Kotlin Function: Print message without return

Last update on February 04 2025 08:17:24 (UTC/GMT +8 hours)

Write a Kotlin function that prints a message and does not return anything.

Pre-Knowledge (Before you start!)

• Basic Kotlin Syntax.
• Kotlin Functions.
• Unit Type.
• Printing Output.

Hints (Try before looking at the solution!)

• Define the Function.
• Print the Message.
• No Return Value.
• Call the Function.
• Test with Different Messages.
• Common Errors to Avoid:
  • Forgetting function parameters.
  • Misplacing println().
  • Unnecessarily adding a return statement.

Sample Solution:

Kotlin Code:

fun printMessage(message: String) {
    println(message)
}
fun main() {
    printMessage("Hello, world!")
}

Sample Output:

Hello, world!

Explanation:

The "printMessage()" function takes a parameter message of type String. Inside the function, it prints the message using the println function.

In the main function, we call the "printMessage()" function and provide the message "Hello, world!" as an argument. The function prints the message to the console.

Since the "printMessage()" function does not return any value (unit-returning function), its return type is Unit, which is the default return type for functions that do not specify a return type explicitly.

Kotlin Editor:

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