Go - 二级指针

package main



import "fmt"



func main() {

   var a int

   var ptr *int

   var pptr **int



   a = 3000



   /* take the address of var */

   ptr = &a



   /* take the address of ptr using address of operator & */

   pptr = &ptr



   /* take the value using pptr */

   fmt.Printf("Value of a = %d\n", a )

   fmt.Printf("Value available at *ptr = %d\n", *ptr )

   fmt.Printf("Value available at **pptr = %d\n", **pptr)

}