// A function can take zero or more arguments.
// In this example, add takes two parameters of type int.
// Type comes after the variable name.

package main

import "fmt"

func add(x int, y int) int {
	return x + y
}

// Func add can be shortened:
func adds(x, y int) int {
	return x + y
}

// Multiple returns
func swap(x, y string) (x, y string) {
	return x, y
}

// Return values may be named.
// If so, they are treated as variables defined at the top of the function.
func split(sum int) (x, y int) {
	x = sum * 4 / 9
	y = sum - x
	return
}

func main() {
	fmt.Println(add(42, 13))
	a, b := swap("Hello", "world")
	fmt.Println(a, b)
	fmt.Println(split(17))
}