JuniorTheoryCommon

What does the program print?

package main

import "fmt"

func main() {
    defer fmt.Print(1)
    defer fmt.Print(2)
    defer fmt.Print(3)
    fmt.Print("go")
}

go321

Expecting go123: deferred calls run in reverse order, the last deferred first, so 3 prints before 2 and 1.
Expecting the digits before go: defer only schedules the call; it runs when main returns, after fmt.Print("go").