8.defer调用顺序

package main
import "fmt"
func func1(){
    fmt.Println("A")
}
func func2(){
    fmt.Println("B")
}
func func3(){
    fmt.Println("C")
}
func main() {
    //先进后出
    defer func1()
    defer func2()
    defer func3()
}
/*
C
B
A
*/

package main
import "fmt"
func deferFunc() int {
    fmt.Println("defer...")
    return 0
}
func returnFunc() int {
    fmt.Println("return")
    return 0
}
func returnAndDefer() int  {
    defer deferFunc()
    return returnFunc()
}
func main() {
    //return之后的语句先执行
    //defer后的语句后执行
    returnAndDefer()
}