Go语言之指针(二十二)

    package point_demo
    
    import "fmt"
    
    func TestPoint()  {
        var count int = 20
        var countPoint *int
        var countPoint1 *int
        countPoint = &count
        fmt.Printf("count 变量的地址:%x \n", &count)     //count 变量的地址:c00000a0a0
        fmt.Printf("countPoint 变量存储的地址:%x \n", countPoint) //countPoint 变量存储的地址:c00000a0a0
        fmt.Printf("countPoint 指针指向地址的值:%d \n", *countPoint) //countPoint 指针指向地址的值:20
    
        if countPoint1 == nil {
            fmt.Printf("countPoint1 变量存储的地址:%x \n", countPoint1) //countPoint1 变量存储的地址:0
        }
    }

    package main
    
    import "./point_demo"
    
    func main() {
        point_demo.TestPoint()
    }

    package point_demo
    
    import "fmt"
    
    func TestPointArr()  {
        //指针数组
        a,b := 1,2
        pointArr :=[...]*int{&a, &b}
    
        fmt.Println("指针数组pointArr:", pointArr)//指针数组pointArr: [0xc0000a2058 0xc0000a2070]
        //数组指针
        arr := [...]int{3,4,5}
        arrPoint := &arr
        fmt.Println("数组指针arrPoint:", arrPoint)//数组指针arrPoint: &[3 4 5]
    }

    package main
    
    import "./point_demo"
    
    func main() {
        point_demo.TestPointArr()
    }