Go pointer

package main

import "fmt"

func main() {

    i, j := 42, 49

    p := &i // Set 'p' points to 'i'
    fmt.Println(*p) // Print 'i'
    *p = 21 // Set 'i' through the pointer 'p'
    fmt.Println(*p)
    fmt.Println(i)
    fmt.Println("---")

    p = &j // Set 'p' points to 'j'
    fmt.Println(*p)
    *p = *p / 7 // Device 'j' through the pointer 'p'
    fmt.Println(*p)
    fmt.Println(j)
}

Outputs:

42
21
21
---
49
7
7