Explain the differences between using launch and asynchronous functions with await in the context of asynchronous programming.

In Kotlin Coroutines, launch and asynchronous functions with await serve different purposes, although both are related to asynchronous execution.

• launch starts a new coroutine that runs concurrently with the rest of the code and does not return a result directly. This is useful for background tasks where you do not need to wait for the result.

• Asynchronous functions with async return a Deferred — a deferred result that can be obtained using await. await suspends the execution of the current coroutine until the result is available.

Example:

// Launching a background task without waiting for the result
launch {
    doBackgroundWork()
}

// Launching a task with waiting for the result
val deferred = async {
    computeSomething()
}
val result = deferred.await() // wait for completion and get the result

Thus, launch is used to start tasks without needing to get the result, while async + await are used when you need to obtain the result of an asynchronous operation.