pointer.go

package main

import "fmt"

func zero(xPtr *int) {
  *xPtr = 0
}

func one(xPtr *int) {
  *xPtr = 1
}

func main() {
  x := 5
  zero(&x)
  fmt.Println(x)

	xPtr := new(int)
  one(xPtr)
  fmt.Println(*xPtr)
}