memCopy.go

func printData(c chan *int) {
   time.Sleep(time.Second * 3)
   data := <-c
   fmt.Println("Data in channel is: ", *data)
}
 
func main() {
   fmt.Println("Main started...")
   var a = 10
   b := &a
   //create channel
   c := make(chan *int)
   go printData(c)
   fmt.Println("Value of b before putting into channel", *b)
   c <- b
   a = 20
   fmt.Println("Updated value of a:", a)
   fmt.Println("Updated value of b:", *b)
   time.Sleep(time.Second * 2)
   fmt.Println("Main ended...")
}