go stacking defer

package main

import (
    "fmt"
)

func main() {
    fmt.Println("Start")
    defer fmt.Println("Middle")
    fmt.Println("End")
}

1. package main: Defines that the current file belongs to the main package.
2. import ("fmt"): Imports the fmt package, which provides functions for formatted I/O.
3. func main() { ... }: Defines the main function, which serves as the entry point of the program.
4. fmt.Println("Start"): Prints "Start" to the standard output.
5. defer fmt.Println("Middle"): Defers the execution of fmt.Println("Middle") until the surrounding function (main in this case) finishes its execution.
6. fmt.Println("End"): Prints "End" to the standard output.
7. When main finishes execution, the deferred function fmt.Println("Middle") executes, printing "Middle" after "End".