package main

import "fmt"

func main() {

  a, b := 5, 10
  swap(&a, &b)
  fmt.Println(a == 10, b == 5)

}

func swap(a *int, b *int) {

  //  temp := a
  //  *a, *b = *b, *temp

  *a, *b = *b, *a

}