kotlin_fundamentals_2.kt

fun main() {
    runBlocking {
        val coroutineX = GlobalScope.launch {
            val result1 = n1(5)
            println("Hello I'll print after n1 is over")
            println("Result1: $result1")
            val result2 = n2(5)
            println("Hello I'll print after n2 is over")
            println("Result2: $result2")
        }
        coroutineX.join()
    }
}

suspend fun n1(a: Int): Int {
    delay(500)
    return a
}

suspend fun n2(a: Int): Int {
    val coroutineY = GlobalScope.async (Dispatchers.IO) {
        // same as Thread.sleep() but for coroutines 
        delay(500)  
        return@async a*a
    }
    return coroutineY.await()
}

/* 
OUTPUT:
Hello I'll print after n1 is over
Result1: 5
Hello I'll print after n2 is over
Result2: 25
*/