sn9.go

package main

import (
	"bytes"
	"fmt"
	"io"
	"strings"
)

func main() {
	// Create a reader
	r := strings.NewReader("Hello Medium")

	// Create a writer
	var b bytes.Buffer

	// Copy data
	_, err := io.Copy(&b, r) // Don't forget &

	if err != nil {
		panic(err)
	}
	// Optional: verify data
	fmt.Println(b.String())
}