package main

import (

    "fmt"

)

func main() {

    var a = "hello world"

    var data =

    var data1 = 1.1

    fmt.Println(a)

    fmt.Printf("%b\n", data)

    fmt.Printf("%d\n", data)

    fmt.Printf("%x\n", data)

    fmt.Printf("%f\n", data1)

}