String Templates in Kotlin

// String templates
val name = "Alice"
val age = 30
val message = "Hello, $name! You are $age years old."
val expression = "Next year you'll be ${age + 1}"

// Multiline strings
val multiline = """
    |First line
    |Second line
    |Third line
    """.trimMargin()

val rawString = """
    No escaping needed: 
 	 \
    Preserves formatting
"""

// String operations
val str = "Kotlin"
println(str.length)  // 6
println(str.uppercase())  // KOTLIN
println(str[0])  // K
println(str.substring(0, 3))  // Kot