Pointers in Go. Short tale of asterisk and ampersand.

pointers.go

package main

import "fmt"

func main() {
	var a int
	var b int
	var c *int

	a = 42
	b = a
	c = &a

	fmt.Printf("Values:\n a = %v\n b = %v\n c = %v\n*c = %v\n", a, b, c, *c)

	a = 21

	fmt.Printf("Values:\n a = %v\n b = %v\n c = %v\n*c = %v\n", a, b, c, *c)
	fmt.Printf("Types:\n a:  %T\n b:  %T\n c: %T\n*c:  %T\n", a, b, c, *c)
}