package main import ( "./example" "fmt" ) func main() { // Call our gcd() function x := 42 y := 105 g := example.Gcd(x, y) fmt.Println("The gcd of", x, "and", y, "is", g) // Manipulate the Foo global variable // Output its current value fmt.Println("Foo =", example.GetFoo()) // Change its value example.SetFoo(3.1415926) // See if the change took effect fmt.Println("Foo =", example.GetFoo()) }