Multiple return values

---

examples/function-multiple-return/multiple_return_function.go

package main

import "fmt"

func main() {
    fmt.Println("Hello World")
    a, b := calc(3, 2)
    fmt.Printf("%v and %v\n", a, b)
}

func calc(a, b int) (int, int) {
    return a + b, a - b
}

Hello World
5 and 1