How can a suspended function (suspend) be executed in Kotlin?

In Kotlin, a suspended function (suspend function) is called from a coroutine or another suspended function. You cannot call a suspend function directly from regular code.

Example of calling a suspend function:

import kotlinx.coroutines.*

suspend fun fetchData(): String {
    delay(1000) // simulate a long operation
    return "Data received"
}

fun main() = runBlocking {
    val result = fetchData() // calling suspend function inside a coroutine
    println(result)
}

Here, runBlocking starts a coroutine within which suspend functions can be called. In Android, lifecycleScope.launch or other CoroutineScope are usually used to call suspend functions.