Functions in Go

    package main
    import "fmt"

    func plus(a int, b int) int {
        return a + b
    }

    func plusPlus(a, b, c int) int {
        return a + b + c
    }

    func main() {
        res := plus(1, 2)
        fmt.Println("1+2 =", res)
        res = plusPlus(1, 2, 3)
        fmt.Println("1+2+3 =", res)
    }

    package main
    import "fmt"
    The (int, int) in this function signature shows that the function returns 2 ints.

    func sumAndMultiply() (x int, y int) {
        return x+y, x*y
    }
    func main() {
        s, m := vals()
        fmt.Println(s)
        fmt.Println(m)
    
        //If you only want a subset of the returned values, use the blank identifier _.
        _, c := vals()
        fmt.Println(c)
    }