String

A Char is a single character (for example: 1, 6, %, b, p, ., T, etc.)

The String type is a special type that consists of multiple Chars.

To initialize a string value in a variable, enclose it within double quotation marks:

fun main() {
    val s1 = "This is a string"
    val s2 = "This is also a string"
}

In the above example, two string values are initialized, named s1 and s2.

Note: In Kotlin, only double quotes " are used for Strings. Single quotes ' are used only for a single Char value:

fun main() {
    val letter: Char = 'A'      // single character
    val word: String = "Hello"  // string
}

String Templates:

Kotlin has a powerful feature called string templates using $. This lets you insert values directly inside a string:

fun main() {
    val name = "Alice"
    val age = 25
    println("My name is $name and I am $age years old.")
    // My name is Alice and I am 25 years old.
}

For expressions, use ${}:

fun main() {
    val a = 10
    val b = 5
    println("The sum is ${a + b}")  // The sum is 15
}