pointer_concurrency

package main

import (
	"fmt"
)

var counter *int

func increment() {
	for i := 0; i < 1000; i++ {
		*counter++
	}
}

func subtract() {
	*counter -= 10
}

func main() {
	a := 10
	counter = &a

	go increment()
	fmt.Println("increment value:", *counter)

	go subtract()
	fmt.Println("subtract value:", *counter)

	fmt.Println("Final counter value:", *counter)
}