no parameter printin kotlin code example

Example 1: return type in kotlin function

//Function having two Int parameters with Int return type
fun sum(a: Int, b: Int): Int {
    return a + b
}

Example 2: how to write a function in kotlin

// 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
}