20 Golang数组指针VS指针数组

20 数组指针VS指针数组

package main

import (
	"fmt"
)

func main() {
	var a = [3]int{1, 1, 1} // 数组

	var i, j ,k int = 2, 2, 2
	var c [3] * int = [3]* int {&i, &j, &k} // 指针数组，这是一个数组，里面存的都是指针
	var d * [3] int = &a  	// 数组指针，这是一个指针，指向一个 [3]int 类型的数组
	// 必须制定数组长度否则会 => cannot use &a (type *[3]int) as type *[]int in assignment
	
	var e ** [3] int = &d  	// 数组指针的指针，指向一个 [3]int 类型的数组指针
	
	fmt.Println("c[0] =", c[0], "c[1] =", c[1],"c[2] =", c[2])
	fmt.Println("*c[0] =", *c[0], "*c[1] =", *c[1],"*c[2] =", *c[2])
	
	fmt.Println("d =", d)
	fmt.Println("*d =", *d)
	fmt.Println("d[0] =", d[0], "d[1] =", d[1],"d[2] =", d[2])
	fmt.Println("(*d)[0] =", (*d)[0], "(*d)[1] =", (*d)[1],"(*d)[2] =", (*d)[2])


	fmt.Println("e =", e)
	fmt.Println("*e =", *e)
	fmt.Println("**e =", **e)
}