helloweb.go

package main

import (
	"io"
	"log"
	"net/http"
)

func hello(w http.ResponseWriter, r *http.Request) {
	io.WriteString(w, "hello")
}

func main() {
	http.HandleFunc("/", hello)
	if err := http.ListenAndServe(":8000", nil); err != nil {
		log.Fatal(err)
	}
}