package main

import "fmt"

func main()  {
	var arr [4]int
	arr1 := [3]int{1, 2, 3}
	arr2 := [...]int{5, 6}	// 个数不确定
	arr3 := [3][5]int{		// 3和5分别代表行，列
		{1, 3, 4, 4, 4},
		{1, 3, 4, 4, 4},
		{1, 3, 4, 4, 4},
	}

	fmt.Println(arr, arr1, arr2, arr3) // [0 0 0 0] [1 2 3] [5 6] [[1 3 4 4 4] [1 3 4 4 4] [1 3 4 4 4]]
}