Gorutine sync and change slice

slices.go

package main

import (
	"fmt"
	"sync"
)

func test(n int, s []int, w *sync.WaitGroup) {
	fmt.Println("start ", n)
	for k, v := range s {
		s[k] = v * 10
		fmt.Println("worker ", n, "slice: ", k, v)

	}
	w.Done()

}

func main() {

	var wg sync.WaitGroup

	s := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}

	fmt.Printf("Address of array = %v: %p\n", s, &s)

	p1 := 0
	p2 := p1 + 2

	for k, _ := range [8]int{} {
		wg.Add(1)
		go test(k, s[p1:p2], &wg)
		p1 = p2
		p2 = p1 + 2
	}

	wg.Wait()

	fmt.Printf("Address of array = %v: %p\n", s, &s)
}