FUNCTION, METHOD

// PROCEDURE
fun main() {
    sum(3, 5, 7)
    HayUni()
    triangle(6.0, 8.0)
    println("Sum-Minus " + SumMinus(2.0, 4.0, 8.0))
    println("Sum & Minus " + Sum_Minus(2.0, 4.0, 8.0))
    println("Kimi no Na wa (Your name): " + named())
}

// PROCEDURE
fun HayUni() {
    println("Hay Universe: Kotlin")
}

// FUNCTION (PARAMETER)
fun sum(a: Int, b: Int, c: Int) {
    var sum: Int = a + b + c
    println("Result : $sum")
}

fun triangle(x: Double, y: Double) {
    var result: Double = (x * y) / 2
    println("Triangle : $result")
}

// METHOD
fun SumMinus(j: Double, k: Double, l: Double): Double {
    return j + k - l
}

fun Sum_Minus(m: Double, n: Double, o: Double): Double {
    val resulted = m + n - o
    return resulted
}

// Function without parameter with return
fun named(): String {
    print("Your Name: ")
    val name = readLine()
    return name.toString()
}

/* FUNCTION 3:
*  1. Function without parameter (Procedure), example: main()
*  2. Function with parameter, example: sum(parameter). sum() is constructor
*  3. Function with return (method)
 */