package main    
    import (    
        "fmt"    
    )    
    func main() {    
        //一维数组    
        var arr_1 [5] int    
        fmt.Println(arr_1)    
        var arr_2 =  [5] int {1, 2, 3, 4, 5}    
        fmt.Println(arr_2)    
        arr_3 := [5] int {1, 2, 3, 4, 5}    
        fmt.Println(arr_3)    
        arr_4 := [...] int {1, 2, 3, 4, 5, 6}    
        fmt.Println(arr_4)    
        arr_5 := [5] int {0:3, 1:5, 4:6}    
        fmt.Println(arr_5)    
        //二维数组    
        var arr_6 = [3][5] int {{1, 2, 3, 4, 5}, {9, 8, 7, 6, 5}, {3, 4, 5, 6, 7}}    
        fmt.Println(arr_6)    
        arr_7 :=  [3][5] int {{1, 2, 3, 4, 5}, {9, 8, 7, 6, 5}, {3, 4, 5, 6, 7}}    
        fmt.Println(arr_7)    
        arr_8 :=  [...][5] int {{1, 2, 3, 4, 5}, {9, 8, 7, 6, 5}, {0:3, 1:5, 4:6}}    
        fmt.Println(arr_8)    
    }

    var arr_1 = [5] int {1, 2, 3, 4, 5}    
    arr_1[5] = 6    
    fmt.Println(arr_1)

invalid array index 5 (out of bounds for 5-element array)

   //demo_5.go    
    package main    
    import (    
        "fmt"    
    )    
    func main() {    
        var arr =  [5] int {1, 2, 3, 4, 5}    
        modifyArr(arr)    
        fmt.Println(arr)    
    }    
    func modifyArr(a [5] int) {    
        a[1] = 20    
    }

   //demo_6.go    
    package main    
    import (    
        "fmt"    
    )    
    func main() {    
        var arr =  [5] int {1, 2, 3, 4, 5}    
        modifyArr(&arr)    
        fmt.Println(arr)    
    }    
    func modifyArr(a *[5] int) {    
        a[1] = 20    
    }

    var arr =  [5] int {1, 2, 3, 4, 5}    
    var arr_1 [5] int = arr    
    var arr_2 [6] int = arr

cannot use arr (type [5]int) as type [6]int in assignment