package main import "fmt" func main() { fmt.Println("Hello, world!") } Run directly $ go run hello.go Hello, world! Or try it out in the Go repl var s1 string s1 = "Learn Go!" // declare multiple variables at once var b, c int = 1, 2 var d = true Short declaration s1 := "Learn Go!" // string b, c := 1, 2 // int d := true // bool See: Basic types