substack-for-loops-5.go

package main

import (
	"fmt"
	"sync"
	"time"
)

func printVal(n *int, wg *sync.WaitGroup) {
	defer wg.Done()
	fmt.Println(*n)
}

func main() {
	var wg sync.WaitGroup

	for i := 0; i < 5; i++ {
		wg.Add(1)
		// Create a new variable inside the loop
		val := i
		go printVal(&val, &wg)
	}

	wg.Wait()
}