1. package main
    3. import "fmt"
    5. //指针传递，改变变量本身地址对应的值
    6. func swap(a,b *int)  {
    7.     var temp int
    8.     temp = *a
    9.     *a = *b
    10.     *b = temp
    11. }
    12. func main()  {
    13.     var a int = 10
    14.     var b int = 20
    15.     swap(&a, &b)
    16.     fmt.Println("a=",a,"b=", b)
    17. }
    18. //输出结果：
    19. //a=20,b=10
    1. package main
    3. import "fmt"
    5. //值传递，不改变变量本身的值
    6. func swap1(pa int ,pb int)  {
    7.     var temp1 int
    8.     temp1 = pa
    9.     pa = pb
    10.     pb = temp1
    11. }
    14. func main()  {
    15.     var pa int = 4
    16.     var pb int =6
    17.     swap1(pa, pb)
    18.     fmt.Println("pa的值",pa,"pb的值",pb)
    19. }
    21. //输出：
    22. //pa的值 4 pb的值 6