! You are {age} years old."
println(greeting)
// String methods
let text = " Hello World "
println(text.trim())
println(text.to_upper())
println(text.to_lower())
// String concatenation
let first = "Hello"
let second = "World"
let combined = first + " " + second
println(combined)
// String length
let sample = "Ruchy"
println(f"Length of '{sample}': {sample.len()}")
println("String tests completed!")