// Use 'fun' keyword to declare function
// 'num' is the parameter and is of type Int
// The ':Int' indicates the return type
fun square(num: Int):Int {
return num * num
}fun main(args: Array<String>) {
var number = 5.5
print("Result = ${Math.sqrt(number)}")
}callme()fun callMe() {
println("Printing from callMe() function.")
println("This is cool (still printing from inside).")
}
fun main(args: Array<String>) {
callMe()
println("Printing outside from callMe() function.")
}kotlin function