[GO]結構體的值傳遞和地址傳遞

package main

import "fmt"

type student struct {
    id   int
    name string
    sex  byte
    age  int
    addr string
}

func test01(s student)  {
    s.id = 2
    fmt.Println("test s = ", s)
}

func test02(p *student )  {
    p.id = 3
    fmt.Println("p = ", *p)
}

func main() {
    s1 := student{id: 1, name: "baylorqu", age: 18}
    fmt.Println("s1 = ", s1)
    test01(s1) //這里進行的是值傳遞，形參無法變更實參
    fmt.Println("s1 = ", s1)
    test02(&s1) //這里傳遞的是結構體的地址，函數里的操作會直接操作地址指向的結構體
}

執行結果為

s1 =  {1 baylorqu 0 18 }
test s =  {2 baylorqu 0 18 }
s1 =  {1 baylorqu 0 18 }
p =  {3 baylorqu 0 18 }